Film Capacitors

Part Number	Description / PDF	Quantity
223MPW250K Cornell Dubilier Electronics	CAP FILM 0.022UF 250VDC AXIAL	0
171472K630C-F Cornell Dubilier Electronics	CAP FILM 4700PF 10% 630VDC RAD	0
BFC247049103 Vishay BC Components/Beyshlag/Draloric	CAP FILM 1000PF 5% 250VDC RADIAL	0
BFC233913122 Vishay BC Components/Beyshlag/Draloric	CAP FILM 1200PF 10% 630VDC RAD	0
R413I233040M1M KEMET	CAP FILM 0.033UF 20% 1KVDC RAD	1314
B32654A4105J189 TDK EPCOS	CAP FILM 1UF 5% 400VDC RADIAL	0
B25620B1347K321 TDK EPCOS	CAP FILM 340UF 10% 1.32KVDC RAD	0
R46KN4150JHP1M KEMET	CAP FILM 1.5UF 20% 560VDC RADIAL	396
B32672P4224K189 TDK EPCOS	CAP FILM 0.22UF 10% 450VDC RAD	0
BFC237022392 Vishay BC Components/Beyshlag/Draloric	CAP FILM 3900PF 5% 100VDC RADIAL	0
BFC238300135 Vishay BC Components/Beyshlag/Draloric	CAP FILM 1.3UF 5% 250VDC RADIAL	0
BFC233868194 Vishay BC Components/Beyshlag/Draloric	CAP FILM 8200PF 10% 1KVDC RADIAL	0
BFC237042822 Vishay BC Components/Beyshlag/Draloric	CAP FILM 8200PF 5% 250VDC RADIAL	0
BFC233922103 Vishay BC Components/Beyshlag/Draloric	CAP FILM 10000PF 20% 630VDC RAD	0
MKP1839410163R Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.1UF 2.5% 160VDC AXIAL	0
184683J63RAB-F Cornell Dubilier Electronics	CAP FILM 0.068UF 5% 63VDC RADIAL	0
ECQ-E6273JF3 Panasonic	CAP FILM 0.027UF 5% 630VDC RAD	0
B32520C6153K TDK EPCOS	CAP FILM 0.015UF 10% 400VDC RAD	0
C4AQOBU4700M1EJ KEMET	CAP FILM 7UF 5% 900VDC RADIAL	0
R46KI315000P0M KEMET	CAP FILM 0.15UF 20% 560VDC 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.