Film Capacitors

Part Number	Description / PDF	Quantity
B32560J3154K000 TDK EPCOS	CAP FILM 0.15UF 10% 250VDC 2DIP	0
B32371A4606J080 TDK EPCOS	CAP FILM 60UF 5% 480VAC RADIAL	0
B32521E6153J000 TDK EPCOS	CAP FILM 0.015UF 5% 400VDC RAD	0
B32529C1224J189 TDK EPCOS	CAP FILM 0.22UF 5% 100VDC RADIAL	7764
B32671L6563J000 TDK EPCOS	CAP FILM 0.056UF 5% 630VDC RAD	0
B32676E6475J000 TDK EPCOS	CAP FILM 4.7UF 5% 630VDC RADIAL	0
B32912B3334M289 TDK EPCOS	CAP FILM 0.33UF 20% 760VDC RAD	0
B32653A3334J189 TDK EPCOS	CAP FILM 0.33UF 5% 250VDC RADIAL	0
B32521C0105K289 TDK EPCOS	CAP FILM 1UF 10% 63VDC RADIAL	0
B32774H0475K000 TDK EPCOS	CAP FILM 4.7UF 10% 920VDC RADIAL	926
B32529C1474J189 TDK EPCOS	CAP FILM 0.47UF 5% 100VDC RADIAL	832
B32653A4224J000 TDK EPCOS	CAP FILM 0.22UF 5% 400VDC RADIAL	0
B32522C1335K189 TDK EPCOS	CAP FILM 3.3UF 10% 100VDC RADIAL	2654
B32672L8912K000 TDK EPCOS	CAP FILM 9100PF 10% 2KVDC RADIAL	0
B32672Z6564J000 TDK EPCOS	CAP FILM 0.56UF 5% 630VDC RADIAL	0
B32652A4334J000 TDK EPCOS	CAP FILM 0.33UF 5% 400VDC RADIAL	2318
B32529C0332K189 TDK EPCOS	CAP FILM 3300PF 10% 63VDC RADIAL	6041
B32671Z6103K000 TDK EPCOS	CAP FILM 10000PF 10% 630VDC RAD	0
B32529C1152K000 TDK EPCOS	CAP FILM 1500PF 10% 100VDC RAD	7997
B32529C0155M189 TDK EPCOS	CAP FILM 1.5UF 20% 63VDC 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.