Film Capacitors

Part Number	Description / PDF	Quantity
SMDTD03220KB00MP00 WIMA	CAP FILM 0.22UF 20% 100VDC 1812	319
MKS2C021501A00MSSD WIMA	CAP FILM 0.015UF 20% 63VDC RAD	4947
MKP1O134706G00JSSD WIMA	CAP FILM 0.47UF 5% 1KVDC RAD	0
SMDTF02680QA00MP00 WIMA	CAP FILM 0.068UF 20% 250VDC 2220	1876
SMDID03470TB00MS00 WIMA	CAP FILM 0.47UF 20% 100VDC 2824	0
MKX14W42207G00KSSD WIMA	CAP FILM 2.2UF 10% 440VAC RADIAL	126
MKP1T034707F00KSSD WIMA	CAP FILM 0.47UF 10% 1.6KVDC RAD	477
FKS3J011003A00KSSD WIMA	CAP FILM 1000PF 10% 630VDC RAD	12725
FKP2C001501D00JSSD WIMA	CAP FILM 150PF 5% 63VDC RAD	13069
FKP2F016801I00HSSD WIMA	CAP FILM 6800PF 2.5% 250VDC RAD	3840
FKP3C031004C00JSSD WIMA	CAP FILM 0.1UF 5% 63VDC RAD	1746
MKP1F031505B00JSC9 WIMA	CAP FILM 0.15UF 5% 250VDC RAD	358
FKP2G011001D00KSSD WIMA	CAP FILM 1000PF 10% 400VDC RAD	8249
FKP3J022204J00JSSD WIMA	CAP FILM 0.022UF 5% 630VDC RAD	403
MKP2J011001B00JSSD WIMA	CAP FILM 1000PF 5% 630VDC RAD	6614
FKP0D001000B00JSSD WIMA	CAP FILM 100PF 5% 100VDC RAD	1860
SMDTD02330KA00MP00 WIMA	CAP FILM 0.033UF 20% 100VDC 1812	4073
MKS2D041501M00KSSD WIMA	CAP FILM 1.5UF 10% 100VDC RAD	1963
DCP4I051006GD2KSSD WIMA	CAP FILM 10UF 10% 600VDC RADIAL	142
MKP1G036805I00KSSD WIMA	CAP FILM 0.68UF 10% 400VDC RAD	1115

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.