Film Capacitors

Image Part Number Description / PDF Quantity Rfq
EXH2E805HRPT

EXH2E805HRPT

Nichicon

CAP FILM 8UF -5% +10% 250VAC RAD

0

PMB2203560KSP

PMB2203560KSP

Nichicon

2000V,0.56UF,10 PERCENT, LUG MOU

0

QXP2G683KRPT

QXP2G683KRPT

Nichicon

CAP FILM 0.068UF 10% 400VDC RAD

0

QXK2E155KTP7FM

QXK2E155KTP7FM

Nichicon

CAP FILM 1.5UF 10% 250VDC RAD

0

QAK2J105KTP

QAK2J105KTP

Nichicon

CAP FILM 1UF 10% 630VDC AXIAL

54

QXK2G334JTP

QXK2G334JTP

Nichicon

CAP FILM 0.33UF 5% 400VDC RAD

0

PMB2153330KVR

PMB2153330KVR

Nichicon

1500V,0.33UF,10 PERCENT, LUG MOU

0

QYX2A333JTP

QYX2A333JTP

Nichicon

CAP FILM 0.033UF 5% 100VDC RAD

7791

QXK2E683KTP7FG

QXK2E683KTP7FG

Nichicon

CAP FILM 0.068UF 10% 250VDC RAD

0

EXH2E905HRPT

EXH2E905HRPT

Nichicon

CAP FILM 9UF -5% +10% 250VAC RAD

31

QXK2E224KTP7FJ

QXK2E224KTP7FJ

Nichicon

CAP FILM 0.22UF 10% 250VDC RAD

0

PHB1854600KRSD

PHB1854600KRSD

Nichicon

850V,6UF,10 PERCENT, RADIAL SWIT

0

QXK2E335KTPTZH

QXK2E335KTPTZH

Nichicon

CAP FILM 3.3UF 10% 250VDC RADIAL

0

PHC1604300KN

PHC1604300KN

Nichicon

600V, 3UF, 10 PERCENT, AXIAL SWI

0

QXK2J103KTPTZH

QXK2J103KTPTZH

Nichicon

CAP FILM 10000PF 10% 630VDC RAD

1160

PSB2253100KHS

PSB2253100KHS

Nichicon

2500V,0.1UF,10 PERCENT, RADIAL S

0

QXT2J103KRPT

QXT2J103KRPT

Nichicon

CAP FILM 10000PF 10% 630VDC RAD

448

PWS2201470KG

PWS2201470KG

Nichicon

2000V, 0.0047UF, 10 PERCENT, AXI

0

PWS2153100KJ

PWS2153100KJ

Nichicon

1500V, 0.1UF, 10 PERCENT, AXIAL

0

QXK2J105JTP

QXK2J105JTP

Nichicon

CAP FILM 1UF 5% 630VDC 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:

  1. Determine required capacitance and voltage ratings with safety margins
  2. Assess environmental conditions (temperature, humidity, vibration)
  3. Evaluate dielectric absorption and frequency response requirements
  4. Consider packaging constraints (through-hole vs. surface-mount)
  5. 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.

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