Film Capacitors

Part Number	Description / PDF	Quantity
FKP2D011001D00KSSD WIMA	CAP FILM 1000PF 10% 100VDC RAD	4019
FKP2O101501D00JSSD WIMA	CAP FILM 150PF 5% 1KVDC RAD	11638
SMDTO12470YA00KT00 WIMA	CAP FILM 0.047UF 10% 1KVDC 6054	91
FKP1J024705H00JSSD WIMA	CAP FILM 0.047UF 5% 630VDC RAD	947
FKP0D013300D00JSSD WIMA	CAP FILM 3300PF 5% 100VDC RAD	391
MKS4G022203C00MSSD WIMA	CAP FILM 0.022UF 20% 400VDC RAD	23
FKP1T021506B00KSSD WIMA	CAP FILM 0.015UF 10% 1.6KVDC RAD	1404
FKP1R013304C00KSSD WIMA	CAP FILM 3300PF 10% 1.25KVDC RAD	4138
SMDTC02150TA00MQ00 WIMA	CAP FILM 0.015UF 20% 63VDC 2824	4465
SMDTD04100VA00KR00 WIMA	CAP FILM 1UF 10% 100VDC 4030	1034
MKX14W32205F00KSSD WIMA	CAP FILM 0.22UF 10% 440VAC RAD	459
FKP1R021505F00JSSD WIMA	CAP FILM 0.015UF 5% 1.25KVDC RAD	3353
MKS0C033300D00KSSD WIMA	CAP FILM 0.33UF 10% 63VDC RAD	8743
SMDTF03330XA00KS00 WIMA	CAP FILM 0.33UF 10% 250VDC 5040	0
MKS4F021003C00JSSD WIMA	CAP FILM 10000PF 5% 250VDC RAD	934
DCP4I056007JD4MSSD WIMA	CAP FILM 60UF 20% 600VDC RAD	11
FKP1O111004B00JSSD WIMA	CAP FILM 1000PF 5% 1KVDC RAD	916
FKP1T021005H00MSC9 WIMA	CAP FILM 10000PF 20% 1.6KVDC RAD	105
MKX2AW11502C00KSSD WIMA	CAP FILM 1500PF 10% 630VDC RAD	3820
FKP4T021505F00JSSD WIMA	CAP FILM 0.015UF 5% 1.6KVDC RAD	284

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.