Film Capacitors

Part Number	Description / PDF	Quantity
C878HF44500SD4J KEMET	CAP FILM 5UF 5% 470VAC RADIAL	0
R475N31005001K KEMET	CAP FILM 0.1UF 10% 1KVDC RADIAL	400
PFR5472H63J11L4BULK KEMET	CAP FILM 4700PF 5% 63VDC RADIAL	1494
MMK5222K63J01L4BULK KEMET	CAP FILM 2200PF 10% 63VDC RADIAL	4
R82MC2150DQ50J KEMET	CAP FILM 0.015UF 5% 400VDC RAD	1900
R533N356050P1M KEMET	CAP FILM 0.56UF 20% 630VDC RAD	0
LDECD4100MA0N00 KEMET	CAP FILM 1UF 20% 50VDC 2220	0
SMR5473J50J01L16.5CBULK KEMET	CAP FILM 0.047UF 5% 50VDC RADIAL	248
PHE450MB5470JR06 KEMET	CAP FILM 0.047UF 5% 630VDC RAD	3974
R75MR433050H3J KEMET	CAP FILM 3.3UF 5% 400VDC RADIAL	128
R75PF1470AA01J KEMET	CAP FILM 4700PF 5% 630VDC RADIAL	1618
R60MN41004040K KEMET	CAP FILM 1UF 10% 400VDC RADIAL	273
C4AEGBU4680A1XJ KEMET	CAP FILM 6.8UF 5% 450VDC RADIAL	0
F862BK154K310ZV054 KEMET	CAP FILM 0.15UF 10% 630VDC RAD	448
R73PI22204000J KEMET	CAP FILM 0.022UF 5% 630VDC RAD	30
C276CCF5400LG0J KEMET	CAP FILM 40UF 5% 470VAC RADIAL	0
R46KF310000M1K KEMET	CAP FILM 0.1UF 10% 560VDC RADIAL	397
R413F12200000M KEMET	CAP FILM 2200PF 20% 1KVDC RADIAL	23378
C4AF1EW5470A3AK KEMET	CAP FILM 47UF 10% 500VDC RADIAL	21
R76QF14704030J KEMET	CAP FILM 4700PF 5% 1KVDC RADIAL	242

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.