Film Capacitors

Part Number	Description / PDF	Quantity
334HC2800K2CM6 Cornell Dubilier Electronics	CAP FILM 0.33UF 800VAC CHAS MT	68
930C6S82K-F Cornell Dubilier Electronics	CAP FILM 0.082UF 630VDC AXIAL	0
WMC2S1K-F Cornell Dubilier Electronics	CAP FILM 10000PF 250VDC AXIAL	800
SFC44T25K391B-F Cornell Dubilier Electronics	CAP FILM 25UF 10% 440VAC RADIAL	0
ALH306K251C064 Cornell Dubilier Electronics	30UF 250VAC 57.5X45X30MM LS=52.5	150
930C2P82K-F Cornell Dubilier Electronics	CAP FILM 0.82UF 10% 250VDC AXIAL	0
DMT1S22K-F Cornell Dubilier Electronics	CAP FILM 0.022UF 10% 100VDC RAD	0
334MSR250K Cornell Dubilier Electronics	CAP FILM 0.33UF 10% 250VDC RAD	1205
T30W1NR-F Cornell Dubilier Electronics	CAP FILM 1UF 10% 3KVDC RADIAL	0
930C2W3K-F Cornell Dubilier Electronics	CAP FILM 3UF 10% 250VDC AXIAL	15
168224K100G-F Cornell Dubilier Electronics	CAP FILM 0.22UF 10% 100VDC RAD	0
BLC300J701B4D Cornell Dubilier Electronics	CAP FILM 30UF 5% 700VDC RADIAL	0
DMT1P33K-F Cornell Dubilier Electronics	CAP FILM 0.33UF 10% 100VDC RAD	0
168332K250A-F Cornell Dubilier Electronics	CAP FILM 3300PF 10% 250VDC RAD	0
FCP1206C273J-H2 Cornell Dubilier Electronics	CAP FILM 0.027UF 5% 16VDC 1206	0
SCRN239R-F Cornell Dubilier Electronics	CAP FILM 20UF 10% 1KVPK RADIAL	0
684MPW630K Cornell Dubilier Electronics	CAP FILM 0.68UF 10% 630VDC AXIAL	6321650
SCRN222R-F Cornell Dubilier Electronics	CAP FILM 5UF 10% 600VPK RADIAL	1
224PPB102K Cornell Dubilier Electronics	CAP FILM 0.22UF 10% 1KVDC RADIAL	269
225P10392XD3 Cornell Dubilier Electronics	CAP FILM 10000PF 10% 200VDC 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.