Film Capacitors

Part Number	Description / PDF	Quantity
MKS4O132205G00MSSD WIMA	CAP FILM 0.22UF 20% 1KVDC RAD	0
MKP1J034706B00JSSD WIMA	CAP FILM 0.47UF 5% 630VDC RAD	0
MKS4O111502B00MSSD WIMA	CAP FILM 1500PF 20% 1KVDC RAD	1899
MKS2B044701K00KSC9 WIMA	CAP FILM 4.7UF 10% 50VDC RAD	229
FKP2G002201D00KSSD WIMA	CAP FILM 220PF 10% 400VDC RAD	643
FKP2C022201J00JSSD WIMA	CAP FILM 0.022UF 5% 63VDC RAD	15597
MKP1T031506D00KSSD WIMA	CAP FILM 0.15UF 10% 1.6KVDC RAD	948
FKP2C021501I00JSSD WIMA	CAP FILM 0.015UF 5% 63VDC RAD	3060
FKP1U023307C00MSSD WIMA	CAP FILM 0.033UF 20% 2KVDC RAD	219
DCP4L053507ID2KSSD WIMA	CAP FILM 35UF 10% 800VDC RAD	17
FKP2J016801J00HSSD WIMA	CAP FILM 6800PF 2.5% 630VDC RAD	1399
MKP4O141007E00KSSD WIMA	CAP FILM 1UF 10% 1KVDC RAD	344
FKP3C023303D00KSSD WIMA	CAP FILM 0.033UF 10% 63VDC RAD	1586
FKP0D003300B00KSSD WIMA	CAP FILM 330PF 10% 100VDC RAD	9598
MKS4B046803G00JSSD WIMA	CAP FILM 6.8UF 5% 50VDC RAD	1797
FKP1U001504B00JSSD WIMA	CAP FILM 150PF 5% 2KVDC RAD	9693
MKS4O141006G00JSSD WIMA	CAP FILM 1UF 5% 1KVDC RAD	387
SMDTD02680KA00MS00 WIMA	CAP FILM 0.068UF 20% 100VDC 1812	0
SMDTD02680KA00MP00 WIMA	CAP FILM 0.068UF 20% 100VDC 1812	11346
MKS4F051006G00KSSD WIMA	CAP FILM 10UF 10% 250VDC RAD	200

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.