Film Capacitors

Part Number	Description / PDF	Quantity
DCP4R251007HD2JSSD WIMA	CAP FILM 10UF 5% 1.3KVDC RADIAL	126
MKP1T032206F00JSSD WIMA	CAP FILM 0.22UF 5% 1.6KVDC RAD	0
FKS2F014701A00KSSD WIMA	CAP FILM 4700PF 10% 250VDC RAD	10780
MKX2AW25603H00KSSD WIMA	CAP FILM 0.056UF 10% 630VDC RAD	1818
MKP1U032206I00KSSD WIMA	CAP FILM 0.22UF 10% 2KVDC RAD	163
FKP0D012200C00KSSD WIMA	CAP FILM 2200PF 10% 100VDC RAD	9523
FKP1Y021006F00MSSD WIMA	CAP FILM 10000PF 20% 6KVDC RAD	393
FKS2F013301A00MSSD WIMA	CAP FILM 3300PF 20% 250VDC RAD	1694
MKP4D046806F00JSSD WIMA	CAP FILM 6.8UF 5% 100VDC RAD	634
MKP1O133306F00KSSD WIMA	CAP FILM 0.33UF 10% 1KVDC RAD	654
FKP1Y012205H00KSSD WIMA	CAP FILM 2200PF 10% 6KVDC RADIAL	581
MKP1T032206F00KSSD WIMA	CAP FILM 0.22UF 10% 1.6KVDC RAD	702
MKP4O142207H00MSSD WIMA	CAP FILM 2.2UF 20% 1KVDC RAD	0
MKPFBW52009ED4KSSD WIMA	CAP FILM 20UF 10% 700VDC RADIAL	37
MPX12W3100FI00MSSD WIMA	CAP FILM 0.1UF 20% 300VAC RAD	23
MKS4B051004J00KSSD WIMA	CAP FILM 10UF 10% 50VDC RAD	0
FKS2F013301A00KSSD WIMA	CAP FILM 3300PF 10% 250VDC RAD	19942
MKS4J041506F00MSSD WIMA	CAP FILM 1.5UF 20% 630VDC RAD	101
MKP1W041007K00KSSD WIMA	CAP FILM 1UF 10% 3KVDC RADIAL	91
DCP4L052507HD4KSSD WIMA	CAP FILM 25UF 10% 800VDC RAD	40

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.