Film Capacitors

Part Number	Description / PDF	Quantity
MKPFAW52009ED4KSSD WIMA	CAP FILM 20UF 10% 630VDC RADIAL	48
DCP4R251007HD4KSSD WIMA	CAP FILM 10UF 10% 1.3KVDC RADIAL	68
MKS2C022201A00KSSD WIMA	CAP FILM 0.022UF 10% 63VDC RAD	11318
MKS2C031501A00MSSD WIMA	CAP FILM 0.15UF 20% 63VDC RAD	9780
FKS2F011501A00MSSD WIMA	CAP FILM 1500PF 20% 250VDC RAD	2448
FKS2D011501A00JSSD WIMA	CAP FILM 1500PF 5% 100VDC RAD	2089
MKP1O141507H00KSSD WIMA	CAP FILM 1.5UF 10% 1KVDC RAD	169
FKS2F014701A00MSSD WIMA	CAP FILM 4700PF 20% 250VDC RAD	19887
DCP4N047006ID2KSC9 WIMA	CAP FILM 7UF 10% 900VDC RAD	76
DCP4P045006ID2KSSD WIMA	CAP FILM 5UF 10% 1.1KVDC RADIAL	223
MKS2G021001A00JSSD WIMA	CAP FILM 10000PF 5% 400VDC RAD	13245
MKS4F031502E00KSSD WIMA	CAP FILM 0.15UF 10% 250VDC RAD	1139
MKS4B041502E00MSSD WIMA	CAP FILM 1.5UF 20% 50VDC RAD	3699
SMDIC02100KA00MS00 WIMA	CAP FILM 10000PF 20% 63VDC 1812	0
MKS2C031501A00KSSD WIMA	CAP FILM 0.15UF 10% 63VDC RAD	4764
MKP4G042206F00MSSD WIMA	CAP FILM 2.2UF 20% 400VDC RAD	1246
FKS2D014701A00KSSD WIMA	CAP FILM 4700PF 10% 100VDC RAD	6013
SMDID02220KA00MS00 WIMA	CAP FILM 0.022UF 20% 100VDC 1812	0
MKP1F043306I00KSSD WIMA	CAP FILM 3.3UF 10% 250VDC RAD	91
FKS2D022201E00KSSD WIMA	CAP FILM 0.022UF 10% 100VDC RAD	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.