Film Capacitors

Part Number	Description / PDF	Quantity
MKP1839322251 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.022UF 1% 250VDC AXIAL	0
R46KR410040M1M KEMET	CAP FILM 1UF 20% 560VDC RADIAL	226
LDEQG2470KA5N00 KEMET	CAP FILM 0.047UF 10% 1KVDC 5040	1346
171334K160G-F Cornell Dubilier Electronics	CAP FILM 0.33UF 10% 160VDC RAD	0
BFC237352824 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.82UF 5% 400VDC RADIAL	0
BFC2370GC183 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.018UF 5% 630VDC RAD	0
BFC233863394 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.39UF 10% 1KVDC RADIAL	0
MKP1848C58012JP4 Vishay BC Components/Beyshlag/Draloric	CAP FILM 8UF 5% 1.2KVDC RADIAL	0
R60MI33305030K KEMET	CAP FILM 0.33UF 10% 400VDC RAD	1
ECW-F2334JAB Panasonic	CAP FILM 0.33UF 5% 250VDC RADIAL	0
BFC233863123 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.012UF 10% 1KVDC RAD	0
B32914A3474K189 TDK EPCOS	CAP FILM 0.47UF 10% 760VDC RAD	0
MKP1839051634G Vishay BC Components/Beyshlag/Draloric	CAP FILM 51PF 5% 630VDC AXIAL	0
MKS4G044706G00MSSD WIMA	CAP FILM 4.7UF 20% 400VDC RAD	65
F17724102000 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.1UF 10% 630VDC RADIAL	470
BFC246862185 Vishay BC Components/Beyshlag/Draloric	CAP FILM 1.8UF 5% 100VDC RADIAL	0
C4ASNBW3470A3EJ KEMET	CAP FILM 0.47UF 5% 1KVDC RADIAL	0
BFC242012703 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.027UF 2% 630VDC RAD	0
890334024001 Würth Elektronik Midcom	CAP FILM 0.15UF 10% 310VAC RAD	42
BFC233925332 Vishay BC Components/Beyshlag/Draloric	CAP FILM 3300PF 20% 630VDC 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.