Film Capacitors

Part Number	Description / PDF	Quantity
ECQ-E1185JF Panasonic	CAP FILM 1.8UF 5% 100VDC RADIAL	1194
ECQ-E2564JFB Panasonic	CAP FILM 0.56UF 5% 250VDC RADIAL	0
EZP-V60906MTC Panasonic	CAP FILM 90UF 10% 600V RADIAL	50
EZP-Q33106LTB Panasonic	CAP FILM 10UF 5% 330VAC RADIAL	100
ECW-FA2J225JQ Panasonic	CAP FILM 2.2UF 5% 630VDC RADIAL	0
ECQ-UBAF182M Panasonic	CAP FILM 0.0018UF 20% 300VAC RAD	1995
ECW-H8153HA Panasonic	CAP FILM 0.015UF 3% 800VDC RAD	775
ECQ-E1824JF3 Panasonic	CAP FILM 0.82UF 5% 100VDC RADIAL	0
ECW-FG80355J Panasonic	CAP FILM 3.5UF 800VDC RADIAL	136
ECW-F6154JL Panasonic	CAP FILM 0.15UF 5% 630VDC RADIAL	0
ECW-F2W124JAQ Panasonic	CAP FILM 0.12UF 5% 450VDC RADIAL	0
ECW-F6104JL Panasonic	CAP FILM 0.1UF 5% 630VDC RADIAL	6823
ECQ-E4153RKF Panasonic	CAP FILM 0.015UF 10% 400VDC RAD	0
ECQ-UAAV124SA Panasonic	CAP FILM 0.12UF 20% 310VAC RAD	0
ECQ-UBAF682V1 Panasonic	CAP FILM 0.0068UF 20% 300VAC RAD	1000
ECW-FE2W225K Panasonic	CAP FILM 2.2UF 10% 450VDC RADIAL	0
ECQ-E2224JF3 Panasonic	CAP FILM 0.22UF 5% 250VDC RADIAL	0
ECQ-UAAF225K Panasonic	CAP FILM 2.2UF 10% 275VAC RADIAL	6920
ECW-U2123JC9 Panasonic	CAP FILM 0.012UF 5% 250VDC 1913	10710
ECW-FD2W394KQ Panasonic	CAP FILM 0.39UF 10% 450VDC RAD	1202

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.