Film Capacitors

Part Number	Description / PDF	Quantity
168102K100A-F Cornell Dubilier Electronics	CAP FILM 1000PF 10% 100VDC RAD	1273
223PSB252K2H Cornell Dubilier Electronics	CAP FILM 0.022UF 10% 2.5KVDC RAD	0
224MWR100K Cornell Dubilier Electronics	CAP FILM 0.22UF 10% 100VDC AXIAL	5334000
225P47492YD3 Cornell Dubilier Electronics	CAP FILM 0.47UF 10% 200VDC RAD	88
104MPW630K Cornell Dubilier Electronics	CAP FILM 0.1UF 10% 630VDC AXIAL	770
715P22352JD3 Cornell Dubilier Electronics	CAP FILM 0.022UF 5% 200VDC RAD	3703
947D461K112BHMSN Cornell Dubilier Electronics	CAP FILM 460UF 10% 1.1KVDC RAD	0
160473J630G-F Cornell Dubilier Electronics	CAP FILM 0.047UF 5% 630VDC RAD	0
947D521K112CGRSN Cornell Dubilier Electronics	CAP FILM 520UF 10% 1.1KVDC RAD	0
684MWR630K Cornell Dubilier Electronics	CAP FILM 0.68UF 10% 630VDC AXIAL	0
474MWR102K Cornell Dubilier Electronics	CAP FILM 0.47UF 10% 1KVDC AXIAL	0
184222J630RAB-F Cornell Dubilier Electronics	CAP FILM 2200PF 5% 630VDC RADIAL	0
947D721K102CHRSN Cornell Dubilier Electronics	CAP FILM 720UF 10% 1KVDC RADIAL	0
160393J250C-F Cornell Dubilier Electronics	CAP FILM 0.039UF 5% 250VDC RAD	0
944U660K102AAM Cornell Dubilier Electronics	CAP FILM 66UF 10% 1KVDC RADIAL	0
225P47291WD3 Cornell Dubilier Electronics	CAP FILM 4700PF 10% 100VDC RAD	209
334MMR630K Cornell Dubilier Electronics	CAP FILM 0.33UF 10% 630VDC RAD	205
474PSB152K4J Cornell Dubilier Electronics	CAP FILM 0.47UF 10% 1.5KVDC RAD	0
DME4P1K-F Cornell Dubilier Electronics	CAP FILM 0.1UF 10% 400VDC RADIAL	511500
WMF1S1K-F Cornell Dubilier Electronics	CAP FILM 10000PF 100VDC AXIAL	525

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.