Film Capacitors

Part Number	Description / PDF	Quantity
FKP2O106801G00JSSD WIMA	CAP FILM 680PF 5% 1KVDC RAD	1816
SMDTF03220TB00KS00 WIMA	CAP FILM 0.22UF 10% 250VDC 2824	0
SMDTD03150TA00MS00 WIMA	CAP FILM 0.15UF 20% 100VDC 2824	0
MKP1V011504B00KSSD WIMA	CAP FILM 1500PF 10% 2.5KVDC RAD	990
FKP1T006804B00KSSD WIMA	CAP FILM 680PF 10% 1.6KVDC RAD	2009
SMDIC03100KA00MS00 WIMA	CAP FILM 0.1UF 20% 63VDC 1812	0
MKP1O131005F00KSC9 WIMA	CAP FILM 0.1UF 10% 1KVDC RAD	0
SMDNC03680TB00KQ00 WIMA	CAP FILM 0.68UF 10% 63VDC 2824	245
MKX14W41006G00KSSD WIMA	CAP FILM 1UF 10% 440VAC RADIAL	0
MKP1W036807J00KSSD WIMA	CAP FILM 0.68UF 10% 3KVDC RADIAL	26
MKS4O111503C00KSSD WIMA	CAP FILM 1500PF 10% 1KVDC RAD	1207
FKP3J021504F00JSSD WIMA	CAP FILM 0.015UF 5% 630VDC RAD	657
FKP1O132207F00MSSD WIMA	CAP FILM 0.22UF 20% 1KVDC RAD	1121
FKP1U001504B00KSSD WIMA	CAP FILM 150PF 10% 2KVDC RAD	2583
FKP2D006801D00KSSD WIMA	CAP FILM 680PF 10% 100VDC RAD	11766
MKY22W31005D00KSSD WIMA	CAP FILM 0.1UF 10% 300VAC RAD	1490
SMDID03100QA00MS00 WIMA	CAP FILM 0.1UF 20% 100VDC 2220	0
FKP1T004704B00MSSD WIMA	CAP FILM 470PF 20% 1.6KVDC RAD	4412
SMDTD02100KA00MP00 WIMA	CAP FILM 10000PF 20% 100VDC 1812	2063
SMDTD04100TB00MS00 WIMA	CAP FILM 1UF 20% 100VDC 2824	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.