Film Capacitors

Part Number	Description / PDF	Quantity
C44PLGR6400RASJ KEMET	CAP FILM 400UF 5% 700VDC RADIAL	10
R75TN256050H3J KEMET	CAP FILM 0.056UF 5% 1.6KVDC RAD	550
F863RR685K310Z KEMET	CAP FILM 6.8UF 10% 310VAC RADIAL	53
C4AQQBW5240M3MJ KEMET	CAP FILM 24UF 5% 1.1KVDC RADIAL	0
C4AF7BU4330A12K KEMET	CAP FILM 3.3UF 10% 700VDC RADIAL	6
R71VF31504030K KEMET	CAP FILM 0.15UF 10% 520VDC RAD	3391
F861BZ105M310A KEMET	CAP FILM 1UF 20% 630VDC RADIAL	0
PHE840MB5470KB04R17 KEMET	CAP FILM 0.047UF 10% 760VDC RAD	3632
C44UQGT6700M52K KEMET	CAP FILM 700UF 10% 1.1KVDC RAD	8
R82EC3100Z370J KEMET	CAP FILM 0.1UF 5% 100VDC RADIAL	43210
C4AFBBW4330T3LK KEMET	FILM, RADIAL, POWER BOX, AC FILT	0
R76TI1330SE30J KEMET	CAP FILM 3300PF 5% 1.6KVDC RAD	1789
R46KI333040P1K KEMET	CAP FILM 0.33UF 10% 560VDC RAD	520
R76UI21004040J KEMET	CAP FILM 10000PF 5% 2KVDC RADIAL	4077
F862FI155K310ZV054 KEMET	CAP FILM 1.5UF 10% 630VDC RADIAL	500
R60MI3680AA40K KEMET	CAP FILM 0.68UF 10% 400VDC RAD	61
PHE426DJ5330FR17T0 KEMET	CAP FILM 0.033UF 1% 100VDC RAD	1867
R75MI3100AA30J KEMET	CAP FILM 0.1UF 5% 400VDC RADIAL	662
R46KR422000M2M KEMET	CAP FILM 2.2UF 20% 560VDC RADIAL	0
R463N333050M1K KEMET	CAP FILM 0.33UF 10% 630VDC RAD	453

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.