Film Capacitors

Part Number	Description / PDF	Quantity
QXK2G154JTP Nichicon	CAP FILM 0.15UF 5% 400VDC RAD	0
QXK2E475KTP7FT Nichicon	CAP FILM 4.7UF 10% 250VDC RAD	0
EEC2E126HQA406 Nichicon	CAP FILM 12UF 250VAC QC TERM	42
QXK2E335JTP7FT Nichicon	CAP FILM 3.3UF 5% 250VDC RAD	0
PMB1854250KSP Nichicon	850V,2.5UF,10 PERCENT, LUG MOUNT	0
QYX2A103JTP Nichicon	CAP FILM 10000PF 5% 100VDC RAD	6239
QXL2B334KTPT Nichicon	CAP FILM 0.33UF 10% 125VAC RAD	0
PPA2123470KN Nichicon	1200V, 0.47UF, 10 PERCENT, AXIAL	0
QXK2G155KTPTZH Nichicon	CAP FILM 1.5UF 10% 400VDC RADIAL	1
PMB2203100KSR Nichicon	2000V,0.1UF,10 PERCENT, LUG MOUN	214
QXK2J684KTP7FX Nichicon	CAP FILM 0.68UF 10% 630VDC RAD	0
PWS1632220KD Nichicon	630V, 0.022UF, 10 PERCENT, AXIAL	0
EEC2G605HQA407 Nichicon	CAP FILM 6UF 400VAC QC TERM	11
PMB2124200KVP Nichicon	1200V,2UF,10 PERCENT, LUG MOUNT	110
PHC1853470KJ Nichicon	850V, 0.47UF, 10 PERCENT, AXIAL	0
QAK2G105KTP Nichicon	CAP FILM 1UF 10% 400VDC AXIAL	0
PMB1854150KSP Nichicon	850V,1.5UF,10 PERCENT, LUG MOUNT	120
EEC2G126HQA415 Nichicon	CAP FILM 12UF 400VAC QC TERM	38
PSB2123220KHS Nichicon	1200V,0.22UF,10 PERCENT, RADIAL	0
QAP2G684KRP Nichicon	CAP FILM 0.68UF 10% 400VDC AXIAL	200

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.