Film Capacitors

Part Number	Description / PDF	Quantity
F161ST105K050V KEMET	CAP FILM 1UF 10% 50VDC 2824	924
C44PLGR6600RASJ KEMET	CAP FILM 600UF 5% 700VDC RAD	5
PME271Y510MR19T0 KEMET	CAP FILM 10000PF 20% 1KVDC RAD	269
C276CCF5160LG0J KEMET	CAP FILM 16UF 5% 470VAC RADIAL	0
C4AQUBW4800A3FJ KEMET	CAP FILM 8UF 5% 1.3KVDC RADIAL	0
C4GADUB4100AA4J KEMET	CAP FILM 1UF 5% 250VDC AXIAL	0
F463DO333J2K0Z KEMET	CAP FILM 0.033UF 5% 2KVDC RADIAL	386
C4AQOLU4600M19J KEMET	CAP FILM 6UF 5% 900VDC RADIAL	0
C4AQQBU4440M1EJ KEMET	CAP FILM 4.4UF 5% 1.1KVDC RADIAL	0
R60PN3680AA40K KEMET	CAP FILM 0.68UF 10% 630VDC RAD	0
R76QF21005050J KEMET	FILM, RADIAL, PULSE, DOUBLE META	0
C4ATDBU4330A30J KEMET	CAP FILM 3.3UF 5% 250VDC RADIAL	204
LDEDE4150KA0N00 KEMET	CAP FILM 1.5UF 10% 63VDC 2824	16508
F862DO564K310ZV054 KEMET	CAP FILM 0.56UF 10% 630VDC RAD	1086
C4AQUBW5120A3LJ KEMET	CAP FILM 12UF 5% 1.3KVDC RADIAL	207
R463R422000M2K KEMET	CAP FILM 2.2UF 10% 630VDC RAD	0
R533N368050P0K KEMET	CAP FILM 0.68UF 10% 630VDC RAD	0
PME271MD6220KR30 KEMET	CAP FILM 0.22UF 10% 630VDC RAD	13
R413N315050T1K KEMET	CAP FILM 0.15UF 10% 1.5KVDC RAD	940
C4AQLEW6170A3AK KEMET	CAP FILM 170UF 10% 500VDC RADIAL	36

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.