Film Capacitors

Part Number	Description / PDF	Quantity
R82DC4150AA60J KEMET	CAP FILM 1.5UF 5% 63VDC RADIAL	771
MKP1839122631 Vishay BC Components/Beyshlag/Draloric	CAP FILM 220PF 1% 630VDC AXIAL	0
MKT1820322636W Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.022UF 20% 630VDC RAD	0
BFC233913274 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.27UF 10% 630VDC RAD	0
PHE426KD7150JR06L2 KEMET	CAP FILM 1.5UF 5% 400VDC RAD	0
B32620A4223K189 TDK EPCOS	CAP FILM 0.022UF 10% 400VDC RAD	0
BFC247076684 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.68UF 5% 63VDC RADIAL	0
B32653A1223J000 TDK EPCOS	CAP FILM 0.022UF 5% 1.6KVDC RAD	0
FCN3925E334K-V Cornell Dubilier Electronics	CAP FILM 0.33UF 10% 250VDC 3925	0
MKT1820410406 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.1UF 20% 400VDC RADIAL	0
MMK5103K63J01L16.5TR18 KEMET	CAP FILM 10000PF 10% 63VDC RAD	4430
333PPB202K Cornell Dubilier Electronics	CAP FILM 0.03UF 10% 2KVDC RADIAL	0
PHE820MB5330MR17 KEMET	CAP FILM 0.033UF 20% 275VAC RAD	206
B32621A3472J000 TDK EPCOS	CAP FILM 4700PF 5% 250VDC RADIAL	863
BFC241773304 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.33UF 2% 160VDC RADIAL	0
160184K250F-F Cornell Dubilier Electronics	CAP FILM 0.18UF 10% 250VDC RAD	0
SMDTC02100KA00MS00 WIMA	CAP FILM 10000PF 20% 63VDC 1812	0
ECH-U1104GC9 Panasonic	CAP FILM 0.1UF 2% 100VDC 2820	168
R60DI43304030K KEMET	CAP FILM 3.3UF 10% 63VDC RADIAL	784
ECH-U1C103GX5 Panasonic	CAP FILM 10000PF 2% 16VDC 0805	28132

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.