Film Capacitors

Part Number	Description / PDF	Quantity
FKP1U016805H00KSSD WIMA	CAP FILM 6800PF 10% 2KVDC RAD	0
MKP4J044707G00MSSD WIMA	CAP FILM 4.7UF 20% 630VDC RAD	221
FKP2D022201L00JSSD WIMA	CAP FILM 0.022UF 5% 100VDC RAD	4462
FKP1Y031007J00KSSD WIMA	CAP FILM 0.1UF 10% 6KVDC RADIAL	48
DCP4H161309FD4JSSD WIMA	CAP FILM 130UF 5% 500VDC RAD	0
FKP0D014700E00KSSD WIMA	CAP FILM 4700PF 10% 100VDC RAD	16508
MKP4G043306G00KSSD WIMA	CAP FILM 3.3UF 10% 400VDC RAD	542
MKP2J011001B00MSSD WIMA	CAP FILM 1000PF 20% 630VDC RAD	16050
MKP1G036806B00KSSD WIMA	CAP FILM 0.68UF 10% 400VDC RAD	61
SMDNC03680TB00MS00 WIMA	CAP FILM 0.68UF 20% 63VDC 2824	0
MKX2AW18202C00KSSD WIMA	CAP FILM 8200PF 10% 630VDC RAD	1733
MKP4O132205I00KSSD WIMA	CAP FILM 0.22UF 10% 1KVDC RAD	4164
DCP4H161007JD4KSSD WIMA	CAP FILM 100UF 10% 500VDC RADIAL	33
MKS4J031005B00MSSD WIMA	CAP FILM 0.1UF 20% 630VDC RAD	318
FKP1T014705D00KSSD WIMA	CAP FILM 4700PF 10% 1.6KVDC RAD	0
SMDID02470QA00KS00 WIMA	CAP FILM 0.047UF 10% 100VDC 2220	0
MKP2D031501H00KSSD WIMA	CAP FILM 0.015UF 10% 100VDC RAD	3330
MKP1F041006B00MSSD WIMA	CAP FILM 1UF 20% 250VDC RAD	533
MKX2AW41006D00MSSD WIMA	CAP FILM 1UF 20% 630VDC RAD	0
FKP4O121504D00JSSD WIMA	CAP FILM 0.015UF 5% 1KVDC RAD	248

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.