Film Capacitors

Part Number	Description / PDF	Quantity
BFC237022223 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.022UF 5% 100VDC RAD	0
MKP1848C65580JY5 Vishay BC Components/Beyshlag/Draloric	CAP FILM 55UF 5% 800VDC RADIAL	0
BFC237049272 Vishay BC Components/Beyshlag/Draloric	CAP FILM 2700PF 5% 250VDC RADIAL	0
C4DEIPQ6140A8TK KEMET	CAP FILM 140UF 10% 800VDC RADIAL	8
R75TI227050H3J KEMET	CAP FILM 0.027UF 5% 1.6KVDC RAD	489
MKP1839075635R Vishay BC Components/Beyshlag/Draloric	CAP FILM 75PF 10% 630VDC AXIAL	0
B32932B3274K000 TDK EPCOS	CAP FILM 0.27UF 10% 500VDC RAD	0
ECW-FA2J564J Panasonic	CAP FILM 0.56UF 5% 630VDC RADIAL	571
B32620A4103J000 TDK EPCOS	CAP FILM 10000PF 5% 400VDC RAD	0
F339X122233KC02W0 Vishay BC Components/Beyshlag/Draloric	CAP FILM 2200PF 10% 800VDC RAD	0
BFC233910563 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.056UF 10% 630VDC RAD	0
ECW-F4154JL Panasonic	CAP FILM 0.15UF 5% 400VDC RADIAL	0
ECQ-E4183JFB Panasonic	CAP FILM 0.018UF 5% 400VDC RAD	0
LDECA2220MA0N00 KEMET	CAP FILM 0.022UF 20% 50VDC 1206	0
ECQ-E6124RJF Panasonic	CAP FILM 0.12UF 5% 630VDC RADIAL	0
B32529C0393J189 TDK EPCOS	CAP FILM 0.039UF 5% 63VDC RADIAL	0
PFR5682J63J11L4BULK KEMET	CAP FILM 6800PF 5% 63VDC RADIAL	112
MMK5332K100J01L4BULK KEMET	CAP FILM 3300PF 10% 100VDC RAD	0
ECW-FD2J274K Panasonic	CAP FILM 0.27UF 10% 630VDC RAD	1087
B32620A6332K000 TDK EPCOS	CAP FILM 3300PF 10% 630VDC RAD	0

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.