Film Capacitors

Part Number	Description / PDF	Quantity
FFLB6A0387K-- Elco (AVX)	CAP FILM 380UF 10% 680VDC RADIAL	0
R533W520050P0K KEMET	CAP FILM 20UF 10% 630VDC RADIAL	0
PHE850EF6150MF11R06L2 KEMET	CAP FILM 0.15UF 20% 1.25KVDC RAD	0
ECW-FG60395J Panasonic	CAP FILM 3.9UF 600VDC RADIAL	0
FKP1X004705A00KSSD WIMA	CAP FILM 470PF 10% 4KVDC RADIAL	132
890334025027 Würth Elektronik Midcom	CAP FILM 0.22UF 10% 310VAC RAD	950
R46KN322000M1M KEMET	CAP FILM 0.22UF 20% 560VDC RAD	5161
ECW-FA2J104J Panasonic	CAP FILM 0.1UF 5% 630VDC RADIAL	5092
BFC233990028 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.012UF 10% 630VDC RAD	0
BFC247076104 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.1UF 5% 63VDC RADIAL	493
MKP1839156631R Vishay BC Components/Beyshlag/Draloric	CAP FILM 560PF 1% 630VDC AXIAL	0
B32529C0474M189 TDK EPCOS	CAP FILM 0.47UF 20% 63VDC RADIAL	0
MKP386M447100JT5 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.47UF 5% 1KVDC SCREW	0
F17725222263 Vishay BC Components/Beyshlag/Draloric	CAP FILM 2.2UF 20% 630VDC RADIAL	0
BFC247052333 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.033UF 5% 400VDC RAD	0
185103K400RFB-F Cornell Dubilier Electronics	CAP FILM 10000PF 10% 400VDC RAD	0
PHE450MK4390JR05 KEMET	CAP FILM 3900PF 5% 630VDC RADIAL	543
C4AQJBU5100M11J KEMET	CAP FILM 10UF 5% 700VDC RADIAL	37
BFC237258333 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.033UF 10% 400VDC RAD	0
SMR5103J63J01L16.5CBULK KEMET	CAP FILM 10000PF 5% 63VDC RADIAL	1456

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.