Film Capacitors

Part Number	Description / PDF	Quantity
MKP1F031004B00KSSD WIMA	CAP FILM 0.1UF 10% 250VDC RAD	3913
MKS4O111002B00MSSD WIMA	CAP FILM 1000PF 20% 1KVDC RAD	2655
FKP2C012201D00KSSD WIMA	CAP FILM 2200PF 10% 63VDC RAD	6954
FKP3F022204C00JSSD WIMA	CAP FILM 0.022UF 5% 250VDC RAD	1845
SMDTD02100KA00MS00 WIMA	CAP FILM 10000PF 20% 100VDC 1812	0
FKP1O126806D00KSSD WIMA	CAP FILM 0.068UF 10% 1KVDC RAD	1792
MKS4F052207F00KSSD WIMA	CAP FILM 22UF 10% 250VDC RAD	0
MKS2B043301H00MSSD WIMA	CAP FILM 3.3UF 20% 50VDC RAD	1474
FKP1J023305F00JSSD WIMA	CAP FILM 0.033UF 5% 630VDC RAD	1376
FKP3G022204D00JSSD WIMA	CAP FILM 0.022UF 5% 400VDC RAD	466
MKP1F034705D00JSSD WIMA	CAP FILM 0.47UF 5% 250VDC RAD	1510
SMDTD03470QB00MP00 WIMA	CAP FILM 0.47UF 20% 100VDC 2220	1893
FKP2D016801G00JSSD WIMA	CAP FILM 6800PF 5% 100VDC RAD	434
DCP4P052007ID4KSSD WIMA	CAP FILM 20UF 10% 1.1KVDC RADIAL	51
MKS4G043306D00KSSD WIMA	CAP FILM 3.3UF 10% 400VDC RAD	115
FKP1T016805F00KSSD WIMA	CAP FILM 6800PF 10% 1.6KVDC RAD	755
MKX2AW33304J00KSSD WIMA	CAP FILM 0.33UF 10% 630VDC RAD	2700
MKP2F034701N00KSSD WIMA	CAP FILM 0.47UF 10% 250VDC RAD	778
MKS4G031502F00KSSD WIMA	CAP FILM 0.15UF 10% 400VDC RAD	1680
FKP0C003300B00KSSD WIMA	CAP FILM 330PF 10% 63VDC RAD	7205

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.