Film Capacitors

Part Number	Description / PDF	Quantity
LDECA1100JA0N00 KEMET	CAP FILM 1000PF 5% 50VDC 1206	2150
R82EC2680AA60K KEMET	CAP FILM 0.068UF 10% 100VDC RAD	3000
F611DY226K100ZLH0J KEMET	CAP FILM 22UF 10% 100VDC RADIAL	222
R46KI310040H1M KEMET	CAP FILM 0.1UF 20% 560VDC RADIAL	3102
R46KF215040H1M KEMET	CAP FILM 0.015UF 20% 560VDC RAD	1834
R82EC4100DQ70K KEMET	CAP FILM 1UF 10% 100VDC RAD	0
R79PC1100AA40J KEMET	CAP FILM 1000PF 5% 630VDC RADIAL	909
R413N32204000M KEMET	CAP FILM 0.22UF 20% 1KVDC RADIAL	0
PFR5101J250J11L4BULK KEMET	CAP FILM 100PF 5% 250VDC RADIAL	2234
PHE450RD5220JR06L2 KEMET	CAP FILM 0.022UF 5% 1.6KVDC RAD	34
R75MN3470AA30J KEMET	CAP FILM 0.47UF 5% 400VDC RADIAL	245
C4AQPBW5130M3LJ KEMET	CAP FILM 13UF 5% 1.2KVDC RADIAL	0
R66DD3470AA6AJ KEMET	CAP FILM 0.47UF 5% 63VDC RADIAL	1496
PHE840MY6470MD14R06L2 KEMET	CAP FILM 0.47UF 20% 760VDC RAD	3114
R73UI11004000J KEMET	CAP FILM 1000PF 5% 2KVDC RADIAL	1765
R82EC1330JE50J KEMET	CAP FILM 3300PF 5% 100VDC RADIAL	5738
R413N310040M1K KEMET	CAP FILM 0.1UF 10% 1KVDC RADIAL	0
R463R422000M1K KEMET	CAP FILM 2.2UF 10% 630VDC RADIAL	1056
C4GAMUD4250AA1J KEMET	CAP FILM 2.5UF 5% 850VDC AXIAL	0
R533R447050P1M KEMET	CAP FILM 4.7UF 20% 630VDC RADIAL	0

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.