Film Capacitors

Part Number	Description / PDF	Quantity
R75MI3220DQ30J KEMET	CAP FILM 0.22UF 5% 400VDC RADIAL	461
R76QN31805050J KEMET	FILM, RADIAL, PULSE, DOUBLE META	0
C4AQPEW5360M3AJ KEMET	CAP FILM 36UF 5% 1.2KVDC RADIAL	0
R60DW6100AA40K KEMET	CAP FILM 100UF 10% 63VDC RADIAL	225
R463N347050M1K KEMET	CAP FILM 0.47UF 10% 630VDC RAD	580
R76QI2330SE40J KEMET	CAP FILM 0.033UF 5% 1KVDC RADIAL	1000
F862DB154K310ZV054 KEMET	CAP FILM 0.15UF 10% 630VDC RAD	0
R76PN33304030J KEMET	CAP FILM 0.33UF 5% 630VDC RADIAL	1480
R82EC2820SH60J KEMET	CAP FILM 0.08UF 5% 100VDC RADIAL	0
PHE845VD5100MR30L2 KEMET	CAP FILM 10000PF 20% 1.5KVDC RAD	1640
4ATHBW5100A3LJ KEMET	CAP FILM 10UF 5% 600VDC RADIAL	77
R60MR4100AA30K KEMET	CAP FILM 1UF 10% 400VDC RAD	1136
R60EF3470506AJ KEMET	CAP FILM 0.47UF 5% 100VDC RADIAL	1288
C44PKGR6300RASK KEMET	CAP FILM 300UF 10% 1KVDC RADIAL	1
R46KW422000P0K KEMET	CAP FILM 2.2UF 10% 560VDC RAD	0
R46KR410040M1M KEMET	CAP FILM 1UF 20% 560VDC RADIAL	226
LDEQG2470KA5N00 KEMET	CAP FILM 0.047UF 10% 1KVDC 5040	1346
R60MI33305030K KEMET	CAP FILM 0.33UF 10% 400VDC RAD	1
C4ASNBW3470A3EJ KEMET	CAP FILM 0.47UF 5% 1KVDC RADIAL	0
LDEEA1330JA0N00 KEMET	CAP FILM 3300PF 5% 100VDC 1206	2810

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.