Film Capacitors

Part Number	Description / PDF	Quantity
SMDTC03150TA00MQ00 WIMA	CAP FILM 0.15UF 20% 63VDC 2824	1500
DCP4N053007ID4KSSD WIMA	CAP FILM 30UF 10% 900VDC RADIAL	0
MKS4G033304F00KSC9 WIMA	CAP FILM 0.33UF 10% 400VDC RAD	737
MKP1G042207E00KSSD WIMA	CAP FILM 2.2UF 10% 400VDC RAD	5
FKP0C002200B00KSSD WIMA	CAP FILM 220PF 10% 63VDC RAD	19640
SMDIC03220TB00KQ00 WIMA	CAP FILM 0.22UF 10% 63VDC 2824	883
MKS2B051001N00JSSD WIMA	CAP FILM 10UF 5% 50VDC RAD	0
SMDTC03150TA00KS00 WIMA	CAP FILM 0.15UF 10% 63VDC 2824	0
MPX12W1100FA00MSSD WIMA	CAP FILM 1000PF 20% 300VAC RAD	959
SMDTD02470QA00MP00 WIMA	CAP FILM 0.047UF 20% 100VDC 2220	2231
MKS0C021000B00JSSD WIMA	CAP FILM 10000PF 5% 63VDC RAD	3645
FKP2J016801J00MSC9 WIMA	CAP FILM 6800PF 20% 630VDC RAD	1300
SMDTF03220TB00MQ00 WIMA	CAP FILM 0.22UF 20% 250VDC 2824	2999
MKP4G033304F00KSSD WIMA	CAP FILM 0.33UF 10% 400VDC RAD	393
SMDTD02330QA00MP00 WIMA	CAP FILM 0.033UF 20% 100VDC 2220	170
MKP2J021501F00KSSD WIMA	CAP FILM 0.015UF 10% 630VDC RAD	6122
FKP4U014705D00KSSD WIMA	CAP FILM 4700PF 10% 2KVDC RAD	326
SMDTG03220XA00MS00 WIMA	CAP FILM 0.22UF 20% 400VDC 5040	0
FKP1T022206B00JSSD WIMA	CAP FILM 0.022UF 5% 1.6KVDC RAD	1234
FKP1J032207D00JSC9 WIMA	CAP FILM 0.22UF 5% 630VDC RAD	547

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.