Film Capacitors

Part Number	Description / PDF	Quantity
154MMR250K Cornell Dubilier Electronics	CAP FILM 0.15UF 10% 250VDC RAD	118313000
ECH-U1C271GX5 Panasonic	CAP FILM 270PF 2% 16VDC 0603	2600
R60EN46804030J KEMET	CAP FILM 6.8UF 5% 100VDC RADIAL	0
R82DC4100DQ60J KEMET	CAP FILM 1UF 5% 63VDC RADIAL	0
B32652A0153K000 TDK EPCOS	CAP FILM 0.015UF 10% 1KVDC RAD	0
474PSB122K2J Cornell Dubilier Electronics	CAP FILM 0.47UF 10% 1.2KVDC RAD	0
MMK5273J50J01L4BULK KEMET	CAP FILM 0.027UF 5% 50VDC RADIAL	1988
ECQ-E1155RJF Panasonic	CAP FILM 1.5UF 5% 100VDC RADIAL	0
F339X123333KD02W0 Vishay BC Components/Beyshlag/Draloric	CAP FILM 3300PF 10% 800VDC RAD	0
B32676E8105K000 TDK EPCOS	CAP FILM 1UF 10% 875VDC RADIAL	621
158X224K Cornell Dubilier Electronics	CAP FILM 0.22UF 10% 275VAC RAD	0
B32922C3473M189 TDK EPCOS	CAP FILM 0.047UF 20% 630VDC RAD	370
ECW-F4824JL Panasonic	CAP FILM 0.82UF 5% 400VDC RADIAL	478
C284ACA4200AL0J KEMET	CAP FILM 2UF 5% 470VAC RADIAL	7
MKT1820733015 Vishay BC Components/Beyshlag/Draloric	CAP FILM 330UF 10% 100VDC RADIAL	14
152PPB202KE Cornell Dubilier Electronics	CAP FILM 1500PF 10% 2KVDC RADIAL	0
C4AQSLW4600A36J KEMET	CAP FILM 6UF 5% 1.5KVDC RADIAL	22
184103K250RAB-F Cornell Dubilier Electronics	CAP FILM 10000PF 10% 250VDC RAD	0
MKP1848H61570KP4 Vishay BC Components/Beyshlag/Draloric	CAP FILM 15UF 10% 700VDC RADIAL	0
CMPX563K301L100B-13X11X5 Trigon Components	CMPX-X1 FILM CAP 0.056UF 10%	0

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.