Film Capacitors

Part Number	Description / PDF	Quantity
PHE840MB6470MB16R17T0 KEMET	CAP FILM 0.47UF 20% 760VDC RAD	0
C4CAYUD3150AA1J KEMET	CAP FILM 0.15UF 5% 3KVDC AXIAL	194
R60GI41004030K KEMET	CAP FILM 1UF 10% 160VDC RADIAL	700
R413I21005000K KEMET	CAP FILM 10000PF 10% 1KVDC RAD	64
R463I21005001K KEMET	CAP FILM 10000PF 10% 630VDC RAD	197
R60EF3330AA6AJ KEMET	CAP FILM 0.33UF 5% 100VDC RAD	1997
R66ID3220AA7AK KEMET	CAP FILM 0.22UF 10% 250VDC RAD	0
PFR5151J630J11L4BULK KEMET	CAP FILM 150PF 5% 630VDC RADIAL	3326
R60MI31005030K KEMET	CAP FILM 0.1UF 10% 400VDC RADIAL	7
PHE450MK5100JR05 KEMET	CAP FILM 10000PF 5% 630VDC RAD	0
R533I347050P1M KEMET	CAP FILM 0.47UF 20% 630VDC RAD	0
C44PRGR6120RASK KEMET	CAP FILM 120UF 10% 1.4KVDC RAD	4
PME271M422MR30 KEMET	CAP FILM 2200PF 20% 275VAC RAD	0
R46KI333040N0M KEMET	CAP FILM 0.33UF 20% 560VDC RAD	515
R82MC1330DQ50K KEMET	CAP FILM 3300PF 10% 400VDC RAD	3498
R76PI26805050J KEMET	FILM, RADIAL, PULSE, DOUBLE META	0
C4AQQBW5300M3NJ KEMET	CAP FILM 30UF 5% 1.1KVDC RADIAL	0
SMC5.7152J50J33TR12 KEMET	CAP FILM 1500PF 5% 50VDC 2220	0
R463R368050M1K KEMET	CAP FILM 0.68UF 10% 630VDC RAD	392
R82MC2100AA50J KEMET	CAP FILM 10000PF 5% 400VDC RAD	3

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.