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Voltage Proof MPX MKP Metallised Polypropylene Film Capacitors X2 0.39uf

China Dongguan HOWFINE Electronic Technology Co., Ltd. certification
China Dongguan HOWFINE Electronic Technology Co., Ltd. certification
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Voltage Proof MPX MKP Metallised Polypropylene Film Capacitors X2 0.39uf

Voltage Proof MPX MKP Metallised Polypropylene Film Capacitors X2 0.39uf
Voltage Proof MPX MKP Metallised Polypropylene Film Capacitors X2 0.39uf

Large Image :  Voltage Proof MPX MKP Metallised Polypropylene Film Capacitors X2 0.39uf

Product Details:
Place of Origin: China
Brand Name: HOWFINE
Certification: UL CQC ENEC
Model Number: X2 394K/310VAC P22.5mm
Payment & Shipping Terms:
Minimum Order Quantity: 10000 Pieces
Price: RMB 0.35-0.38/PCS
Packaging Details: 300pcs/ bag,carton size:45cm*31cm*34cm,inner box:29.2cm*21cm*31.3cm,two small boxes in one case and 6000 pcs/box
Delivery Time: 15-21 work days
Payment Terms: T/T
Supply Ability: 300K Pieces per Month

Voltage Proof MPX MKP Metallised Polypropylene Film Capacitors X2 0.39uf

Type: X2 Safety Capacitor Model Number:: MKP X2
Rated Voltage: 275V 310V 330V Lead: Tinned Copper Clad Steel Wire
Performance: Strong Self-healing Supplier Type:: Original Manufacturer
Color: Yellow Size: 26.5mm*10mm*19mm
Application: Motor, Fan, Air Conditioner Etc. Material: Polypropylene Film Capacitor
Capacitance Tolerance: 10%(K) Operating Temperature: 40/110/21B
Current - Leakage:: Very Low Pitch: 22.5mm
Packing: In Bulk Dissipation Factor: Less Than 0.1%
High Light:

MKP High Voltage Polypropylene Film Capacitors


0.39uf Metallised Polypropylene Film Capacitors


Voltage Proof Metallised Polypropylene Film Capacitors


MKP/MPX  Metallized polypropylene film capacitor 394k/310V E4 P22.5mm




 1.  Safety Capacitors : High Stability

2.  Non-inductive.

3.  Self-healing characteristics.

4.  Plastic case, epoxy resin filled, box made of solvent resistant material.

5.  Excellent for used in antenna coupling, line-by-pass, and across-the-line. Application where size is critical.

6.  Tested Standard:IEC384-14, DIN EN 132 400,UL 1414, CSA C22.2

7.  Safety Approved (UL. ENEC. CQC)

8.  The lead wire adopts the tin-plated tin and wraps up the copper wire, using the fire-retardant epoxy resin

encapsulation in the in the       plastic shell, fire-retardant performance reaches UL94V-0 grade.




1.  Operating temperature: -40°C ~ +110°C

2.  Capacitance range: 0.01uF~3.3uF

3.  Capacitance tolerance±5%(J), ± 10%(K),± 20%(M )

4.  Rated voltage: 310VAC,330VAC

5.  Dissipation factor:0.1%MAX AT 1KHz, 25°C

6.  Voltage proof: 2100VDC 1Sec (20°C)

 7.   Insulation resistance:

     >30,000MΩ (C≤0.33uF)

    >10,000MΩ/ uF (C>0.33uF) AT 25°C

8.  Endurance: The test voltage 344VAC shall be applied for 1000 Hours in the 85°C chamber. During this period,

1000VAC 60HZ for a        period of 0.1Sec be applied once each hour. After the test. ΔC/C≤10% , ΔDF≤0.04%,

ΔIR≥50% of the specified value.


Voltage Proof MPX MKP Metallised Polypropylene Film Capacitors X2 0.39uf 0


Small size.


Widetemperature,frequency irritating content DF with high stability.


High current withstands extremely highdielectric strength.


Long-term work stability.


Fire rating:UL94V-0.6.


There is self-healing.


Widely used with power supply jumpercircuits, bypass, antenna coupling and other interference sites.


Can withstand the pressure.



Overall structure

Meterial structure

Voltage Proof MPX MKP Metallised Polypropylene Film Capacitors X2 0.39uf 1


 PBT shell


 Metallized polypropylene film


  Tim-zinc alloy


 Tinned copper clad steel wire


  Epoxy potting compound






Dimensions in mm



















lead for use in line bypass, antenna coupling, across-the-line and spark killer circuits.
Available for EMI filter.
Switching power supply applications.
Business machines appliances, such as: adding machines, computer displays and monitors...
Household appliances, such as: mixers, fans, coffee grinders, DVD player, audio and TV circuits...
Thyristor and triac appliances, such as: dimmers...

Testing of Safety Capacitors

(1) Since the capacity of electrolytic capacitors is much larger than that of ordinary fixed capacitors, JEC safety capacitors should use appropriate ranges for different capacities when measuring. According to experience, in general, the capacitance between 1~47μF can be measured with R×1k file, and the capacitance larger than 47μF can be measured with R×100 file.

(2) Connect the red test lead of the multimeter to the negative pole, and the black test lead to the positive pole. At the moment of contact, the pointer of the multimeter first deflects a large deflection to the right (the same electric potential barrier, the larger the capacity, the greater the swing), and then gradually deflects to the left until it stops at a certain position. The resistance value at this time is the forward leakage resistance of the electrolytic capacitor, which is slightly larger than the reverse leakage resistance.

Practical experience shows that the leakage resistance of electrolytic capacitors should generally be above several hundred kΩ. Otherwise, it won't work properly. If there is no charge in the positive and negative directions during the test, the pointer does not move.

This means that the capacity has disappeared or the internal circuit is broken; if the measured resistance is small or zero, it means that the capacitor has a large leakage current or has been damaged by breakdown. It can no longer be used.

(3) For electrolytic capacitors with unknown positive and negative poles, the above method of measuring leakage resistance can be used to judge. That is to say, first measure the leakage resistance arbitrarily, remember its size, and then change the meter pen to measure a resistance value. The one with the larger resistance value in the two measurements is the positive connection method.

Specifically, the black test lead is connected to the positive pole, and the red test lead is connected to the negative pole. Then use the resistance gear of the multimeter and the positive and negative charging method of the electrolytic capacitor, and according to the size of the pointer swinging to the right, the capacity of the electrolytic capacitor can be estimated.

Contact Details
Dongguan HOWFINE Electronic Technology Co., Ltd.

Contact Person: Lei

Tel: 18929192705

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