Film Capacitors

Part Number	Description / PDF	Quantity
171223K400D-F Cornell Dubilier Electronics	CAP FILM 0.022UF 10% 400VDC RAD	0
QXK2J474JTP Nichicon	CAP FILM 0.47UF 5% 630VDC RAD	0
BFC2370FM104 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.1UF 5% 400VDC RADIAL	0
B32923D3334M000 TDK EPCOS	CAP FILM 0.33UF 20% 630VDC RAD	0
QXP2K473KRPT Nichicon	CAP FILM 0.047UF 10% 800VDC RAD	319
B32521C3474K289 TDK EPCOS	CAP FILM 0.47UF 10% 250VDC RAD	0
SFP37T25K284B-F Cornell Dubilier Electronics	CAP FILM 25UF 10% 370VAC RADIAL	0
PHE844RF6470MR06L2 KEMET	CAP FILM 0.47UF 20% 1KVDC RADIAL	245
B32653A6474K289 TDK EPCOS	CAP FILM 0.47UF 10% 630VDC RAD	0
PHE450MA5100JR05 KEMET	CAP FILM 10000PF 5% 630VDC RAD	4370
F17724152160 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.15UF 10% 630VDC RAD	0
BFC246806125 Vishay BC Components/Beyshlag/Draloric	CAP FILM 1.2UF 10% 100VDC RADIAL	0
R413I222000M1M KEMET	CAP FILM 0.022UF 20% 1KVDC RAD	44562
BFC237075824 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.82UF 10% 63VDC RADIAL	0
ECQ-UBAF223K Panasonic	CAP FILM 0.022UF 10% 300VAC RADI	0
EZP-V1B156MTB Panasonic	CAP FILM 15UF 10% 1100V RADIAL	97
ECW-U1184KC9 Panasonic	CAP FILM 0.18UF 10% 100VDC 2820	52
155LC2500K5HM6 Cornell Dubilier Electronics	CAP FILM 1.5UF 500VAC CHAS MT	3
BFC247048273 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.027UF 10% 250VDC RAD	0
BFC237028334 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.33UF 10% 100VDC 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.