Film Capacitors

Part Number	Description / PDF	Quantity
MKP1F041006B00KSSD WIMA	CAP FILM 1UF 10% 250VDC RAD	0
MKS2F022201A00KSSD WIMA	CAP FILM 0.022UF 10% 250VDC RAD	8166
SMDTD02330KA00MS00 WIMA	CAP FILM 0.033UF 20% 100VDC 1812	0
FKP1Y011505D00MSSD WIMA	CAP FILM 1500PF 20% 6KVDC RAD	429
MKP1F022203C00MSSD WIMA	CAP FILM 0.022UF 20% 250VDC RAD	1573
FKP1Y013305H00KSC9 WIMA	CAP FILM 3300PF 10% 6KVDC RAD	1410
MKP1J014702C00MSSD WIMA	CAP FILM 4700PF 20% 630VDC RAD	741
MKP2J011001B00KSSD WIMA	CAP FILM 1000PF 10% 630VDC RAD	11239
FKP1R013304C00MSSD WIMA	CAP FILM 3300PF 20% 1.25KVDC RAD	3435
MKP1U026805I00KSSD WIMA	CAP FILM 0.068UF 10% 2KVDC RAD	808
FKP1X021006F00KSSD WIMA	CAP FILM 10000PF 10% 4KVDC RAD	974
FKP2O100331D00KSSD WIMA	CAP FILM 33PF 10% 1KVDC RAD	11582
MKP4G043306G00JSSD WIMA	CAP FILM 3.3UF 5% 400VDC RAD	282
SMDNC03680TB00MQ00 WIMA	CAP FILM 0.68UF 20% 63VDC 2824	1500
MKXR3W31504J00KSC9 WIMA	CAP FILM 0.15UF 10% 400VAC RAD	804
SMDID03470TB00MQ00 WIMA	CAP FILM 0.47UF 20% 100VDC 2824	1812
MKS2C023301A00MSSD WIMA	CAP FILM 0.033UF 20% 63VDC RAD	2299
SMDIC03100KA00MP00 WIMA	CAP FILM 0.1UF 20% 63VDC 1812	10242
FKP2J003301D00HSSD WIMA	CAP FILM 330PF 2.5% 630VDC RAD	8103
FKP2O102201D00JSSD WIMA	CAP FILM 220PF 5% 1KVDC RAD	6871

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.