Film Capacitors

Part Number	Description / PDF	Quantity
FKP3G021504C00JSSD WIMA	CAP FILM 0.015UF 5% 400VDC RAD	1750
MKS2D031501C00KSSD WIMA	CAP FILM 0.15UF 10% 100VDC RAD	10687
FKS2F021001B00KSSD WIMA	CAP FILM 10000PF 10% 250VDC RAD	19556
MKS4C024702A00JSSD WIMA	CAP FILM 0.047UF 5% 63VDC RAD	3185
FKP2D014701G00JSSD WIMA	CAP FILM 4700PF 5% 100VDC RAD	7962
FKP2C001501D00KSSD WIMA	CAP FILM 150PF 10% 63VDC RAD	7014
FKP1Y014706B00JSSD WIMA	CAP FILM 4700PF 5% 6KVDC RAD	981
SMDTF03150TB00MQ00 WIMA	CAP FILM 0.15UF 20% 250VDC 2824	1958
SMDTF02470TA00MS00 WIMA	CAP FILM 0.047UF 20% 250VDC 2824	0
MKXR3W41506G00MSC9 WIMA	CAP FILM 1.5UF 20% 400VAC RAD	274
FKP2C023301L00HSSD WIMA	CAP FILM 0.033UF 2.5% 63VDC RAD	2234
FKP4O122204F00JSSD WIMA	CAP FILM 0.022UF 5% 1KVDC RAD	1868
SMDTD03220KB00MS00 WIMA	CAP FILM 0.22UF 20% 100VDC 1812	0
FKP3G021004B00JSSD WIMA	CAP FILM 10000PF 5% 400VDC RAD	690
MKP1J034706B00KSSD WIMA	CAP FILM 0.47UF 10% 630VDC RAD	0
FKS3J012203A00KSSD WIMA	CAP FILM 2200PF 10% 630VDC RAD	2639
FKP1T021005H00MSSD WIMA	CAP FILM 10000PF 20% 1.6KVDC RAD	2
SMDIC03330QB00MS00 WIMA	CAP FILM 0.33UF 20% 63VDC 2220	0
FKP1U021006B00MSC9 WIMA	CAP FILM 10000PF 20% 2KVDC RAD	1240
FKP1X014706B00JSSD WIMA	CAP FILM 4700PF 5% 4KVDC RADIAL	786

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.