Film Capacitors

Part Number	Description / PDF	Quantity
SMDTC03100TA00MQ00 WIMA	CAP FILM 0.1UF 20% 63VDC 2824	1648
FKP1J022205D00KSSD WIMA	CAP FILM 0.022UF 10% 630VDC RAD	291
SMDID02220KA00MP00 WIMA	CAP FILM 0.022UF 20% 100VDC 1812	1034
SMDIF02100QA00KP00 WIMA	CAP FILM 10000PF 10% 250VDC 2220	580
MKP2D022201B00KSSD WIMA	CAP FILM 0.022UF 10% 100VDC RAD	20073
FKP2F012201D00JSSD WIMA	CAP FILM 2200PF 5% 250VDC RAD	10846
FKS3D013302B00KSSD WIMA	CAP FILM 3300PF 10% 100VDC RAD	4190
SMDTF02680QA00MS00 WIMA	CAP FILM 0.068UF 20% 250VDC 2220	0
SMDTF04100YA00JS00 WIMA	CAP FILM 1UF 5% 250VDC 6054	0
MKP4J033305F00KSSD WIMA	CAP FILM 0.33UF 10% 630VDC RAD	0
MKY22W41007E00KSSD WIMA	CAP FILM 1UF 10% 300VAC RAD	241
MKP1G041006D00KSSD WIMA	CAP FILM 1UF 10% 400VDC RAD	241
DCP4L061009JD4KSSD WIMA	CAP FILM 100UF 10% 800VDC RAD	0
FKS2D011501A00MSSD WIMA	CAP FILM 1500PF 20% 100VDC RAD	7487
DCP4L053007HD2KSSD WIMA	CAP FILM 30UF 10% 800VDC RAD	44
MKS2G021501A00MSSD WIMA	CAP FILM 0.015UF 20% 400VDC RAD	3939
MKPFAW42206F00KSSD WIMA	CAP FILM 2.2UF 10% 630VDC RADIAL	318
DCP4L061159JD4KSSD WIMA	CAP FILM 115UF 10% 800VDC RAD	40
MKPF3Y52007H00KSSD WIMA	CAP FILM 20UF 10% 450VDC RADIAL	99
FKP1Y021006F00KSSD WIMA	CAP FILM 10000PF 10% 6KVDC RAD	972

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.