Film Capacitors

Part Number	Description / PDF	Quantity
R76QI31005050J KEMET	FILM, RADIAL, PULSE, DOUBLE META	0
LDEQD1330KA5N00 KEMET	CAP FILM 3300PF 10% 1KVDC 2220	3375
MMK5273J63J01L16.5TR18 KEMET	CAP FILM 0.027UF 5% 63VDC RADIAL	2500
JSNEK5300KB6L0 KEMET	CAP FILM 30UF 10% 100VDC SMD	0
C276CC34300AA0J KEMET	CAP FILM 3UF 5% 470VAC RADIAL	0
C4AQIBU4500M1YJ KEMET	CAP FILM 5UF 5% 800VDC RADIAL	64
R75GI41004000J KEMET	CAP FILM 1UF 5% 160VDC RAD	983
SMP253MA4250MTR24 KEMET	CAP FILM 2500PF 20% 1.5KVDC SMD	572
C4BSTBX3470ZAFJ KEMET	CAP FILM 0.47UF 5% 1.6KVDC SCREW	33
LDECD3330JA5N00 KEMET	CAP FILM 0.33UF 5% 50VDC 2220	2716
F43MN3500ZA01K KEMET	CAP FILM 0.5UF 10% 400VDC RADIAL	262
R46KI24700001K KEMET	CAP FILM 0.047UF 10% 560VDC RAD	7343
R76MN368050H3J KEMET	CAP FILM 0.68UF 5% 400VDC RAD	378
F881BC153M300C KEMET	CAP FILM 0.015UF 20% 1KVDC RAD	1000
MMK5102M50J01L4BULK KEMET	CAP FILM 1000PF 20% 50VDC RADIAL	2000
R474N310050A1KV057 KEMET	CAP FILM 0.1UF 10% 1KVDC RADIAL	0
C4AQULU4330A19J KEMET	CAP FILM 3.3UF 5% 1.3KVDC RADIAL	80
R76QF1220SE00J KEMET	CAP FILM 2200PF 5% 1KVDC RADIAL	560
R463N410050N2M KEMET	CAP FILM 1UF 20% 630VDC RADIAL	264
R413F11500000K KEMET	CAP FILM 1500PF 10% 1KVDC RADIAL	3684

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.