Film Capacitors

Part Number	Description / PDF	Quantity
LDEPD1220KA5N00 KEMET	CAP FILM 2200PF 10% 630VDC 2220	3014
R76TN282050H4J KEMET	CAP FILM 0.08UF 5% 1.6KVDC RAD	276
PHE426KF7150JR06L2 KEMET	CAP FILM 1.5UF 5% 400VDC RADIAL	0
PHE840MF7150MF13R06L2 KEMET	CAP FILM 1.5UF 20% 760VDC RAD	0
PHE426KA5330JR05 KEMET	CAP FILM 0.033UF 5% 400VDC RAD	0
C4BSPBX4200ZAMJ KEMET	CAP FILM 2UF 5% 1.2KVDC SCREW	2
R75PN31004030J KEMET	CAP FILM 0.1UF 5% 630VDC RADIAL	336
MMK5333J100J01L16.5TA18 KEMET	CAP FILM 0.033UF 5% 100VDC RAD	0
PHE426HJ5100JR05 KEMET	CAP FILM 10000PF 5% 250VDC RAD	1928
R60GI41504030K KEMET	CAP FILM 1.5UF 10% 160VDC RADIAL	429
R75TI156050H3J KEMET	CAP FILM 5600PF 5% 1.6KVDC RAD	946
R463N347040M1M KEMET	CAP FILM 0.47UF 20% 630VDC RAD	295
R75IN41504040J KEMET	CAP FILM 1.5UF 5% 250VDC RADIAL	234
F161YR155M100V KEMET	CAP FILM 1.5UF 20% 100VDC SMD	0
LDECD3560KA5N00 KEMET	CAP FILM 0.56UF 10% 50VDC 2220	0
R75PI31504030K KEMET	CAP FILM 0.15UF 10% 630VDC RAD	486
R73TW3100SE00K KEMET	CAP FILM 0.1UF 10% 1.6KVDC RAD	71
R413I2100JH00M KEMET	CAP FILM 10000PF 20% 1KVDC RAD	1573
PHE450PR6470JR06L2 KEMET	CAP FILM 0.47UF 5% 1KVDC RADIAL	260
R60MR42205040J KEMET	CAP FILM 2.2UF 5% 400VDC RADIAL	1944

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.