Film Capacitors

Part Number	Description / PDF	Quantity
FKP1U006804C00JSSD WIMA	CAP FILM 680PF 5% 2KVDC RAD	65
FKP2J012201G00JSSD WIMA	CAP FILM 2200PF 5% 630VDC RAD	74
FKP1U002204B00MSSD WIMA	CAP FILM 220PF 20% 2KVDC RAD	6663
FKP1T022206B00MSSD WIMA	CAP FILM 0.022UF 20% 1.6KVDC RAD	629
SMDNC03220QA00KP00 WIMA	CAP FILM 0.22UF 10% 63VDC 2220	485
MKP4O136806G00JSSD WIMA	CAP FILM 0.68UF 5% 1KVDC RAD	586
MKS4F043306B00MSSD WIMA	CAP FILM 3.3UF 20% 250VDC RAD	408
SMDID02100KA00MS00 WIMA	CAP FILM 10000PF 20% 100VDC 1812	0
MKP1T023304F00KSSD WIMA	CAP FILM 0.033UF 10% 1.6KVDC RAD	226
FKP1T006804B00JSC9 WIMA	CAP FILM 680PF 5% 1.6KVDC RADIAL	2108
FKP0D001500B00KSSD WIMA	CAP FILM 150PF 10% 100VDC RAD	19936
SMDTD03100TA00KQ00 WIMA	CAP FILM 0.1UF 10% 100VDC 2824	80
MKX2AW28204B00KSSD WIMA	CAP FILM 0.082UF 10% 630VDC RAD	0
MKP1T024706A00JSSD WIMA	CAP FILM 0.047UF 5% 1.6KVDC RAD	2564
FKP1U014705F00KSSD WIMA	CAP FILM 4700PF 10% 2KVDC RAD	3014
DCP4G061007ID4KSSD WIMA	CAP FILM 100UF 10% 400VDC RADIAL	216
MKP2G012201B00MSSD WIMA	CAP FILM 2200PF 20% 400VDC RAD	1222
MKPCJ042205I00KSC9 WIMA	CAP FILM 2.2UF 10% 630VDC RAD	226
FKP2J004701D00JSC9 WIMA	CAP FILM 470PF 5% 630VDC RAD	4716
SMDND03680TB00MS00 WIMA	CAP FILM 0.68UF 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.