Film Capacitors

Part Number	Description / PDF	Quantity
R413F11004000K KEMET	CAP FILM 1000PF 10% 1KVDC RADIAL	0
R46KR422000P0M KEMET	CAP FILM 2.2UF 20% 560VDC RADIAL	478
R474I310050A1KV057 KEMET	CAP FILM 0.1UF 10% 1KVDC RADIAL	0
R82EC2150AA50J KEMET	CAP FILM 0.015UF 5% 100VDC RAD	70466
C4AQLLW5360A36K KEMET	CAP FILM 36UF 10% 500VDC RADIAL	0
C44UUGT6950M54K KEMET	CAP FILM 950UF 10% 1.3KVDC RAD	0
F612JQ473K400L KEMET	CAP FILM 0.047UF 10% 400VDC RAD	2400
R413I222050T0K KEMET	CAP FILM 0.022UF 10% 1.5KVDC RAD	2028
PME295RB4100MR30 KEMET	CAP FILM 1000PF 20% 480VAC RAD	6745
R76PI26804030J KEMET	CAP FILM 0.068UF 5% 630VDC RAD	480
R60MI31004030K KEMET	CAP FILM 0.1UF 10% 400VDC RADIAL	844
R523I382050P0M KEMET	CAP FILM 0.82UF 20% 630VDC RAD	315
R413I233000M1K KEMET	CAP FILM 0.033UF 10% 1KVDC RAD	1236
R60DN51504030J KEMET	CAP FILM 15UF 5% 63VDC RADIAL	0
R75TR356050H3J KEMET	CAP FILM 0.56UF 5% 1.6KVDC RAD	100
LDECC3100JA5N00 KEMET	CAP FILM 0.1UF 5% 50VDC 1812	2796
C878AF24250AA1J KEMET	CAP FILM 2.5UF 5% 470VAC RADIAL	0
PFR5151J63J11L4BULK KEMET	CAP FILM 150PF 5% 63VDC RADIAL	930
R533I315050P0K KEMET	CAP FILM 0.15UF 10% 630VDC RAD	0
R82CC4330Z330J KEMET	CAP FILM 3.3UF 5% 50VDC RAD	1794

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.