Film Capacitors

Part Number	Description / PDF	Quantity
EZP-V80256MTS Panasonic	CAP FILM 25UF 10% 800V RADIAL	150
ECW-FA2J154J4 Panasonic	CAP FILM 0.15UF 5% 630VDC RADIAL	0
ECW-FE2J105PD Panasonic	CAP FILM 1UF 5% 630VDC RADIAL	788
EZP-V80356MTB Panasonic	CAP FILM 35UF 10% 800V RADIAL	100
ECW-FE2W105K Panasonic	CAP FILM 1UF 10% 450VDC RADIAL	0
ECH-U1563GC9 Panasonic	CAP FILM 0.056UF 2% 100VDC 2416	2403
ECW-FD2W824K4 Panasonic	CAP FILM 0.82UF 10% 450VDC RAD	546
ECH-U1C563JB5 Panasonic	CAP FILM 0.056UF 5% 16VDC 1210	24619
ECQ-UBAF152M Panasonic	CAP FILM 0.0015UF 20% 300VAC RAD	2000
ECW-HC3F562J Panasonic	CAP FILM 5600PF 5% 3KVDC RADIAL	569
ECH-U1223GC9 Panasonic	CAP FILM 0.022UF 2% 100VDC 1913	5127
EZP-Q38805LTC Panasonic	CAP FILM 8UF 5% 380VAC RADIAL	93
ECQ-UBAF182V5 Panasonic	CAP FILM 0.0018UF 10% 300VAC RAD	1000
ECQ-E6125JFW Panasonic	CAP FILM 1.2UF 5% 630VDC RADIAL	0
ECW-F4115JL Panasonic	CAP FILM 1.1UF 5% 400VDC RADIAL	979
ECQ-UAAF185KA Panasonic	CAP FILM 1.8UF 10% 275VAC RADIAL	0
ECQ-UAAF334M Panasonic	CAP FILM 0.33UF 20% 275VAC RAD	1909
ECQ-UAAV274S1 Panasonic	CAP FILM 0.27UF 20% 310VAC RAD	0
ECW-F6134JL Panasonic	CAP FILM 0.13UF 5% 630VDC RADIAL	535
ECQ-E6155JF Panasonic	CAP FILM 1.5UF 5% 630VDC RADIAL	587

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.