Film Capacitors

Part Number	Description / PDF	Quantity
R60EF4100506AK KEMET	CAP FILM 1UF 10% 100VDC RADIAL	1465
R46KF210050N0K KEMET	CAP FILM 10000PF 10% 560VDC RAD	0
MMK15225J63B05L4BULK KEMET	CAP FILM 2.2UF 5% 63VDC RAD	982
R75QR415050H0J KEMET	CAP FILM 1.5UF 5% 1KVDC RADIAL	348
R413I2220CKM1K KEMET	CAP FILM 0.022UF 10% 1KVDC RAD	1000
R60PI31005040K KEMET	CAP FILM 0.1UF 10% 630VDC RADIAL	0
R60EF3470506AK KEMET	CAP FILM 0.47UF 10% 100VDC RAD	1600
MMK5103J50J01L4BULK KEMET	CAP FILM 10000PF 5% 50VDC RADIAL	1879
MMK5225K50J04L16.5TR18 KEMET	CAP FILM 2.2UF 10% 50VDC RADIAL	0
PHE450MK5220JR06 KEMET	CAP FILM 0.022UF 5% 630VDC RAD	0
PHE845VF6100MR30L2 KEMET	CAP FILM 0.1UF 20% 1.5KVDC RAD	207
R413F14704000M KEMET	CAP FILM 4700PF 20% 1KVDC RADIAL	0
C44PUGR5680RASK KEMET	CAP FILM 68UF 10% 1.7KVDC RADIAL	2
SMR15105J100B06L16.5CBULK KEMET	CAP FILM 1UF 5% 100VDC RADIAL	1156
R73TI1100SE00K KEMET	CAP FILM 1000PF 10% 1.6KVDC RAD	2555
R75QD1100Z330J KEMET	CAP FILM 1000PF 5% 1KVDC RADIAL	53
R46KN368040P0M KEMET	CAP FILM 0.68UF 20% 560VDC RAD	232
R60GR5330AA00K KEMET	CAP FILM 33UF 10% 160VDC RADIAL	647
PHE850ER7100MR03R06L2 KEMET	CAP FILM 1UF 20% 1.25KVDC RADIAL	7422
R413I233050T0K KEMET	CAP FILM 0.033UF 10% 1.5KVDC RAD	35

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.