Film Capacitors

Part Number	Description / PDF	Quantity
MKS4J031505B00JSSD WIMA	CAP FILM 0.15UF 5% 630VDC RAD	245
MKS4O132205G00KSSD WIMA	CAP FILM 0.22UF 10% 1KVDC RAD	1
MKS4C051006B00JSSD WIMA	CAP FILM 10UF 5% 63VDC RAD	788
MKS4G052207I00KSSD WIMA	CAP FILM 22UF 10% 400VDC RAD	26
MPRY2W1150FC00MSSD WIMA	CAP FILM 1500PF 20% 300VAC RAD	0
MKP4F044706F00KSSD WIMA	CAP FILM 4.7UF 10% 250VDC RAD	800
FKP2F016801I00ESSD WIMA	CAP FILM 6800PF 1% 250VDC RAD	1220
MKS2B046801M00JSSD WIMA	CAP FILM 6.8UF 5% 50VDC RAD	3546
DCP4P051007GD4KSSD WIMA	CAP FILM 10UF 10% 1.1KVDC RADIAL	1057
FKP1Y012205H00JSSD WIMA	CAP FILM 2200PF 5% 6KVDC RAD	269
SMDTC03470QA00MS00 WIMA	CAP FILM 0.47UF 20% 63VDC 2220	0
FKP3J004702B00JSSD WIMA	CAP FILM 470PF 5% 630VDC RAD	562
MKS2F024701C00MSSD WIMA	CAP FILM 0.047UF 20% 250VDC RAD	17284
SMDTD03680XA00KT00 WIMA	CAP FILM 0.68UF 10% 100VDC 5040	450
FKP3J001502B00JSC9 WIMA	CAP FILM 150PF 5% 630VDC RAD	2346
FKP2J013301I00HSSD WIMA	CAP FILM 3300PF 2.5% 630VDC RAD	3941
FKP3D013302B00KSSD WIMA	CAP FILM 3300PF 10% 100VDC RAD	3493
MKP1W032207F00KSSD WIMA	CAP FILM 0.22UF 10% 3KVDC RADIAL	126
MKP2G011501B00MSSD WIMA	CAP FILM 1500PF 20% 400VDC RAD	9990
MKP2J016801C00KSSD WIMA	CAP FILM 6800PF 10% 630VDC RAD	2314

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.