Film Capacitors

Part Number	Description / PDF	Quantity
QAK2J474KTP Nichicon	CAP FILM 0.47UF 10% 630VDC AXIAL	55
EXH2E126HRPT Nichicon	CAP FILM 12UF 250VAC RADIAL	0
QXK2J153JTP Nichicon	CAP FILM 0.015UF 5% 630VDC RAD	0
QXK2E474JTP Nichicon	CAP FILM 0.47UF 5% 250VDC RAD	0
QXK2J333JTP Nichicon	CAP FILM 0.033UF 5% 630VDC RAD	0
QYX2A122JTP Nichicon	CAP FILM 1200PF 5% 100VDC RADIAL	4303
QXL2E223KTPT Nichicon	CAP FILM 0.022UF 10% 250VAC RAD	399
PPA2203100KJ Nichicon	2000V, 0.1UF, 10 PERCENT, AXIAL	250
PMB2153330KSP Nichicon	1500V,0.33UF,10 PERCENT, LUG MOU	0
PMB2124100KSR Nichicon	1200V,1UF,10 PERCENT, LUG MOUNT	120
QXK2G473KTP Nichicon	CAP FILM 0.047UF 10% 400VDC RAD	265
QYX2A274KTP Nichicon	CAP FILM 0.27UF 10% 100VDC RAD	0
QXK2G474JTP7FM Nichicon	CAP FILM 0.47UF 5% 400VDC RAD	0
QYX1H682KTP Nichicon	CAP FILM 6800PF 10% 50VDC RADIAL	2509
QAK2J225KTP Nichicon	CAP FILM 2.2UF 10% 630VDC AXIAL	184
PMB1854250KVP Nichicon	850V,2.5UF,10 PERCENT, LUG MOUNT	96
QXK2J154KTP Nichicon	CAP FILM 0.15UF 10% 630VDC RAD	382
QXK2J224KTP7FM Nichicon	CAP FILM 0.22UF 10% 630VDC RAD	0
EEC2E206HQA415 Nichicon	CAP FILM 20UF 250VAC QC TERM	85
QYX2A102JTP Nichicon	CAP FILM 1000PF 5% 100VDC RADIAL	1288

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.