Film Capacitors

Part Number	Description / PDF	Quantity
R76UI14704040J KEMET	CAP FILM 4700PF 5% 2KVDC RADIAL	847
PHE448SB3270JR06 KEMET	CAP FILM 270PF 5% 2KVDC RADIAL	990
R82EC1470DQ50K KEMET	CAP FILM 4700PF 10% 100VDC RAD	3264
R73TR2470SE00K KEMET	CAP FILM 0.047UF 10% 1.6KVDC RAD	479
R474F182050A1KV057 KEMET	CAP FILM 8200PF 10% 1KVDC RADIAL	0
C4AQQBU4500A11J KEMET	CAP FILM 5UF 5% 1.1KVDC RADIAL	328
C44AHGP5600ZB0J KEMET	CAP FILM 60UF 5% 600VDC RADIAL	112
C4AQCBU4700A1YJ KEMET	CAP FILM 7UF 5% 650VDC RADIAL	42
PHE450RD5100JR06L2 KEMET	CAP FILM 10000PF 5% 1.6KVDC RAD	1742
R75QI2220AA00J KEMET	CAP FILM 0.022UF 5% 1KVDC RADIAL	31
R60DN46805030J KEMET	CAP FILM 6.8UF 5% 63VDC RADIAL	498
R76TI156050H4J KEMET	CAP FILM 5600PF 5% 1.6KVDC RAD	1490
R60PR4100AA50K KEMET	CAP FILM 1UF 10% 630VDC RAD	295
R73UN1330SE00K KEMET	CAP FILM 3000PF 10% 2KVDC RADIAL	648
C4AQSEW5400A3BJ KEMET	CAP FILM 40UF 5% 1.5KVDC RAD	8
C4AQLLU4560A11K KEMET	CAP FILM 5.6UF 10% 500VDC RADIAL	188
P295BL272M500A KEMET	CAP FILM 2700PF 20% 500VAC RAD	1477
MMK5223J63J01L16.5TA18 KEMET	CAP FILM 0.022UF 5% 63VDC RADIAL	0
R60EW61005000K KEMET	CAP FILM 100UF 10% 100VDC RADIAL	30
R46KI310000M1M KEMET	CAP FILM 0.1UF 20% 560VDC RADIAL	40

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.