Film Capacitors

Part Number	Description / PDF	Quantity
B32672Z4154K000 TDK EPCOS	CAP FILM 10% 450VDC RADIAL	0
947C361K801CAMS Cornell Dubilier Electronics	CAP FILM 360UF 10% 800VDC RADIAL	113
ECW-F4624HL Panasonic	CAP FILM 0.62UF 3% 400VDC RADIAL	550
B32361A3606J030 TDK EPCOS	CAP FILM 60UF 5% 460VAC RADIAL	0
C4AQJEW6110M3AJ KEMET	CAP FILM 110UF 5% 700VDC RADIAL	0
BFC237266123 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.012UF 5% 630VDC RAD	0
B32021A3102K189 TDK EPCOS	CAP FILM 1000PF 10% 300VAC RAD	0
225P47491XD3 Cornell Dubilier Electronics	CAP FILM 0.47UF 10% 100VDC RAD	232
890324027030CS Würth Elektronik Midcom	CAP FILM 4.7UF 10% 275VAC RADIAL	0
105PHB400K2H Cornell Dubilier Electronics	CAP FILM 1UF 10% 400VDC RADIAL	0
BFC237016224 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.22UF 5% 63VDC RADIAL	0
C44PRGR5680RASK KEMET	CAP FILM 68UF 10% 1.4KVDC RADIAL	3
154PPB630K Cornell Dubilier Electronics	CAP FILM 0.15UF 10% 630VDC RAD	49400
C4AQSEW5320A3AJ KEMET	CAP FILM 32UF 5% 1.5KVDC RAD	0
B32652A3504J000 TDK EPCOS	CAP FILM 0.5UF 5% 250VDC RADIAL	0
F339X136833KFP2B0 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.068UF 10% 800VDC RAD	0
B32653A4105K289 TDK EPCOS	CAP FILM 1UF 10% 400VDC RADIAL	0
BFC247059222 Vishay BC Components/Beyshlag/Draloric	CAP FILM 2200PF 5% 400VDC RADIAL	0
ECQ-E6224JFB Panasonic	CAP FILM 0.22UF 5% 630VDC RADIAL	0
MKP1G034706A00KSSD WIMA	CAP FILM 0.47UF 10% 400VDC RAD	2350

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.