Film Capacitors

Part Number	Description / PDF	Quantity
BFC237327125 Vishay BC Components/Beyshlag/Draloric	CAP FILM 1.2UF 10% 100VDC RADIAL	0
940C8W2P5K-F Cornell Dubilier Electronics	CAP FILM 2.5UF 10% 850VDC AXIAL	36100
BFC2370EC184 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.18UF 5% 250VDC RADIAL	0
F17725152200 Vishay BC Components/Beyshlag/Draloric	CAP FILM 1.5UF 20% 630VDC RADIAL	0
B32654A0224K189 TDK EPCOS	CAP FILM 0.22UF 10% 1KVDC RADIAL	0
MKP386M468085JT5 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.68UF 5% 850VDC SCREW	0
F17723332000 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.033UF 10% 630VDC RAD	717
104MKP275K Cornell Dubilier Electronics	CAP FILM 0.1UF 10% 310VAC RADIAL	24444
B32529C1394K289 TDK EPCOS	CAP FILM 0.39UF 10% 100VDC RAD	0
ECQ-E2183JB3 Panasonic	CAP FILM 0.018UF 5% 250VDC RAD	0
B32672Z6473J289 TDK EPCOS	CAP FILM 0.047UF 5% 630VDC RAD	0
FMD6D0154K02L Elco (AVX)	CAP FILM 0.15UF 10% 250VDC RAD	0
QXK2J223JTP Nichicon	CAP FILM 0.022UF 5% 630VDC RAD	0
R73QI1470SE30K KEMET	CAP FILM 4700PF 10% 1KVDC RADIAL	3708
B32653A3904J000 TDK EPCOS	CAP FILM 0.9UF 5% 250VDC RADIAL	0
C44UJGT6225A8TK KEMET	CAP FILM 225UF 10% 700VDC RADIAL	49
B32686S0684K563 TDK EPCOS	CAP FILM 0.68UF 10% 1KVDC SCREW	0
MKS0F026800E00KSSD WIMA	CAP FILM 0.068UF 10% 250VDC RAD	0
PMB2123470KVP Nichicon	1200V,0.47UF,10 PERCENT, LUG MOU	0
ECQ-E1106JFB Panasonic	CAP FILM 10UF 5% 100VDC RADIAL	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.