Film Capacitors

Part Number	Description / PDF	Quantity
R75UI222050H3J KEMET	CAP FILM 0.022UF 5% 2KVDC RADIAL	0
PHE844RF7100MR06L2 KEMET	CAP FILM 1UF 20% 1KVDC RADIAL	0
BFC237059822 Vishay BC Components/Beyshlag/Draloric	CAP FILM 8200PF 5% 400VDC RADIAL	0
R60IN43305030K KEMET	CAP FILM 3.3UF 10% 250VDC RADIAL	147
R75IW533050H4J KEMET	CAP FILM 33UF 5% 250VDC RADIAL	37
BFC238370622 Vishay BC Components/Beyshlag/Draloric	CAP FILM 6200PF 5% 2.5KVDC RAD	0
MKP1848C65560JY5 Vishay BC Components/Beyshlag/Draloric	CAP FILM 55UF 5% 600VDC RADIAL	0
FFVS6N0226K-- Elco (AVX)	CAP FILM 22UF 10% 1.9KVDC RADIAL	16
BFC233867273 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.027UF 10% 1KVDC RAD	0
944U101K102ABM Cornell Dubilier Electronics	CAP FILM 100UF 10% 1KVDC RADIAL	78
FB37H6C0106KC Elco (AVX)	CAP FILM 10UF 10% 900VDC RADIAL	0
EZP-E1D106MTA Panasonic	CAP FILM 10UF 10% 1.3KVDC RADIAL	33
MKP1848S61510JY5B Vishay BC Components/Beyshlag/Draloric	CAP FILM 15UF 5% 1KVDC RADIAL	0
CMPX153K301L100B-13X11X5 Trigon Components	CMPX-X1 FILM CAP 0.015UF 10%	0
MKP1848H61580KP4 Vishay BC Components/Beyshlag/Draloric	CAP FILM 15UF 10% 800VDC RADIAL	0
BFC2370EM224 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.22UF 5% 250VDC RADIAL	0
B32673Z6125K000 TDK EPCOS	CAP FILM 1.2UF 10% 630VDC RADIAL	0
B32521C6683K289 TDK EPCOS	CAP FILM 0.068UF 10% 400VDC RAD	0
ECW-FA2J224JQ Panasonic	CAP FILM 0.22UF 5% 630VDC RADIAL	0
MMK5223J50J01L4BULK KEMET	CAP FILM 0.022UF 5% 50VDC RADIAL	2000

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.