Film Capacitors

Part Number	Description / PDF	Quantity
MKP1J024705B00JSC9 WIMA	CAP FILM 0.047UF 5% 630VDC RAD	3552
FKP1G032206D00MSSD WIMA	CAP FILM 0.22UF 20% 400VDC RAD	967
SMDTD03330QB00MP00 WIMA	CAP FILM 0.33UF 20% 100VDC 2220	509
FKP1J023305F00KSSD WIMA	CAP FILM 0.033UF 10% 630VDC RAD	1435
FKP4U022206B00KSSD WIMA	CAP FILM 0.022UF 10% 2KVDC RAD	908
MPX14W2330FG00KSSD WIMA	CAP FILM 0.033UF 10% 440VAC RAD	199
FKP2C022201J00KSSD WIMA	CAP FILM 0.022UF 10% 63VDC RAD	502
FKP0D001500B00JSSD WIMA	CAP FILM 150PF 5% 100VDC RAD	3028
MKP1G042206J00KSSD WIMA	CAP FILM 2.2UF 10% 400VDC RAD	53
DCP4L056509FD4KSSD WIMA	CAP FILM 65UF 10% 800VDC RAD	58
FKP2D014701G00HSSD WIMA	CAP FILM 4700PF 2.5% 100VDC RAD	8178
FKP2O101001D00KSSD WIMA	CAP FILM 100PF 10% 1KVDC RAD	6866
FKP2G002201D00JSSD WIMA	CAP FILM 220PF 5% 400VDC RAD	6523
FKP2F001501D00JSSD WIMA	CAP FILM 150PF 5% 250VDC RAD	23712
FKP1O111504B00MSSD WIMA	CAP FILM 1500PF 20% 1KVDC RAD	54
MKX2AW43307E00KSSD WIMA	CAP FILM 3.3UF 10% 630VDC RAD	985
MKP4O136806G00MSSD WIMA	CAP FILM 0.68UF 20% 1KVDC RAD	105
MKP1T034707F00JSSD WIMA	CAP FILM 0.47UF 5% 1.6KVDC RAD	12
FKP2G001001D00KSSD WIMA	CAP FILM 100PF 10% 400VDC RAD	5907
MKP2G021501C00KSSD WIMA	CAP FILM 0.015UF 10% 400VDC RAD	1814

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.