Film Capacitors

Part Number	Description / PDF	Quantity
SMDIJ02470XA00KT00 WIMA	CAP FILM 0.047UF 10% 630VDC 5040	1195
SMDTC03150TA00MS00 WIMA	CAP FILM 0.15UF 20% 63VDC 2824	0
FKP1T016805F00MSSD WIMA	CAP FILM 6800PF 20% 1.6KVDC RAD	420
MKP4G042206F00KSSD WIMA	CAP FILM 2.2UF 10% 400VDC RAD	0
MKP4F043306D00MSSD WIMA	CAP FILM 3.3UF 20% 250VDC RAD	89
MKP2F023301B00JSSD WIMA	CAP FILM 0.033UF 5% 250VDC RAD	3810
MKS2C021001A00MSSD WIMA	CAP FILM 10000PF 20% 63VDC RAD	2100
FKP2C021501I00KSSD WIMA	CAP FILM 0.015UF 10% 63VDC RAD	2267
MKP1V016804D00KSSD WIMA	CAP FILM 6800PF 10% 2.5KVDC RAD	517
MKP1F044706J00JSSD WIMA	CAP FILM 4.7UF 5% 250VDC RAD	199
FKS3F021003A00KSSD WIMA	CAP FILM 10000PF 10% 250VDC RAD	5748
MKS0C021500B00MSSD WIMA	CAP FILM 0.015UF 20% 63VDC RAD	24168
MKP1T031006B00KSSD WIMA	CAP FILM 0.1UF 10% 1.6KVDC RAD	0
MKS2D036801F00KSSD WIMA	CAP FILM 0.68UF 10% 100VDC RAD	0
FKP2D003301D00KSC4 WIMA	CAP FILM 330PF 10% 100VDC RAD	4249
FKP1T013305B00MSSD WIMA	CAP FILM 3300PF 20% 1.6KVDC RAD	585
MKP4F031003C00KSSD WIMA	CAP FILM 0.1UF 10% 250VDC RAD	952
FKP1T012205A00MSSD WIMA	CAP FILM 2200PF 20% 1.6KVDC RAD	1294
SMDTO12470YA00KS00 WIMA	CAP FILM 0.047UF 10% 1KVDC 6054	0
SMDTC03220TA00MS00 WIMA	CAP FILM 0.22UF 20% 63VDC 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.