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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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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