Film Capacitors

Part Number	Description / PDF	Quantity
B32656S0125K562 TDK EPCOS	CAP FILM 1.2UF 10% 1KVDC SCREW	76
DPPM20S1K-F Cornell Dubilier Electronics	CAP FILM 10000PF 10% 2KVDC RAD	130
225P15492XD3 Cornell Dubilier Electronics	CAP FILM 0.15UF 10% 200VDC RAD	23
FFLI6B1607K-- Elco (AVX)	CAP FILM 1600UF 10% 800VDC RAD	0
FFVS6B1286K-- Elco (AVX)	CAP FILM 128UF 10% 800VDC RADIAL	27
BFC237347274 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.27UF 10% 250VDC RAD	0
BFC2370EC473 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.047UF 5% 250VDC RAD	0
CMPX125K27AL275B-32X22X13 Trigon Components	CMPX-X2 FILM CAP 1.2UF 10%	10
BFC237242823 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.082UF 5% 250VDC RAD	0
B32354S3156K010 TDK EPCOS	CAP FILM 15UF 10% 500VDC RADIAL	27
890493423001CS Würth Elektronik Midcom	CAP FILM 0.015UF 10% 1KVDC RAD	0
935C4W3K-F Cornell Dubilier Electronics	CAP FILM 3UF 10% 400VDC AXIAL	25075
B32023A3104M289 TDK EPCOS	CAP FILM 0.1UF 20% 1.5KVDC RAD	0
B32524Q8474K000 TDK EPCOS	CAP FILM 0.47UF 10% 630VDC RAD	8
BFC237328125 Vishay BC Components/Beyshlag/Draloric	CAP FILM 1.2UF 5% 100VDC RADIAL	0
B32678G1156K000 TDK EPCOS	CAP FILM 15UF 10% 750VDC RADIAL	0
940C20P15K-F Cornell Dubilier Electronics	CAP FILM 0.15UF 10% 2KVDC AXIAL	1656
ECW-U1C224JC9 Panasonic	CAP FILM 0.22UF 5% 16VDC 1913	2551
ECH-U1C101JX5 Panasonic	CAP FILM 100PF 5% 16VDC 0603	36452
MKP1G016802C00KSSD WIMA	CAP FILM 6800PF 10% 400VDC RAD	8233

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.