We are WEE, We Enhance Efficiency   

Year Established: 2000

Headquarter: Hongkong

Employees: 500

Products: General Purpose Rectifier, Fast Recovery Rectifier, Transient Voltage Suppressor, Schottky Rectifier, Switching Diode, Zener Diode...

Application: Automotive, Consumer, Computer, Lighting, Communication, Energy Harvesting, and Smart Grid...

Market: America, Europe, Asia, South Africa and Mid. East...

Advantages: Considerate Service, Competitive Offer, Credible Quality & Lead Time...

Catalogue: https://www.weediode.com/WEE-Technology-Company-Limited-Catalogue-Diode-Rectifier-Transistor.pdf

Presentation: https://www.weediode.com/WEE-Technology-Company-Limited-Presentation.pdf

REACH: https://www.weetcl.com/pdf/WEE-Technology-Diodes-Rectifiers-RoHS-II-2023.pdf

ROHS: https://weetcl.com/pdf/WEE-Technology-Diodes-Rectifiers-REACH-2023.pdf

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Written by WEE Technology Company Limited

Unlock Unbeatable Savings with WEET: Promotion Price on Diode Rectifiers

WEET Technology, a leader in diode and rectifier manufacturing, is now offering an exclusive promotional pricing on some of its most popular diode rectifiers. This limited-time offer is a fantastic opportunity for electronics designers, engineers, and hobbyists to upgrade their projects with high-performance components—all at unbeatable prices.

Why Choose WEET Diode Rectifiers?

WEET’s diode rectifiers are renowned for the reliability, performance, and competitive pricing. With over 20 years of experience in the semiconductor industry, WEET consistently delivers products that meet the highest standards. The commitment to quality is evident in every component, ensuring your circuits function optimally in both consumer and industrial applications.

Featured Products in the Promotion

Key Benefits of This Promotion

Competitive Pricing: Take advantage of WEET’s promotional pricing to reduce your overall project costs.

Short Lead Times: With a focus on rapid delivery, you can expect a quick turnaround on your orders, ensuring minimal downtime for your projects.

High Quality & Reliability: WEET’s components are manufactured with cutting-edge technology and strict quality control, providing you with reliable performance every time.

Free Samples: Explore the quality firsthand with available free samples—allowing you to test the components before committing to larger orders.

Applications & Industries

These diode rectifiers are used in a wide range of applications including:

Power supply units

Consumer electronics (TVs, radios, adapters)

Industrial equipment

Automotive electronics

Renewable energy systems

Whether you’re designing a new circuit or upgrading an existing system, WEET’s diode rectifiers are engineered to meet the demanding requirements of modern electronic designs.

Don’t Miss Out!

This promotional offer is available for a limited time only. Take advantage of these special prices and ensure that your next project is powered by some of the most reliable diode rectifiers on the market.

Upgrade your designs with WEET and experience the perfect balance of quality, efficiency, and affordability today!

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Bridge rectifiers are essential components in power electronics, responsible for converting alternating current (AC) into direct current (DC). Among the widely used bridge rectifiers, the KBPC and KBPC-W series stand out due to their reliability and high-current handling capabilities.

What is a Bridge Rectifier? A bridge rectifier is an electrical circuit that uses four diodes in a bridge configuration to efficiently convert AC to DC. These rectifiers are commonly used in power supplies, motor drives, and other applications requiring DC voltage.

The KBPC and KBPC-W bridge rectifiers are designed for high-power applications, offering high current ratings and voltage handling capabilities. Their metal casing provides durability and enhances heat dissipation, ensuring optimal performance under demanding conditions.

The main difference between KBPC and KBPC-W rectifiers lies in their terminal configuration. The KBPC series typically features quick-connect or lug terminals, while the KBPC-W series comes with wire leads, offering greater flexibility for certain installations.

These bridge rectifiers are widely used in various applications, including:

Power Supply Units (PSUs): Converts AC input to DC for electronic circuits.

Battery Chargers: Ensures efficient rectification for battery charging.

Motor Control Systems: Used in industrial automation and motor drives.

UPS Systems: Provides stable DC voltage for uninterrupted power supplies.

Renewable Energy Systems: Essential in solar inverters and wind turbines.

Since these rectifiers handle high current, they can generate significant heat. It is highly recommended to mount them on a heat sink to improve thermal management. Ensuring adequate ventilation will further enhance their efficiency and lifespan.

The KBPC and KBPC-W bridge rectifiers are excellent choices for high-power rectification. Your choice between the two depends on your installation needs—whether you prefer quick-connect terminals (KBPC) or wire leads (KBPC-W). Proper thermal management is key to ensuring long-term reliability and performance.

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Introduction to Zener Diodes

Zener diodes are a unique type of diode designed to operate in the reverse breakdown region. Unlike regular diodes, which allow current to flow only in one direction and block reverse current, Zener diodes are engineered to allow reverse current when a specific voltage, known as the Zener voltage, is reached. This characteristic makes Zener diodes essential for voltage regulation, protection, and stabilization in various electronic circuits.

Zener Diode Functionality

A Zener diode operates by using the reverse breakdown property. When the reverse bias voltage exceeds the Zener breakdown voltage (V_Z), the diode begins to conduct in the reverse direction while maintaining a constant voltage. This ability makes Zener diodes ideal for use in voltage clamping, voltage regulation, and over-voltage protection.

Zener diodes are used in a variety of applications, including:

Voltage regulation: Stabilizing voltage levels in circuits.
Over-voltage protection: Safeguarding sensitive components from excess voltage.
Waveform clipping: In signal processing and audio circuits.

What Makes BZX84C Series Special?

The BZX84C series is a family of Zener diodes that offer a wide range of Zener voltage values, allowing for versatility in voltage regulation applications. These diodes are designed for low-power, general-purpose use, and they are available in both small surface-mount and through-hole packages. The BZX84C2V0 to BZX84C75 models offer specific Zener voltages suitable for various applications, from low-voltage regulation to higher voltage protection.

BZX84C2V0: Low-Voltage Zener Regulation

The BZX84C2V0 is a Zener diode with a Zener voltage of 2.0V. This low Zener voltage makes it ideal for low-voltage applications, such as:

Voltage regulation for small devices: Powering low-voltage components like sensors or microcontrollers.
Over-voltage protection: Ensuring that circuits with low-voltage components do not get damaged by excessive voltage.
Signal clamping: Protecting sensitive signal circuits from voltage spikes.

Key Specifications of BZX84C2V0:

Zener Voltage (V_Z): 2.0V
Maximum Zener Current (I_Z): 5mA 
Power Dissipation: 350mW
Package Type: SOT-23

The low Zener voltage makes the BZX84C2V0 a popular choice for low-voltage systems, where precision voltage regulation is essential. Its small form factor allows it to be easily integrated into compact designs, like portable electronics or low-power battery-operated devices.

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When it comes to converting AC (alternating current) to DC (direct current), diode rectifiers play a crucial role in many power electronics systems. Among the variety of diodes available, the S1M diode rectifier is a popular choice for numerous applications due to its efficiency, reliability, and compact design.

What is the S1M Diode Rectifier?

The S1M diode is a single-phase, general-purpose, silicon rectifier diode. It is primarily used for converting AC signals to DC power, making it essential in devices like power supplies, charging circuits, and in various power conversion applications.

The S1M is a part of the S-series of rectifier diodes, offering a compact and reliable solution for medium to high-frequency applications, it's a solid choice for low- to mid-power applications.

Key Specifications of the S1M Diode

Forward Current (I_F): 1A

Peak Forward Voltage (V_F): 1.1V at 1A

Average Rectified Current (I_O): 1A

Junction Temperature (Tj): 150°C

Package Type: DO-214AC, SMA

Key Features

Compact Size: The S1M diode comes in a small, lightweight package, which saves space on printed circuit boards (PCBs) without compromising performance.

Fast Recovery Time: The diode offers a relatively fast recovery time, making it suitable for applications where switching frequency is important.

Reliable Performance: With a high max junction temperature of 150°C, the S1M is designed to operate in demanding environments without overheating or failure.

Cost-Effective: The S1M diode is affordable, making it an excellent choice for designers looking for an efficient yet low-cost solution.

Applications of the S1M Diode Rectifier

The S1M diode’s versatility makes it ideal for a wide range of applications:

Power Supply Circuits: Used to convert AC voltage from the mains to the required DC voltage in devices like consumer electronics, power supplies, and industrial equipment.

Signal Rectification: In audio and signal processing applications, the S1M can rectify alternating signals into a usable DC form.

Motor Control: The S1M diode is useful in DC motor drives, where it ensures a smooth current flow.

LED Lighting Circuits: Often used in low-power LED applications, where it helps in the rectification process to maintain a steady current for the LEDs.

Battery Chargers: With its compact size and reliable performance, it is an essential component in many battery charger designs, including those used for mobile devices, electric vehicles, and more.

Advantages of the S1M Diode Rectifier

High Efficiency: The S1M diode offers excellent efficiency in power conversion, reducing energy loss and heat generation during rectification.

Wide Operating Temperature Range: It can handle a broad temperature range, making it suitable for use in both indoor and outdoor environments.

Minimal Reverse Leakage Current: The S1M has low reverse leakage current, which ensures better performance in power-sensitive applications and increases the lifespan of the diode.

Durability: With a robust construction and high-quality materials, it’s built to withstand demanding operating conditions, offering long-term reliability.

Conclusion

The S1M diode rectifier is a reliable and versatile component that plays a vital role in converting AC to DC in various power electronics applications. Whether you’re working on a power supply, motor control, or battery charger, the S1M diode offers the right balance of efficiency, durability, and affordability. Its small size and high-performance capabilities make it an excellent choice for engineers and hobbyists alike.

If you're designing or modifying electronic circuits, consider incorporating the S1M diode for your rectification needs — you’ll be getting a solid, cost-effective component that can stand up to the test.

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Safety capacitors are mainly capacitors that require safety certification before they can be used. Currently, the main safety capacitors are: X1 safety capacitor, X2 safety capacitor, and Y1 and Y2 safety capacitors. Some people want to know if x2 is a safety capacitor?

https://www.weetcap.com/pdf/WEET-WFCA-THB-X2-85C-Metallized-Polypropylene-Film-Capacitor-275V-305V-310VAC.pdf

The answer is affirmative: X2 is one of the safety capacitors, and its usage is particularly large. Although X1 is also a safety capacitor, its usage is relatively small. There are actually many types of X2 safety capacitors, and different types of X2 capacitors have very different functions. Below we will introduce them one by one:

1. X2 safety capacitor for suppressing power electromagnetic interference

This is the most typical use of X2 capacitor, which is commonly used to suppress power electromagnetic interference. It mainly uses polymer polypropylene film dielectric, thickened metalized electrode, fully automatic spray welding process, 94V0 flame retardant PBT plastic shell, epoxy resin sealing, high voltage resistance, and strong transient pulse voltage withstand ability. Widely used in power supply parallel cross line circuits to suppress electromagnetic interference.

2. X2 safety standard capacitor for capacitive divider power supply

Another common function of X2 capacitors is to reduce voltage through resistance and capacitance. In some small home appliance controls and smart meters, using capacitors for voltage reduction is simpler and more cost-effective than using transformers. X2 capacitors are specifically designed for resistance and capacitance voltage reduction circuits, using polymer polypropylene film dielectric, thickened metalized electrodes, fully automatic spray welding technology, 94V0 flame-retardant PBT plastic shell, moisture resistant epoxy resin sealing, and CP wire lead out. High voltage resistance, moisture and heat resistance, low capacitance drop, specifically designed for capacitive divider power supply circuits, such as LED driver modules, electric meters, small household appliances and other low-power electronic consumer products.

3. Double 85 type X2 safety capacitor, X2 Heavy Duty Series Safety Capacitors

The double 85 X2 capacitor is also used for resistance capacitance voltage reduction, but its performance is better and can pass the THB1000h double 85 test. It is used in some circuits with harsh operating environments, such as smart meters, which are mainly used outdoors to withstand high temperature and high humidity environments. Therefore, the double 85 X2 capacitor must be used. It has high voltage resistance, moisture resistance, and low capacitance drop, and is specifically designed for resistive capacitive voltage reduction circuits, such as LED driver modules, electric meters, small household appliances, and other low-power electronic consumer products. The product can pass the THB1000h dual 85 test.

4. RC parallel and series X2 capacitors

This type of X2 capacitor has a unique internal structure, with a resistor connected in parallel or series. The RC parallel type X2 capacitor is composed of an internal parallel connection between the X2 capacitor and the discharge resistor, and has excellent flame retardant performance. Widely used in anti-interference applications such as power lines. The RC series X2 capacitor has good noise suppression, energy peak absorption, and damping effects.

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What are the differences between THB type X2 safety capacitors and regular X2 capacitors?

For X2 safety capacitors, those who are not familiar with them believe that their function is to suppress power electromagnetic interference. In fact, X2 capacitors have many usage scenarios, some of which do not require high performance, but some require strict performance from X2 capacitors. Strong capacitor manufacturers, such as WEE Technology, will classify WFC-A X2 capacitors into anti-interference type, resistance capacitance voltage reduction type, THB high temperature resistance, high humidity type. What are the differences between THB X2 safety capacitors and ordinary X2 capacitors? What is THB type X2 safety capacitor?

Simply put, it means that WFC-A can pass the THB 1000h dual 85 test, also known as the dual 85 capacitor.

https://www.weetcap.com/Plastic-Film-Capacitors/WEET-WFCA-THB-X2-85C-Metallized-Polypropylene-Film-Capacitor-275V-305V-310VAC.html

This test may seem simple, but for X2 safety capacitors, it is still difficult to pass because the two biggest factors affecting the lifespan of X2 capacitors are high temperature and humidity. Working in such an environment, ordinary X2 safety capacitors will quickly break down and have a short lifespan.

 Some electrical appliances are used in harsh environments, such as smart meters used outdoors, which may face high temperatures and humidity. In this case, THB type X2 safety capacitors must be used.

Characteristics and functions of THB type X2 safety capacitor:

Optimized series X2 certified type, using polymer polypropylene film medium, thickened metalized electrode, fully automatic spray welding process, 94V0 flame retardant PBT plastic shell, moisture resistant epoxy resin sealing, CP wire lead out. High voltage resistance, moisture and heat resistance, low capacitance drop, specifically designed for resistive capacitive voltage reduction circuits, such as LED driver modules, electric meters, small household appliances and other low-power electronic consumer products. The product can pass the THB1000h dual 85 test.

Compared to ordinary X2 capacitors, it has better high temperature resistance and high humidity performance, but the disadvantage is that the price will be slightly higher.

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For capacitive divider power supply circuit only contains a few simple components, so its structure is simple and reliable. In this circuit, the most important electronic component is the resistive capacitive buck capacitor. Should the capacitive divider power supply capacitor be an X2 capacitor or a CBB capacitor?

The answer is: X2 capacitors and many CBB capacitors can be used as resistance capacitance step-down capacitors.

X2 safety capacitor specifically designed for capacitive divider power supply

X2 capacitors are mainly used to suppress electromagnetic interference from power sources. Ordinary X2 capacitors cannot be used as resistance capacitance step-down capacitors, otherwise there will be problems such as rapid capacity decay and extremely short service life.

1, If you want to use it in capacitive divider power supply circuits, you must use WFC-A series capacitors specifically designed for resistive capacitive divider.

The X2 safety standard capacitor for resistive capacitive voltage reduction is a type of capacitor used in resistive capacitive voltage reduction circuits, which has excellent electrical and stability performance. This type of capacitor usually uses high-quality dielectric materials and electrode materials, which have the characteristics of high withstand voltage, low loss, good stability, long service life, and comply with safety standards, with safety and reliability.

2. CBB22 capacitor specifically designed for resistive capacitive voltage reduction.

In order to avoid oxidation of the metal coating caused by high voltage communication, the CBB22 capacitor specifically designed for resistive capacitive voltage reduction uses different metal thin films, which can significantly slow down the decay rate of the capacitance value. At the same time, the production process is more complex and must be carried out in a constant temperature and humidity workshop to reduce the water content of the production environment and minimize the adsorption of moisture by the product. The zinc aluminum film capacitor core is immediately sealed after heating up, and the product temperature is increased while being evacuated and cured.

3. MPB box capacitors specifically designed for capacitive divider power supply

This type of capacitor is similar to the CBB22 capacitor, with the same internal capacitor core, except that the MPB capacitor has better performance and longer lifespan.

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X2 safety capacitors are mainly divided into two types: one is anti power electromagnetic interference, and the other is resistance capacitance voltage reduction. Today, we will focus on introducing the X2 safety capacitors specifically designed for resistance capacitance voltage reduction.

The X2 safety capacitors used for voltage reduction and the capacitors used for anti-interference, although both are made by winding metalized polypropylene film, still have certain differences in their internal composition.

The main adjustment is to adjust the zinc aluminum ratio of the metal film, and at the same time, the resistance capacitance voltage reduction X2 safety capacitor adopts a double 85 characteristic metalized polypropylene film and epoxy resin cured sealing adhesive.

https://www.weetcap.com/Plastic-Film-Capacitors/WEET-WFC-X2-Metallized-Polypropylene-Film-Capacitor-310VAC.html

This is used in resistive capacitive buck circuits, which means that the capacity decay is smaller and the lifespan of the capacitor is longer.

Can ordinary anti-interference X2 capacitors be used in resistive capacitive buck circuits? Indeed, there have been some customers who are not familiar with X2 capacitors and directly use ordinary X2 capacitors for anti-interference in resistive capacitive voltage reduction circuits. The result is that their capacity decays quickly. After a few months of use, due to the severe capacity decay of X2 capacitors, the power supply to the resistive capacitive voltage reduction circuit is insufficient, and the electrical appliances cannot be used normally.

What are the characteristics and functions of the X2 capacitor for resistive capacitive voltage reduction? 

We call the optimized series X2 certified AC safety capacitors for resistance capacitance voltage reduction. They use polymer polypropylene film dielectric, thickened metalized electrodes, fully automatic spray welding process, 94V0 flame-retardant PBT plastic shell, moisture resistant epoxy resin sealing, and CP wire lead out. High voltage resistance, moisture and heat resistance, low capacitance drop, specifically designed for resistive capacitive voltage reduction circuits, such as LED driver modules, electric meters, small household appliances and other low-power electronic consumer products.

Reminder: When choosing X2 capacitors in the future, it is important to clarify whether they are used for anti-interference or resistive capacitive voltage reduction applications. If using resistive capacitive voltage reduction circuits, X2 safety capacitors specifically designed for resistive capacitive voltage reduction must be used, otherwise the circuit is prone to problems.

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X2 safety capacitors are commonly used in power circuits to suppress electromagnetic interference. They are installed between the live and neutral wires of the power supply to filter out high-frequency noise, ensure the stability of the power supply, and reduce the potential impact of electromagnetic interference on other electronic devices.

In fact, X2 safety capacitors can be further divided into many types. Taking the WFC-A series X2 safety capacitors from WEET as an example, they can be divided into suppression of power electromagnetic interference type, PD fast charging dedicated type, resistance capacitance voltage reduction dedicated type, double 85 type, moisture-proof type, etc.

In what occasions are moisture-proof X2 safety capacitors used?

This X2 capacitor is suitable for capacitor voltage reduction circuits connected in series with power sources, such as smart meters, LED power supply modules, and other harsh application environments.

What are the characteristics of moisture-proof X2 safety capacitors?

1. The capacity attenuation is extremely small.

Compared with the anti-interference X2 capacitor, our moisture-proof X2 capacitor has less capacity attenuation and can be used in harsh environments such as high temperature and high humidity for a long time with excellent capacity stability.

The moisture-proof X2 capacitor was designed with long-term stability in mind, with minimal capacity decay and the ability to provide stable performance throughout the entire lifespan of the device.

2. Capacitors have self-healing properties and can withstand surge voltage impacts.

3. Excellent flame retardancy and better high-temperature resistance.

4. Better high temperature resistance. The moisture-proof X2 safety capacitor can operate stably in high temperature environments, and its design considers performance maintenance at high temperatures to ensure that there will be no performance degradation or capacity degradation under long-term high temperature loads.

5. Better moisture resistance.

Due to the fact that some electronic devices may be used in humid environments, these capacitors typically have good moisture resistance and can maintain stable electrical characteristics in high humidity environments.

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The X2 capacitor of the THB series is specifically designed for capacitive divider circuits connected in series with 100-240VAC power supplies, such as electric meters, LED driver modules, etc. Its biggest advantage is smaller capacity attenuation, better resistance to high temperatures and humidity, and significantly better performance than ordinary anti-interference X2 safety capacitors.

THB MKP-X2 Polypropylene Film Capacitors for EMI Suppression (THB Grade IIIB: 85C, 85% R.H., 1,000h)

High stability of capacitance under sever ambient condition, such as high temperature and high humidity

1. Internally wrapped with metalized polypropylene film.

2. Excellent self-healing performance, able to withstand surge voltage impact.

3. Excellent capacitance stability under long-term load, with significantly less capacity decay, and longer lifespan when used in capacitive divider power supply circuits.

4. Excellent moisture resistance, high humidity resistance, and can also be used in some harsh environments.

5. Excellent flame retardant performance.

6. Excellent capacity stability for long-term application in harsh environments such as high temperature and humidity.

In summary: THB series X2 safety capacitors belong to the optimized series X2 certification type, using polymer polypropylene film dielectric, thickened metalized electrodes, fully automatic spray welding process, 94V0 flame retardant PBT plastic shell, moisture resistant epoxy resin sealing, and CP wire lead out. High voltage resistance, moisture and heat resistance, low capacitance drop, specifically designed for capacitive divider power supply circuits, such as LED driver modules, electric meters, small appliances and other low-power electronic consumer products. The product can pass the THB 1000h 85C test.

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Dear Customer,

Thanks to all of our valuable customers support, WEET have spent a peaceful and prosperous 2024.

Now we are welcoming the Year of the Snake in 2025. Please find our Chinese Holiday Notice as following.

Thank you. We are looking forward to serving you in the new year.

Shut Down (during CNY): 20th Jan to 7th Feb, 2025

Resume Work on :10th Feb, 2025

Last Shipment (before CNY): 10th Jan, 2025

First Shipment (after CNY): 17th Feb, 2025

Yours Sincerely,

WEE Technology Company Limited

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In the rapid development of modern electronic technology, crystal resonators, as key components for providing stable frequencies, play a vital role. Among them, surface mount crystal resonators have been widely used in many fields with their unique advantages.

WQC-TF1610 is a high-performance surface mount crystal resonator that operates in the 32.768KHz frequency band. It adopts advanced manufacturing technology and design concepts, with a small package size (1.6×1.0×0.5mm), excellent frequency stability (±10ppm / ±20ppm) and good electrical performance. The design fully considers the needs of modern electronic equipment for miniaturization, high precision and high reliability, and can provide a stable and accurate frequency source for various applications.

Technical features and advantages

 1. High-precision frequency control

 The crystal resonator of WQC-TF1610 can provide extremely high-precision frequency output with extremely small errors. Its frequency accuracy can reach one millionth of a level, ensuring the accuracy and stability of electronic equipment during operation. For example, in smart metering equipment, precise frequency control is essential for accurate measurement and data transmission.

 2. Excellent temperature stability

 The WQC-TF1610 performs well in a mixed and changing environment, and can automatically compensate for the effect of temperature on frequency and maintain a stable output. It can work stably whether in the extremely cold northern winter or the hot southern summer. This feature is particularly important in electronic equipment for outdoor applications, such as remote monitoring systems and meteorological monitoring equipment.

 3. Low power design

 The WQC-TF1610 adopts a low-power design concept, which greatly reduces the energy consumption of the equipment. For devices that rely on batteries and need to run for a long time, such as wireless sensor nodes and portable medical devices, it can significantly extend the battery life and reduce the trouble and cost of frequent battery replacement.

 4. Compact package size

 The small size design of the WQC-TF1610 enables it to be easily integrated into space-constrained circuit boards. This provides strong support for the thinness and miniaturization of electronic products, making the design of equipment more flexible and diverse.

 5. Good anti-interference ability

 It has excellent anti-electromagnetic interference and mechanical vibration interference capabilities. In complex electromagnetic environments, such as industrial automation production lines and communication base stations, it can ensure that the frequency output is not interfered by the outside world and ensure the normal operation of the equipment.

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The tuning fork quartz crystal or clock crystal is one of the oldest quartz crystal designs. Originally used for timekeeping in watches and clocks, tuning forks are now also used in modern electronic products such as computers as real-time clocks (RTCs). Hundreds of millions of these uniquely shaped quartz crystals are produced by global suppliers every year. Tuning fork crystals are available in a variety of sizes to meet design needs, and there is a trend towards smaller surface mount crystal packages every year.

Tuning Fork Quartz Crystal (also known as cylindrical crystal oscillator) refers to a crystal oscillator with a quartz crystal wafer that looks like a tuning fork. It is a quartz crystal resonator that is often used to provide clock frequencies to ensure that electronic devices can work properly. The common frequency of tuning fork crystal oscillators is 32.768KHZ, and the main sizes are ‌DIP:3.0x8.0mm(WQC-TF308), 2.0x6.0mm(WQC-TF206), and are commonly used in remote controls, quartz watches, clocks, computers, home appliance automatic control and industrial automatic control, etc.

As the name suggests, quartz crystals are made of quartz. Traditionally, quartz is a naturally occurring hard mineral, but most quartz today is grown synthetically in autoclaves, which provides a higher standard purity than natural quartz. Quartz is used because it becomes piezoelectric and generates an electrical charge when mechanical pressure and tension are applied. This pressure causes mechanical vibrations that we call frequency.

Quartz needs to be cut at precise angles to initiate specific vibration modes and ensure that the piezoelectric effect works. One of the most common crystal designs is the AT Cut crystal. The frequency of an AT Cut crystal is determined by the thickness of the crystal. For example: the thinner the crystal, the higher the frequency. The vibration quality of the crystal will directly determine whether a parallel or series resonant crystal is required for the crystal oscillator circuit design.

The most common quartz crystal frequency is 32.768kHz. This frequency has become common because when 32.768kHz is divided by 2/15, there is a 1Hz signal. This 1Hz signal will always provide a second. This provides a reliable timekeeping system for the advent of days, dates, and times. The frequency of the classic tuning fork is ultimately a result of simple arithmetic operations and the general conditions of quartz production.

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Diodes and Rectifiers

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1. Communication equipment: In communication equipment, S1M is commonly used to protect signal lines and data lines from damage caused by voltage spikes.

2. Automotive electronics: In key electronic systems such as automotive electronic control units (ECUs) and sensors, US1A can effectively prevent voltage spikes from affecting the system.

3. Power inverter: S1M is commonly used as a rectifier to convert AC power to DC power and provide stable output voltage.

4. LED lighting: In LED driving circuits, S1M can protect LED beads from voltage spikes and surges, extending their service life.

5. Industrial applications: In automated machinery and industrial control systems,  S1M can protect equipment from surges and other power interference.

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SMBJ5.0CA is a transient suppression diode commonly used for circuit protection, such as protecting automotive power lines and RS-485 communication interfaces. Its fast response, high pulse power, and low leakage current characteristics enable it to effectively clamp overvoltage and prevent circuit damage.

https://www.weetcap.com/Diodes-Rectifiers/WEET_SMB_SMBJ_Series.html

TVS transient suppression diodes are widely used in fields such as automobiles, household appliances, communication equipment, AC/DC power supplies, instrumentation, and new energy due to their fast response speed, high transient power, low leakage current, easy control of clamping voltage, small breakdown voltage deviation, high reliability, and small size.

SMBJ5.0CA， One of the members of the SMBJ family, its compatriots include: SMBJ5.0A/CA、SMBJ6.0A/CA、SMBJ6.5A/CA、SMBJ7.0A/CA、SMBJ7.5A/CA、SMBJ8.0A/CA、SMBJ8.5A/CA、SMBJ9.0A/CA、SMBJ10A/CA、SMBJ11A/CA、SMBJ12A/CA、SMBJ13A/CA、SMBJ14A/CA、SMBJ15A/CA、SMBJ16A/CA、SMBJ17A/CA、SMBJ18A/CA、SMBJ19A/CA、SMBJ20A/CA、SMBJ22A/CA、SMBJ24A/CA、SMBJ26A/CA、SMBJ28A/CA、SMBJ30A/CA、SMBJ33A/CA、SMBJ36A/CA、SMBJ40A/CA、SMBJ43A/CA、SMBJ45A/CA、SMBJ48A/CA、SMBJ51A/CA、SMBJ54A/CA、SMBJ58A/CA、SMBJ60A/CA、SMBJ64A/CA、SMBJ70A/CA、SMBJ75A/CA、SMBJ78A/CA、SMBJ80A/CA、SMBJ85A/CA、SMBJ90A/CA、SMBJ100A/CA、SMBJ110A/CA、SMBJ120A/CA、SMBJ130A/CA、SMBJ140A/CA

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Season's Greetings and Best Wishes for the New Year!

Wishing you a joyous holiday season and a prosperous New Year!

Dear Customer,

As we approach the new year, we wish you success in your career, happiness in your family, and bright days filled with sunshine and joy.

May the coming year bring you prosperity and fulfillment in all your endeavors.

At WEET, we are committed to providing you with our strongest support and the best service.

Thank you for your trust and partnership.

Yours Sincerely,

WEE Technology Company Limited

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The tuning fork crystal is named because its quartz oscillator is cut into the shape of a tuning fork. It is not because its appearance resembles a tuning fork as some people say on the Internet. Due to technical and process reasons, early tuning fork crystal oscillators were mostly cylindrical, which gave many people the misunderstanding that tuning fork crystal= cylindrical crystal.

With the continuous miniaturization of electronic products, higher requirements are placed on the external dimensions of tuning fork crystal. Tuning fork crystals using surface mounting have also appeared.

WQC-TF206 32.768KHZ quartz crystal/tuning fork crystal/clock crystal/TV crystal/cylindrical crystal is most suitable for relatively economical electronic products, such as children's toys, ordinary household appliances, and can make the product highly reliable even in the field of automotive electronics. It can also be used for the CPU clock signal source part of the safety control device, just like the quartz crystal on the clock microcontroller. Under extremely harsh environmental conditions, the crystal can also work normally, with stable oscillation characteristics, high heat resistance, heat cycle resistance and vibration resistance and other high reliability performance.

The design of the electrode of the quartz crystal product has the following functions for the quartz crystal components: 1. Change the frequency; 2. Lead the electrode to the outside world; 3. Change the resistance; 4. Suppress the noise. Items 1, 2, and 3 are relatively simple, and the design of item 4 is very critical. The shape, size, thickness, and type of electrode (such as gold, silver, etc.) will lead to changes in item 4. In particular, as the size of the crystal chip decreases, there are higher requirements for the shape, size, and accuracy of the chip electrode design---the consistency of the tolerance size and position has an increasing impact on the crystal product, so more precise requirements are put forward for the design of the electrode, quartz watch crystal for clocks, cylindrical package crystal.

WQC-TF206 and WQC-TF308 are direct-insertion ordinary tuning fork crystal resonators (quartz crystal resonators, passive crystal) launched by WEET, which are packaged in metal shells. Their frequencies are both the commonly used frequency of 32.768KHz, and the inflection point temperature is 25±3℃ (the frequency changes the least with temperature near the inflection point), which is very suitable for personal computers and clocks.

These two direct-insertion crystal resonators have low power consumption, and the typical value of the excitation power is only 1.0μW; the commonly used load capacitance is 6pF, 7pF, 9pF, 12.5pF; the frequency tolerance at 25℃ is ±10ppm, ±20ppm.

Product features of TF-206 and TF-308 direct-insert crystal resonators:

Resistor welding type crystal resonator

Standard frequency of 32.768 KHz

Higher frequency pull (change in crystal frequency caused by changes in load conditions) and lower equivalent series resistance (ESR);

Low cost, which can greatly improve production capacity

Pb-free, RoHS compliant

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Typical Application of WEET SMAJ5.0CA:

 1. Communication equipment protection: SMAJ5.0CA can be used to protect sensitive circuits in communication equipment, such as radio frequency (RF) receivers and transmitters, to prevent damage caused by high voltage.

 2. Computer interface protection: In computer interfaces such as USB, HDMI, and Ethernet ports, SMAJ5.0CA can resist voltage spikes that may be introduced by external power and data lines, protecting the stability of data transmission and device security.

 3. Consumer electronics: In smartphones, tablets, and other portable devices, using SMAJ5.0CA can avoid the impact of voltage anomalies caused by fast charging on internal microcircuits.

 4. Industrial applications: SMAJ5.0CA is widely used in control systems and sensor devices in industrial environments to protect these devices from voltage fluctuations and interference generated during device startup and shutdown.

 5. Automotive Electronics: In automotive electronic systems such as engine control units (ECUs), entertainment systems, etc., SMAJ5.0CA can prevent transient voltages caused by unstable vehicle power systems and improve the overall reliability of electronic systems.

 Main Parameter characteristics of WEET SMAJ5.0CA:

 1. Voltage protection level: SMAJ5.0CA is designed to provide protection at 5V operating voltage and is an ideal choice for low voltage applications.

 2. Fast response time: The TVS diode of this model can respond to voltage spikes in a very short time, quickly limiting the voltage that exceeds the safe threshold below the safe level.

 3. High energy absorption capacity: SMAJ5.0CA can absorb up to 400 watts of peak pulse power, effectively protecting the circuit from transient overvoltage damage.

 4. Low leakage current: Under normal operating voltage, the leakage current of SMAJ5.0CA is very low, ensuring that it will not cause additional power consumption and heat loss to the circuit.

 5. Packaging type: SMA packaging is used, which makes SMAJ5.0CA not only small in size, but also easy to install on the board, suitable for compact circuit design.

https://www.weetcap.com/Diodes-Rectifiers/WEET_SMA_SMAJ_Series.html

Overall, SMAJ5.0CA has a wide range of applications and can be found in multiple fields due to its excellent protection performance and electrical parameter characteristics. SMAJ5.0CA is an indispensable protective component in both consumer electronics and high demand industrial applications.

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