Film Capacitors

Part Number	Description / PDF	Quantity
FKP3O112203D00KSSD WIMA	CAP FILM 2200PF 10% 1KVDC RAD	702
FKP1G021004B00KSSD WIMA	CAP FILM 10000PF 10% 400VDC RAD	177
MPX21W1470FB00MSSD WIMA	CAP FILM 4700PF 20% 275VAC RAD	157
DCP4H161309FD4JSC9 WIMA	CAP FILM 130UF 5% 500VDC RAD	38
SMDIC03220TB00KS00 WIMA	CAP FILM 0.22UF 10% 63VDC 2824	0
DCP4R245006JD2KSSD WIMA	CAP FILM 5UF 10% 1.3KVDC RADIAL	277
MKS4F026803C00KSSD WIMA	CAP FILM 0.068UF 10% 250VDC RAD	2364
MKS4G032203G00KSSD WIMA	CAP FILM 0.22UF 10% 400VDC RAD	4944
MKP1G033306A00JSSD WIMA	CAP FILM 0.33UF 5% 400VDC RAD	217
MKP4G033305B00MSSD WIMA	CAP FILM 0.33UF 20% 400VDC RAD	3
FKP3D021503D00KSSD WIMA	CAP FILM 0.015UF 10% 100VDC RAD	983
MKP4F026803C00JSSD WIMA	CAP FILM 0.068UF 5% 250VDC RAD	737
MKX2AW35605G00JSC9 WIMA	CAP FILM 0.56UF 5% 630VDC RAD	2344
MKX2AW41005I00KSSD WIMA	CAP FILM 1UF 10% 305VAC RADIAL	670
MKP4G041006B00JSSD WIMA	CAP FILM 1UF 5% 400VDC RAD	774
MKP1G023303F00MSSD WIMA	CAP FILM 0.033UF 20% 400VDC RAD	1378
SMDTC04470XA00MS00 WIMA	CAP FILM 4.7UF 20% 63VDC 5040	0
SMDTF03220VA00KS00 WIMA	CAP FILM 0.22UF 10% 250VDC 4030	0
MKS0B041000F00KSC9 WIMA	CAP FILM 1UF 10% 50VDC RAD	654
SMDNC04100TB00MQ00 WIMA	CAP FILM 1UF 20% 63VDC 2824	4930

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.