Film Capacitors for New Energy, Industrial Control

Applications in the new energy and industrial control fields are driving demand for film capacitors with high voltage and capacitance. Such advanced passive components are currently produced by major industry players based in Japan, Europe and the US.

China, the largest market for this category, hopes to catch up, with more suppliers boosting R&D efforts to diversify their predominantly entry-level and midrange selections. Only Xiamen Faratronic is currently producing high-voltage film capacitors, which include metallized polypropylene types in rated voltages of 160, 250, 400, 630, 1,000, 1,600 and 2,000V, capacitance range of 0.00056 to 15µF and tolerance of ±2 to ±20 percent.

Polypropylene, polycarbonate, Mylar and polystyrene film capacitors widely used in household appliances, consumer electronics, communications and power equipment, and electronic products are all available in mainstream supply in China. These capacitors have 63 to 500V rated voltage, 3pF to 10µF capacitance range with tolerance of ±5, ±10 or ±20 percent, and are made based on CE, KC, RoHS, UL and VDE standards.

To widen their product catalogs and broaden their customization range, many companies will turn out variants that use metallized dielectric film.

Chinese manufacturers source metal foil, plastic film, epoxy resin and other materials from domestic and foreign providers as required by customers. The cost of these inputs is expected to remain relatively stable for the rest of 2023 and keep product prices at current levels.

Metallized polypropylene capacitor, 250V

Company: Dongguan Aillen Electronic Technology Co. Ltd

A metallized polypropylene film capacitor, Dongguan Aillen’s MPX CMF-2.75uf has a rated voltage of 250V and is widely used in high-frequency AC, DC and pulse circuits. It has a plastic case with epoxy resin sealing. This component is designed to withstand overvoltage stress and is flame-retardant.

MOQ: 5,000 units

Lead time: 10 days

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Metallized polyester capacitor, 400V

Company: Dongguan Aillen Electronic Technology Co. Ltd

Dongguan Aillen’s model MTE-400V is a metallized polyester film capacitor with 400V rated voltage, suitable for DC, blocking and bypass circuits. It is RoHS-compliant.

MOQ: 5,000 units

Lead time: 10 days

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Metallized polyester capacitor, 0.01 to 10µF

Company: Elecsound Technology Co. Ltd

This metallized polyester film capacitor, Elecsound’s CL21, is available in variants with 100, 250, 400 or 630V rated voltage. It has 0.01 to 10µF capacitance, ±5 or ±10 percent capacitance tolerance and ≤0.01 dissipation factor. Applications include filter, noise suppression and low pulse circuits.

MOQ: Negotiable

Lead time: 7 days

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Metallized polypropylene, 0.01 to 4.7µF

Company: Elecsound Technology Co. Ltd

Elecsound offers the CBB20, a metallized polypropylene film capacitor, which based on rated voltage is available in 250, 400 and 630V variants with a capacitance range of 0.01 to 4.7µF, capacitance tolerance of ±5 or ±10 percent and dissipation factor of ≤0.001.

MOQ: Negotiable

Lead time: 7 days

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10 to 4700pF film capacitor, -40 to 125 C

Company: Shenzhen Weidy Industrial Development Co. Ltd

The Y5V-WYD from Shenzhen Weidy is a film capacitor with capacitance range and tolerance of 10 to 4700pF and ±10 or ±20 percent, dielectric strength of 4,000VAC, insulation resistance of ≥10,000Mohms and operating temperature of -40 to 125 C. By rated voltage, the X1 variant has 500V and the Y1 type 250, 300, 400 or 500V. Standards met are CQC, ENEC, KC, UL and VDE.

MOQ: 10,000 units

Lead time: 20 days

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Metallized polypropylene film capacitor, 0.001 to 0.47µF

Company: Shenzhen Weidy Industrial Development Co. Ltd

Shenzhen Weidy’s metallized polypropylene film capacitor, the W42, has a rated voltage of 310VAC, capacitance range of 0.001 to 0.47µF, capacitance tolerance of ±10 or ±20 percent and operating temperature of -40 to 110 C. It meets CQC, KC, UL and VDE standards.

MOQ: 10,000 units

Lead time: 20 days

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