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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BZX55C4V3 is a low-power voltage regulator diode commonly used in various electronic devices.

Its application scenarios are very extensive, and the following will provide a detailed introduction to its parameter characteristics and application scenarios.

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 Parameter characteristics of WEET BZX55C4V3:

 1. High stability: As a voltage regulator diode, BZX55C4V3 has high stability and can provide stable output voltage under different load conditions.

 2. Low power consumption: The low-power characteristics of BZX55C4V3 make it suitable for circuits that require long-term operation, effectively reducing energy consumption.

 3. Accurate output: BZX55C4V3 can provide precise output voltage to ensure the normal operation of other components in the circuit.

 4. Good temperature stability: BZX55C4V3 can maintain stable performance at different temperatures and is suitable for electronic devices under various environmental conditions.

 5. Compact design: The compact design of BZX55C4V3 enables it to be easily integrated into various circuit boards, saving space.

 Typical Application of WEET BZX55C4V3:

 1. Power stabilization: BZX55C4V3 is commonly used as a power regulator in various electronic devices to ensure stable voltage for all components in the circuit.

 2. Signal processing: In signal processing circuits, BZX55C4V3 can be used as a protective component to prevent overvoltage from damaging other sensitive components.

 3. Instrument measurement: In the field of instrument measurement, BZX55C4V3 can be used to ensure the accuracy and stability of the measurement circuit.

 4. Communication equipment: BZX55C4V3 is often used as a voltage stabilizer in communication equipment to ensure the normal operation of the equipment under different power conditions.

 5. Automotive Electronics: In automotive electronic systems, BZX55C4V3 can be used to stabilize the voltage of onboard electronic devices and improve the overall system reliability.

In summary, BZX55C4V3, as a voltage regulator diode, has important application value in various electronic devices. Its high stability and low power consumption make it an ideal choice for many circuit designs.

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Power Dissipation: 500 mW

Forward Voltage: 0.9 V

Low Zener Impedance

High Stability and High Reliability

SOD-123 Small Outline Plastic Package

Polarity: Color band denotes cathode end

Epoxy UL: 94V-0

Mounting Position: Any

datasheet: https://weetcl.com/pdf/WEET_SOD123_BZT52B.pdf

more SOT-123 package diodes: https://weetcl.com/search/?Submit=&keyword=SOD-12

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Power Dissipation: 500 mW

Forward Voltage: 0.9 V

Planar Die Construction

500mW Power Dissipation on Ceramic PCB

General Purpose, Medium Current

Ideally Suited for Automated Assembly Processes

Case: SOD-123, Plastic

Polarity: Cathode Band

datasheet: https://weetcl.com/pdf/WEET_SOD123_BZT52C2V4_THRU_BZT52C43.pdf

details: https://weetcl.com/Silicon_Planar_Zener_Diodes/SOD123_BZT52C2V4_THRU_BZT52C43.html

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LL-41 DL4727 THRU DL4761 are for use in stabilizing and clipping circuits with high power rating. 

Standard Zener voltage tolerance is ±10%.

Add suffix "A" for ±5% tolerance and suffix "B" for ±2% tolerance.

Other tolerance available are upon request.

High Reliability

Very Sharp Reverse Characteristic

Low Reverse Current Level 

1 Watt Zener Diode 3 to 75 Volts

GLASS MELF

DL4727, DL4728, DL4729, DL4730, DL4731, DL4732, DL4733, DL4734, DL4735, DL4736, DL4737, DL4738, DL4739, DL4740, DL4741, DL4742, DL4743, DL4744, DL4745, DL4746, DL4747, DL4748, DL4749, DL4750, DL4751, DL4752, DL4753, DL4754, DL4755, DL4756, DL4757, DL4758, DL4759, DL4760, DL4761

datasheet: https://www.weetcl.com/pdf/WEET_LL41_DL4727_THRU_DL4761.pdf

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LL-41 ZM4727 THRU ZM4761 are for use in stabilizing and clipping circuits with high power rating. 

Standard Zener voltage tolerance is ±10%.

Add suffix "A" for ±5% tolerance and suffix "B" for ±2% tolerance.

Other tolerance available are upon request.

These diodes are also available in DO-41 case with the type designation 1N4727...1N4761

Datasheet: https://weetcl.com/pdf/WEET_LL41_ZM4727_THRU_ZM4761.pdf

ZM4727, ZM4728, ZM4729, ZM4730, ZM4731, ZM4732, ZM4733, ZM4734, ZM4735, ZM4736, ZM4737, ZM4738, ZM4739, ZM4740, ZM4741, ZM4742, ZM4743, ZM4744, ZM4745, ZM4746, ZM4747, ZM4748, ZM4749, ZM4750, ZM4751, ZM4752, ZM4753, ZM4754, ZM4755, ZM4756, ZM4757, ZM4758, ZM4759, ZM4760, ZM4761

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LL-34 ZMM1 THRU ZMM75 are in MiniMELF case especially for automatic insertion.

The Zener voltages are graded according to the international E24 standard. 

Smaller voltage tolerances and higher Zener voltages are upon request.

These diodes are also available in DO-35 case with the type designation BZX55C... 

Datasheet: https://weetcl.com/pdf/WEET_LL34_ZMM1_THRU_ZMM75.pdf

ZMM1

ZMM2V0

ZMM2V2

ZMM2V4

ZMM2V7

ZMM3V0

ZMM3V3

ZMM3V6

ZMM3V9

ZMM4V3

ZMM4V7

ZMM5V1

ZMM5V6

ZMM6V2

ZMM6V8

ZMM7V5

ZMM8V2

ZMM9V1

ZMM10

ZMM11

ZMM12

ZMM13

ZMM15

ZMM16

ZMM18

ZMM20

ZMM22

ZMM24

ZMM27

ZMM30

ZMM33

ZMM36

ZMM39

ZMM43

ZMM47

ZMM51

ZMM56

ZMM62

ZMM68

ZMM75

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ZY1, ZY3.6, ZY3.9, ZY4.3, ZY4.7, ZY5.1, ZY5.6, ZY6.2, ZY6.8, ZY7.5, ZY8.2, ZY9.1, ZY10, ZY11, ZY12, ZY13, ZY15, ZY16, ZY18, ZY20, ZY22, ZY24, ZY27, ZY30, ZY33, ZY36, ZY39, ZY43, ZY47, ZY51, ZY56, ZY62, ZY68, ZY75, ZY82,  ZY91, ZY100, ZY110, ZY120, ZY130, ZY150, ZY160, ZY180, ZY200

Features:

Silicon Power Zener Diodes.

For use in stabilizing and clipping circuits with high power rating.

The Zener voltages are graded according to the international E 24 standard. Smaller voltagetolerances are available upon request.

Mechanical Data:

Case: JEDEC DO-204AM molded plastic body

Weight: approx. 0.34g

Packaging Codes/Options:

E2/4K per Ammo mag. (52mm tape), 20K/box

E3/5K per 13” reel (52mm tape), 10K/box

Datasheet: https://www.weediode.com/zb_users/upload/2024/1/WEET_ZY5.1_ZY200_Zener_Diodes_2W.pdf

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FEATURES

Low profile package

Built-in strain relief

Glass passivated junction

Low inductance

Excellent clamping capability

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1SMA4728A - 3.3V

1SMA4729A - 3.6V

1SMA4730A - 3.9V

1SMA4731A - 4.3V

1SMA4732A - 4.7V

1SMA4733A - 5.1V

1SMA4734A - 5.6V

1SMA4735A - 6.2V

1SMA4736A - 6.8V

1SMA4737A - 7.5V

1SMA4738A - 8.2V

1SMA4739A - 9.1V

1SMA4740A - 10V

1SMA4741A - 11V

1SMA4742A - 12V

1SMA4743A - 13V

1SMA4744A - 15V

1SMA4745A - 16V

1SMA4746A - 18V

1SMA4747A - 20V

1SMA4748A - 22V

1SMA4749A - 24V

1SMA4750A - 27V

1SMA4751A - 30V

1SMA4752A - 33V

1SMA4753A - 36V

1SMA4754A - 39V

1SMA4755A - 43V

1SMA4756A - 47V

1SMA4757A - 51V

1SMA4758A - 56V

1SMA4759A - 62V

1SMA4760A - 68V

1SMA4761A - 75V

1SMA4762A - 82V

1SMA4763A - 91V

1SMA4764A - 100V

• Total power dissipation: Max. 1 W

• Wide zener reverse voltage range 3.3V to 330V

• Low inductance

• For surface mounted applications in order to optimize board space

• Case: DO-214AC / SMA, Molded plastic over passivated junction

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Applications:

General regulation functions in Drone, DVR, Security, Wifi routedr, Navigation, Smart home, Industrical Control, Medical Equipment...

Low-power voltage regulator diodes in small hermetically sealed glass LL-34 Surface-Mounted Device (SMD) packages. 

Available in the normalized ±2 % (BZV55B) and approximately ±5 % (BZV55C) tolerance range. 

The series consists of 37 types with nominal working voltages from 2.4V to 75V.

BZV55B2V4

BZV55B2V7

BZV55B3V0

BZV55B3V3

BZV55B3V6

BZV55B3V9

BZV55B4V3

BZV55B4V7

BZV55B5V1

BZV55B5V6

BZV55B6V2

BZV55B6V8

BZV55B7V5

BZV55B8V2

BZV55B9V1

BZV55B10

BZV55B11

BZV55B12

BZV55B13

BZV55B15

...

BZV55B75

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Marking W1 represents Part no. BZT52C2V7 SOD-123, BZT52C2V7S SOD-323
Marking W2 represents Part no. BZT52C3V0 SOD-123, BZT52C3V0S SOD-323

DIODE, ZENER 0.5W SOD-123 BZT52C serie datasheet: http://www.weediode.com/zb_users/upload/2021/3/WEET_SOD123_BZT52C2V4_THRU_BZT52C43.pdf 

Product Datasheets: http://www.weediode.com/WEET_DATASHEETS_Diode_Bridge.html 
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Spec.: https://weetcl.com/pdf/WEET_LL34_BZV55C2V4_THRU_BZV55C75.pdf  
LL-34 BZV55C2V4 THRU BZV55C75 (BZV55C2V4,BZV55C2V7, BZV55C15,BZV55C27…BZV55C75) Silicon Epitaxial Planar Zener Diodes
LL-34 BZV55B2V4 THRU BZV55B75 (BZV55B2V4,BZV55B2V7, BZV55B15,BZV55B27…BZV55B75) Silicon Epitaxial Planar Zener Diodes

Catalog: Discrete Semiconductor Products Diodes - Zener - Single
Part Status: Active        
Voltage - Zener (Nom) (Vz): 5.1V
Power - Max: 500mW        
Mounting Type: Surface Mount     
Package / Case: LL-34, MINI-MELF, SOD-80, DO-213AC
Applications: Low voltage stabilizers or voltage references
Features: The diodes are available in the normalized E24 +/-2 % (BZV55-B) and approximately +/-5 % (BZV55-C) tolerance range.

Other Zener Diodes: https://weetcl.com/Silicon_Planar_Zener_Diodes   

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Zener Diodes BZV55 serie

BZV55C2V4, BZV55C2V7, BZV55C3V0, BZV55C3V3, BZV55C3V6, BZV55C3V9, BZV55C4V3, BZV55C4V7, BZV55C5V1, BZV55C5V6, BZV55C6V2, BZV55C6V8, BZV55C7V5, BZV55C8V2, BZV55C9V1, BZV55C10V, BZV55C11V, BZV55C12V, BZV55C13V, BZV55C15V, BZV55C16V, BZV55C18V, BZV55C20V, BZV55C22V, BZV55C24V, BZV55C27V, BZV55C30V, BZV55C33V, BZV55C36V, BZV55C39V, BZV55C43V, BZV55C47V,

BZV55B2V4, BZV55B2V7, BZV55B3V0, BZV55B3V3, BZV55B3V6, BZV55B3V9, BZV55B4V3, BZV55B4V7, BZV55B5V1, BZV55B5V6, BZV55B6V2, BZV55B6V8, BZV55B7V5, BZV55B8V2, BZV55B9V1, BZV55B10V, BZV55B11V, BZV55B12V, BZV55B13V, BZV55B15V, BZV55B16V, BZV55B18V, BZV55B20V, BZV55B22V, BZV55B24V, BZV55B27V, BZV55B30V, BZV55B33V, BZV55B36V, BZV55B39V, BZV55B43V, BZV55B47V

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WEET LL-34 BZV55C2V4 THRU BZV55C75 Silicon Epitaxial Planar Zener Diodes

BZV55C2V4,BZV55C2V7,BZV55C3V0,BZV55C3V3,BZV55C3V6,BZV55C3V9,BZV55C4V3,BZV55C4V7,

BZV55C5V1,BZV55C5V6,BZV55C6V2,BZV55C6V8,BZV55C7V5,BZV55C8V2,BZV55C9V1,BZV55C10,

BZV55C11,BZV55C12,BZV55C13,BZV55C15,BZV55C16,BZV55C18,BZV55C20,BZV55C22,BZV55C24,

BZV55C27,BZV55C30,BZV55C33,BZV55C36,BZV55C39,BZV55C43,BZV55C47,BZV55C51,BZV55C56,

BZV55C62,BZV55C68,BZV55C75

Application:

Overvoltage protection circuit in TV:
115V is the main power supply voltage of the TV. When the output voltage of the power supply is too high, D is turned on, and the transistor T is turned on. The collector potential will change from the original high level (5V) to the low level, and the voltage through the standby control line. Put the TV into standby protection.

Arc suppression circuit:
When a suitable Zener diode is connected in parallel on the inductor coil (or the same principle as a normal diode), when the coil is turned off, the high voltage generated by the release of electromagnetic energy is used by the diode. Absorbed, so when the switch is turned off, the arc of the switch is eliminated. This application circuit is used more in the industry, such as some higher power electromagnetic control circuits.

Check more BZV55C2V4,BZV55C2V7, BZV55C15,BZV55C27…BZV55C75 information at http://www.weetcl.com/Silicon_Planar_Zener_Diodes/LL34_BZV55C2V4_THRU_BZV55C75.html 
datasheet: http://www.weetcl.com/pdf/WEET_LL34_BZV55C2V4_THRU_BZV55C75.pdf 

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WEET Zener Diode BZV55C

Power: 0.5W

Package: LL34, MELF

Packing: Tape & Reel

Type: SMD,SMT,Surface Mount

Certificates: ISO 9001, ISO 14001, RoHS, Reach

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WEET zener diodes lead you from present to future.

Zener diodes are widely used as voltage references and as shunt regulators to regulate the voltage across small circuits. When connected in parallel with a variable voltage source so that it is reverse biased, a Zener diode conducts when the voltage reaches the diode's reverse breakdown voltage. From that point on, the relatively low impedance of the diode keeps the voltage across the diode at that value.

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Zener diode, allows current to flow not only from its anode to its cathode, but also in the reverse direction, when the Zener voltage is reached.

Zener diodes have a highly doped p-n junction, can reliably operate in breakdown region.

Zener reverse breakdown is due to electron quantum tunnelling caused by a high-strength electric field.

Zener diodes are widely used in electronic equipment of all kinds and are one of the basic building blocks of electronic circuits. They are used to generate low power stabilized supply rails from a higher voltage and to provide reference voltages for circuits, especially stabilized power supplies. They are also used to protect circuits from overvoltage, especially electrostatic discharge (ESD).

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WEET manufactures zener diodes since 2000, welcome your inquiries and orders.

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WEET manufactures diodes since 2000, welcome your inquiries and orders.

A broad range of SMD and DIP packages enable Zener Diodes with a wide range of capabilities.

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