Film Capacitors

Part Number	Description / PDF	Quantity
FKP2O111001I00KSSD WIMA	CAP FILM 1000PF 10% 1KVDC RAD	7987
MKX2AW31004C00MSSD WIMA	CAP FILM 0.1UF 20% 630VDC RAD	4131
SMDID04220YA00KS00 WIMA	CAP FILM 2.2UF 10% 100VDC 6054	0
MPX20W3100FG00MSSD WIMA	CAP FILM 0.1UF 20% 250VAC RAD	284
MKP4J041006D00KSSD WIMA	CAP FILM 1UF 10% 630VDC RAD	0
MKP4O121003F00KSSD WIMA	CAP FILM 10000PF 10% 1KVDC RAD	5477
FKP1Y016806D00JSSD WIMA	CAP FILM 6800PF 5% 6KVDC RAD	791
MKP4J024702F00KSSD WIMA	CAP FILM 0.047UF 10% 630VDC RAD	4103
DCP4I061009HD4KSSD WIMA	CAP FILM 100UF 10% 600VDC RAD	59
MKS2C023301A00JSSD WIMA	CAP FILM 0.033UF 5% 63VDC RAD	7041
DCP4P052007JD2MSSD WIMA	CAP FILM 20UF 20% 1.1KVDC RADIAL	2
FKP1G022204D00MSSD WIMA	CAP FILM 0.022UF 20% 400VDC RAD	3228
MKP4J043307F00MSSD WIMA	CAP FILM 3.3UF 20% 630VDC RAD	951
SMDTC03150TA00KQ00 WIMA	CAP FILM 0.15UF 10% 63VDC 2824	1331
MKS4S012203C00KSSD WIMA	CAP FILM 2200PF 10% 1.5KVDC RAD	271
MKS0C024700B00MSSD WIMA	CAP FILM 0.047UF 20% 63VDC RAD	19009
SMDTD03220TA00MS00 WIMA	CAP FILM 0.22UF 20% 100VDC 2824	0
SMDTC03330KB00KP00 WIMA	CAP FILM 0.33UF 10% 63VDC 1812	0
SMDIC03470QB00KP00 WIMA	CAP FILM 0.47UF 10% 63VDC 2220	3430
FKP2C014701D00JSSD WIMA	CAP FILM 4700PF 5% 63VDC RAD	10670

Film Capacitors

1. Overview

Film capacitors are a type of electronic component using plastic films (e.g., polypropylene, polyester) as dielectric materials. They are non-polarized capacitors with high insulation resistance, low loss, and excellent long-term stability. These capacitors play critical roles in power electronics, automotive systems, renewable energy, and consumer devices due to their reliability and high voltage-handling capabilities.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Polyester (PET)	Low cost, compact size, moderate temperature stability	General-purpose circuits, consumer electronics
Polypropylene (PP)	High voltage resistance, low dielectric loss, excellent thermal stability	Power supplies, motor drives, EV charging systems
Polycarbonate (PC)	High precision, low moisture absorption	Medical devices, aerospace instrumentation
Polyphenylene Sulfide (PPS)	High-temperature endurance, flame retardant	Automotive electronics, industrial automation
Polyimide (PI)	Ultra-high temperature resistance (up to 200 C), compact design	Aviation systems, downhole drilling equipment

3. Structure and Composition

Film capacitors typically consist of metalized plastic films wound or stacked into a cylindrical/rectangular core. The dielectric thickness ranges from 1-10 m, with electrode materials like zinc or aluminum. The assembly is encapsulated in epoxy resin or plastic housings. Key structural elements include:

Dielectric layer (plastic film)
Metallized electrode patterns
Termination electrodes (sprayed metal contacts)
Protective outer coating

4. Key Technical Parameters

Parameter	Description	Importance
Capacitance Range	0.1 nF - 100 F	Determines energy storage capacity
Rated Voltage	50 V - 10 kV	Defines operational safety limits
Capacitance Tolerance	1% to 20%	Affects circuit precision
Dissipation Factor	0.0001 - 0.05	Indicates energy efficiency
Insulation Resistance	10^9 - 10^12	Reflects leakage current performance
Operating Temperature	-55 C to +155 C	Dictates environmental adaptability
Temperature Coefficient	50 to 400 ppm/ C	Impacts stability under thermal stress
Stability	C/C < 2% over 10 years	Long-term reliability indicator

5. Application Fields

Main industries and equipment:

Power electronics: AC/DC converters, frequency inverters
Automotive: Electric vehicle (EV) on-board chargers, battery management systems
Consumer electronics: LED lighting, plasma TVs
Industrial: Uninterruptible power supplies (UPS), welding machines
Renewable energy: Solar inverters, wind turbine converters

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
TDK Corporation	B32656 series	PP film, 480 F/1200 V for industrial inverters
KEMET	C4AZ-X7R4U3D106KE	Automotive-grade DC link capacitor
AVX	6TP105K	Tantalum polymer hybrid for aerospace
Vishay	MKP1848 series	Self-healing PP technology

7. Selection Guidelines

Key considerations:

Determine required capacitance and voltage ratings with safety margins
Assess environmental conditions (temperature, humidity, vibration)
Evaluate dielectric absorption and frequency response requirements
Consider packaging constraints (through-hole vs. surface-mount)
Analyze cost-performance trade-offs for mass production

8. Industry Trends

Emerging trends include: development of high-power-density capacitors for EVs, adoption of nanodielectric materials for improved thermal stability, growth of biodegradable film technologies, and integration of smart monitoring features in industrial capacitors. The market is projected to grow at 7.2% CAGR (2023-2030), driven by renewable energy and 5G infrastructure demands.