Film Capacitors

Image Part Number Description / PDF Quantity Rfq
QXL2B473KTP7FG

QXL2B473KTP7FG

Nichicon

CAP FILM 0.047UF 10% 125VAC RAD

0

QXT2J682KRP7FM

QXT2J682KRP7FM

Nichicon

CAP FILM 6800PF 10% 630VDC RAD

0

QYX2A473KTP1FD

QYX2A473KTP1FD

Nichicon

CAP FILM 0.047UF 10% 100VDC RAD

0

EEC2E605HWNM09

EEC2E605HWNM09

Nichicon

CAP FILM 6UF -5% +10% 250VAC RAD

0

QYX1H682KTP1FD

QYX1H682KTP1FD

Nichicon

CAP FILM 6800PF 10% 50VDC RAD

0

QXK2G105JTP7ZHFT

QXK2G105JTP7ZHFT

Nichicon

CAP FILM 1UF 5% 400VDC RAD

0

QYX1H473KTP1FD

QYX1H473KTP1FD

Nichicon

CAP FILM 0.047UF 10% 50VDC RAD

0

QXP2G104JRPT

QXP2G104JRPT

Nichicon

CAP FILM 0.1UF 5% 400VDC RAD

0

QAP2J224JRP

QAP2J224JRP

Nichicon

CAP FILM 0.22UF 5% 630VDC AXIAL

0

QYX1H472KTP3TA

QYX1H472KTP3TA

Nichicon

CAP FILM 4700PF 10% 50VDC RADIAL

5983

QYX2A154JTP1FG

QYX2A154JTP1FG

Nichicon

CAP FILM 0.15UF 5% 100VDC RAD

0

QXP2G474KRP7FP

QXP2G474KRP7FP

Nichicon

CAP FILM 0.47UF 10% 400VDC RAD

0

QXP2G334JRPT

QXP2G334JRPT

Nichicon

CAP FILM 0.33UF 5% 400VDC RAD

0

QXL2E153KTP7FJ

QXL2E153KTP7FJ

Nichicon

CAP FILM 0.015UF 10% 250VAC RAD

0

QXP2K473JRPT

QXP2K473JRPT

Nichicon

CAP FILM 0.047UF 5% 800VDC RAD

0

QAK2G475JTP

QAK2G475JTP

Nichicon

CAP FILM 4.7UF 5% 400VDC AXIAL

0

QYX2A222JTP1FD

QYX2A222JTP1FD

Nichicon

CAP FILM 2200PF 5% 100VDC RAD

0

QAP2G155JRP

QAP2G155JRP

Nichicon

CAP FILM 1.5UF 5% 400VDC AXIAL

0

QXK2E334KTP7ZHFL

QXK2E334KTP7ZHFL

Nichicon

CAP FILM 0.33UF 10% 250VDC RAD

0

QXL2B105KTP7FT

QXL2B105KTP7FT

Nichicon

CAP FILM 1UF 10% 125VAC RADIAL

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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