Film Capacitors

Part Number	Description / PDF	Quantity
QYX2A272JTP Nichicon	CAP FILM 2700PF 5% 100VDC RADIAL	2288
QYX1H222KTP1FD Nichicon	CAP FILM 2200PF 10% 50VDC RADIAL	1845
PHC1404500KN Nichicon	400V, 5UF, 10 PERCENT, AXIAL SWI	0
QXK2G684KTPTZH Nichicon	CAP FILM 0.68UF 10% 400VDC RAD	0
QXK2J104KTP7FM Nichicon	CAP FILM 0.1UF 10% 630VDC RAD	0
PHC1853330KJ Nichicon	850V, 0.33UF, 10 PERCENT, AXIAL	0
QXP2J334KRPT Nichicon	CAP FILM 0.33UF 10% 630VDC RAD	0
QXK2E225KTP Nichicon	CAP FILM 2.2UF 10% 250VDC RADIAL	0
PPA2123100KJ Nichicon	1200V, 0.1UF, 10 PERCENT, AXIAL	0
QYX1H274JTP Nichicon	CAP FILM 0.27UF 5% 50VDC RADIAL	0
QYX1H473KTP Nichicon	CAP FILM 0.047UF 10% 50VDC RAD	5
ER112421DD1 Nichicon	CAP FILM 420UF 10% 1.1KVDC RAD	0
QYX1H152JTP Nichicon	CAP FILM 1500PF 5% 50VDC RADIAL	2150
QXL2E103KTPT Nichicon	CAP FILM 10000PF 10% 250VAC RAD	5
PMB2203100KSP Nichicon	2000V,0.1UF,10 PERCENT, LUG MOUN	208
QYX2A123KTP Nichicon	CAP FILM 0.012UF 10% 100VDC RAD	0
QAP2J684KRP Nichicon	CAP FILM 0.68UF 10% 630VDC AXIAL	104
QXL2E104KTPT Nichicon	CAP FILM 0.1UF 10% 250VAC RADIAL	959
PMB2104200KVR Nichicon	1000V,2UF,10 PERCENT, LUG MOUNT	96
ER132261DD1 Nichicon	CAP FILM 260UF 10% 1.3KVDC RAD	0

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.