Film Capacitors

Part Number	Description / PDF	Quantity
168473J63A-F Cornell Dubilier Electronics	CAP FILM 0.047UF 5% 63VDC RADIAL	0
B32916A3335M000 TDK EPCOS	CAP FILM 3.3UF 20% 760VDC RADIAL	269
MRRC440V70 NTE Electronics, Inc.	CAP FILM 70UF 6% 440VAC RADIAL	36
63MU334MB13225 Rubycon	CAP FILM 0.33UF 20% 63VDC 1210	0
BFC247026223 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.022UF 5% 100VDC RAD	0
890324025027CS Würth Elektronik Midcom	CAP FILM 0.22UF 10% 275VAC RAD	876
F17723472204 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.047UF 20% 630VDC RAD	0
ECQ-E10224JF Panasonic	CAP FILM 0.22UF 5% 1KVDC RADIAL	0
ECH-U1C393JB5 Panasonic	CAP FILM 0.039UF 5% 16VDC 1206	0
R413F147040M1K KEMET	CAP FILM 4700PF 10% 1KVDC RADIAL	0
B32021A3222K189 TDK EPCOS	CAP FILM 2200PF 10% 300VAC RAD	0
R76TF12705050J KEMET	FILM, RADIAL, PULSE, DOUBLE META	0
MKP386M468070JT5 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.68UF 5% 700VDC SCREW	0
BFC233863334 Vishay BC Components/Beyshlag/Draloric	CAP FILM 0.33UF 10% 1KVDC RADIAL	0
B32922C3334K000 TDK EPCOS	CAP FILM 0.33UF 10% 630VDC RAD	2388
MKP1848S55010JP2B Vishay BC Components/Beyshlag/Draloric	CAP FILM 5UF 5% 1KVDC RADIAL	0
ECW-F6433HL Panasonic	CAP FILM 0.043UF 3% 630VDC RAD	480
ECQ-UAAF333K Panasonic	CAP FILM 0.033UF 10% 275VAC RADI	1996
B32686A2473J000 TDK EPCOS	CAP FILM 0.047UF 5% 2KVDC RADIAL	7
C4AQNEW5550M3AJ KEMET	CAP FILM 55UF 5% 1KVDC RADIAL	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.