Film Capacitors

Part Number	Description / PDF	Quantity
MKP1J031505F00JSSD WIMA	CAP FILM 0.15UF 5% 630VDC RAD	316
DCP4H162409JD4JSSD WIMA	CAP FILM 240UF 5% 500VDC RAD	24
MKP1U024705G00KSSD WIMA	CAP FILM 0.047UF 10% 2KVDC RAD	2157
FKP1G032206D00KSSD WIMA	CAP FILM 0.22UF 10% 400VDC RAD	165
DCP4P051007GD4KSC9 WIMA	CAP FILM 10UF 10% 1.1KVDC RADIAL	252
DCP4R254009JD4KSSD WIMA	CAP FILM 40UF 10% 1.3KVDC RADIAL	0
MKP1F041005I00JSSD WIMA	CAP FILM 1UF 5% 250VDC RAD	0
MKP4F033304C00JSSD WIMA	CAP FILM 0.33UF 5% 250VDC RAD	0
FKP1U001004B00MSSD WIMA	CAP FILM 100PF 20% 2KVDC RAD	2302
MKS2C032201B00KSSD WIMA	CAP FILM 0.22UF 10% 63VDC RAD	9448
MPX21W1220FA00MSSD WIMA	CAP FILM 2200PF 20% 275VAC RAD	3375
MPX20W2100FC00MSSD WIMA	CAP FILM 10000PF 20% 250VAC RAD	4271
MKS0F014700B00KSSD WIMA	CAP FILM 4700PF 10% 250VDC RAD	10000
MKS4D031503C00KSSD WIMA	CAP FILM 0.15UF 10% 100VDC RAD	5990
MKS0C022200B00MSSD WIMA	CAP FILM 0.022UF 20% 63VDC RAD	7326
MKP1J041006G00KSSD WIMA	CAP FILM 1UF 10% 630VDC RAD	841
FKS2D024701K00JSSD WIMA	CAP FILM 0.047UF 5% 100VDC RAD	577
SMDTC03680QB00MS00 WIMA	CAP FILM 0.68UF 20% 63VDC 2220	0
FKP1O126807B00JSSD WIMA	CAP FILM 0.068UF 5% 1KVDC RAD	50
MKP1T012203C00MSSD WIMA	CAP FILM 2200PF 20% 1.6KVDC RAD	4643

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.