Film Capacitors

Part Number	Description / PDF	Quantity
MKP2G011001B00MSSD WIMA	CAP FILM 1000PF 20% 400VDC RAD	4025
MKS4D053307C00JSSD WIMA	CAP FILM 33UF 5% 100VDC RAD	345
FKP1G024705D00KSSD WIMA	CAP FILM 0.047UF 10% 400VDC RAD	2179
MKP1U016804C00MSSD WIMA	CAP FILM 6800PF 20% 2KVDC RAD	602
MKS4F051006G00MSSD WIMA	CAP FILM 10UF 20% 250VDC RAD	396
MKP1V022205I00MSSD WIMA	CAP FILM 0.022UF 20% 2.5KVDC RAD	72
MKP1G043307G00MSSD WIMA	CAP FILM 3.3UF 20% 400VDC RAD	74
MKS4C052206D00KSSD WIMA	CAP FILM 22UF 10% 63VDC RAD	33
FKS3G011003A00MSSD WIMA	CAP FILM 1000PF 20% 400VDC RAD	621
MKX2AW41006D00JSSD WIMA	CAP FILM 1UF 5% 630VDC RAD	58
FKS3F021003A00JSSD WIMA	CAP FILM 10000PF 5% 250VDC RAD	9754
MKX2AW34705F00KSC9 WIMA	CAP FILM 0.47UF 10% 630VDC RAD	148
SMDIC02100KA00MP00 WIMA	CAP FILM 10000PF 20% 63VDC 1812	1805
FKS3F013302B00KSSD WIMA	CAP FILM 3300PF 10% 250VDC RAD	6852
MKP1O123304D00JSC9 WIMA	CAP FILM 0.033UF 5% 1KVDC RAD	3166
SMDIC03100QA00MS00 WIMA	CAP FILM 0.1UF 20% 63VDC 2220	0
FKS2G013301A00JSSD WIMA	CAP FILM 3300PF 5% 400VDC RAD	343
MKS4G041005G00MSSD WIMA	CAP FILM 1UF 20% 400VDC RAD	4387
FKP1T023306D00KSC9 WIMA	CAP FILM 0.033UF 10% 1.6KVDC RAD	394
MKS4F042205G00KSSD WIMA	CAP FILM 2.2UF 10% 250VDC RAD	3

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.