Film Capacitors

Part Number	Description / PDF	Quantity
PSB2253100KHL Nichicon	2500V,0.1UF,10 PERCENT, RADIAL S	0
PMB2124100KSP Nichicon	1200V,1UF,10 PERCENT, LUG MOUNT	120
QYX2A563JTP Nichicon	CAP FILM 0.056UF 5% 100VDC RAD	3148
EEC2E605HQA402 Nichicon	CAP FILM 6UF 250VAC QC TERM	72
QXK2J103KTP7FJ Nichicon	CAP FILM 10000PF 10% 630VDC RAD	0
QYX2A472JTP Nichicon	CAP FILM 4700PF 5% 100VDC RADIAL	1488
PMB1853820KVP Nichicon	850V,0.82UF,10 PERCENT, LUG MOUN	144
QYX2A392KTP Nichicon	CAP FILM 3900PF 10% 100VDC RAD	1329
QXK2J104JTP Nichicon	CAP FILM 0.1UF 5% 630VDC RAD	0
QYX2A272KTP Nichicon	CAP FILM 2700PF 10% 100VDC RAD	232
QYX2A153KTP Nichicon	CAP FILM 0.015UF 10% 100VDC RAD	2223
QYX2A332KTP Nichicon	CAP FILM 3300PF 10% 100VDC RAD	2490
QYX1H332JTP Nichicon	CAP FILM 3300PF 5% 50VDC RADIAL	3443
QYX2A222JTP Nichicon	CAP FILM 2200PF 5% 100VDC RADIAL	5361
PMB2123330KVP Nichicon	1200V,0.33UF,10 PERCENT, LUG MOU	144
QXK2E155KTP Nichicon	CAP FILM 1.5UF 10% 250VDC RADIAL	45
QXP2G474KRPT Nichicon	CAP FILM 0.47UF 10% 400VDC RAD	1643
PMB2124150KSP Nichicon	1200V,1.5UF,10 PERCENT, LUG MOUN	100
QYX2A224JTP Nichicon	CAP FILM 0.22UF 5% 100VDC RADIAL	0
QXK2G153KTP Nichicon	CAP FILM 0.015UF 10% 400VDC RAD	488

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.