Film Capacitors

Part Number	Description / PDF	Quantity
PPE220 TubeDepot	CAP FILM 2.2UF 630V SOLEN	0
CP-OD715-22-600V TubeDepot	CAP FILM .220UF 600V 715 SERIES	45
CP-EC-022-300V-BB TubeDepot	CAP FILM .022UF PPRNOIL TONE	20
PPE012 TubeDepot	CAP FILM .12UF 630V SOLEN	50
CP-OD715-47-400V TubeDepot	CAP FILM .470UF 400V 715 SERIES	5
539-150222J630BB TubeDepot	CAP FILM .0022UF 630V COUPLING	464
149756 TubeDepot	CAP FILM .022UF 630V COPPER	13
PPE010 TubeDepot	CAP FILM .10UF 630V SOLEN	29
X06-10-00.022 TubeDepot	CAP FILM .022UF 600V	5
C-ZBD022-500 TubeDepot	CAP FILM NXGN BLU MLD	9
CP-OD716-100-600V TubeDepot	CAP FILM .100UF 600V 716 SERIES	57
140197 TubeDepot	CAP FILM .1UF 630V SILVER LEAD	0
149779 TubeDepot	CAP FILM 1UF 630V SILV LEAD CPPR	2
CP-XI-0047-630V TubeDepot	CAP FILM .0047UF 630V XICON	112
140207 TubeDepot	CAP FILM .22UF 630V SILVER ALUM	0
PPE018 TubeDepot	CAP FILM .18UF 630V SOLEN	10
CP-VO-VQ-047-300V TubeDepot	CAP FILM .047UF 300V HYREL OIL	77
C-ZBD1-500 TubeDepot	CAP FILM NXGN BLU MLD	30
CP-VO-VQ-047-600V TubeDepot	CAP FILM .047UF 600V OIL	7
CP-VO-VQ-10-100V TubeDepot	CAP FILM 1.0UF 100V OIL	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.