Film Capacitors

Part Number	Description / PDF	Quantity
B32560J8102J000 TDK EPCOS	CAP FILM 1000PF 5% 630VDC 2DIP	0
B32912A3104M289 TDK EPCOS	CAP FILM 0.1UF 20% 760VDC RADIAL	0
B32922P3334M000 TDK EPCOS	FILM CAP MKP X2 - 125C, 0.33UF 2	990
B32529C3334M289 TDK EPCOS	CAP FILM 0.33UF 20% 250VDC RAD	0
B32916A5564M TDK EPCOS	CAP FILM 0.56UF 20% 1KVDC RADIAL	0
B32921C3683M000 TDK EPCOS	CAP FILM 0.068UF 20% 630VDC RAD	0
B32641B0153J TDK EPCOS	CAP FILM 0.015UF 5% 1KVDC RADIAL	12218
B32529C6562J289 TDK EPCOS	CAP FILM 5600PF 5% 400VDC RADIAL	0
B32521C6223K TDK EPCOS	CAP FILM 0.022UF 10% 400VDC RAD	95
B32529C1272J289 TDK EPCOS	CAP FILM 2700PF 5% 100VDC RADIAL	0
B32653A3684J000 TDK EPCOS	CAP FILM 0.68UF 5% 250VDC RADIAL	0
B32754C7705K000 TDK EPCOS	CAP FILM 7UF 10% 560VDC RADIAL	442
B32676G1565K000 TDK EPCOS	CAP FILM 5.6UF 10% 750VDC RADIAL	0
B32560J1474K000 TDK EPCOS	CAP FILM 0.47UF 10% 100VDC 2DIP	0
B32529C1333M189 TDK EPCOS	CAP FILM 0.033UF 20% 100VDC RAD	11200
B32656A7224J000 TDK EPCOS	CAP FILM 0.22UF 5% 1.25KVDC RAD	0
B32521C3104J289 TDK EPCOS	CAP FILM 0.1UF 5% 250VDC RADIAL	5000
B32654A1683K000 TDK EPCOS	CAP FILM 0.068UF 10% 1.6KVDC RAD	1234
B32529C1394J289 TDK EPCOS	CAP FILM 0.39UF 5% 100VDC RADIAL	0
B32926C3106K000 TDK EPCOS	CAP FILM 10UF 10% 630VDC RADIAL	413

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.