Film Capacitors

Part Number	Description / PDF	Quantity
F339X142248KIM2T0 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.22UF 10% 1KVDC RADIAL	0
ECQ-E2685KFB Panasonic	CAP FILM 6.8UF 10% 250VDC RADIAL	0
FFV34I0406K-- Elco (AVX)	CAP FILM 40UF 10% 400VDC RADIAL	0
ECW-U2182JC9 Panasonic	CAP FILM 1800PF 5% 250VDC 1913	0
QXK2E106KTP Nichicon	CAP FILM 10UF 10% 250VDC RADIAL	0
MKP386M456100JT5 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.56UF 5% 1KVDC SCREW	0
930C2W5P6K-F Cornell Dubilier Electronics	CAP FILM 5.6UF 10% 250VDC AXIAL	0
R463N347050M1K KEMET	CAP FILM 0.47UF 10% 630VDC RAD	580
R76QI2330SE40J KEMET	CAP FILM 0.033UF 5% 1KVDC RADIAL	1000
BFC247048223 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.022UF 10% 250VDC RAD	0
B32652J1472K000 TDK EPCOS	CAP FILM 4700PF 10% 1.6KVDC RAD	0
B32524R6225J000 TDK EPCOS	CAP FILM 2.2UF 5% 400VDC RADIAL	1297
QYX1H223JTP Nichicon	CAP FILM 0.022UF 5% 50VDC RADIAL	9
B32934B3225M000 TDK EPCOS	CAP FILM 2.2UF 20% 305VAC RADIAL	0
B32024A3564M000 TDK EPCOS	CAP FILM 0.56UF 20% 1.5KVDC RAD	607
474PSB252K2R Cornell Dubilier Electronics	CAP FILM 0.47UF 10% 2.5KVDC RAD	0
B32529C0152K289 TDK EPCOS	CAP FILM 1500PF 10% 63VDC RADIAL	6014
BFC247058103 Vishay BC Components/Beyshlag/Draloric	CAP FILM 1000PF 10% 400VDC RAD	0
F862DB154K310ZV054 KEMET	CAP FILM 0.15UF 10% 630VDC RAD	0
B32529D0225J289 TDK EPCOS	CAP FILM 2.2UF 5% 63VDC RADIAL	101

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.