Film Capacitors

Image Part Number Description / PDF Quantity Rfq
BF014D0562J

BF014D0562J

Elco (AVX)

CAP FILM 5600PF 5% 63VDC RADIAL

0

BF054E0684J--

BF054E0684J--

Elco (AVX)

CAP FILM 0.68UF 5% 100VDC RADIAL

0

BQ014D0222K

BQ014D0222K

Elco (AVX)

CAP FILM 2200PF 10% 63VDC RADIAL

0

BQ014E0682K

BQ014E0682K

Elco (AVX)

CAP FILM 6800PF 10% 100VDC RAD

0

BF024G0393J--

BF024G0393J--

Elco (AVX)

CAP FILM 0.039UF 5% 250VDC RAD

0

BH014D0223J--

BH014D0223J--

Elco (AVX)

CAP FILM 0.022UF 5% 63VDC RADIAL

0

BQ014D0153K

BQ014D0153K

Elco (AVX)

CAP FILM 0.015UF 10% 63VDC RAD

0

BF014D0822K

BF014D0822K

Elco (AVX)

CAP FILM 8200PF 10% 63VDC RADIAL

0

BQ074D0474J

BQ074D0474J

Elco (AVX)

CAP FILM 0.47UF 5% 63VDC RADIAL

0

BF014D0393J

BF014D0393J

Elco (AVX)

CAP FILM 0.039UF 5% 63VDC RADIAL

0

BF024I0183JDC

BF024I0183JDC

Elco (AVX)

CAP FILM 0.018UF 5% 400VDC RAD

0

BF074E0224J

BF074E0224J

Elco (AVX)

CAP FILM 0.22UF 5% 100VDC RADIAL

0

BF014G0682K

BF014G0682K

Elco (AVX)

CAP FILM 6800PF 10% 250VDC RAD

0

BH024E0224KDB

BH024E0224KDB

Elco (AVX)

CAP FILM 0.22UF 10% 100VDC RAD

0

BQ014D0472K

BQ014D0472K

Elco (AVX)

CAP FILM 4700PF 10% 63VDC RADIAL

0

BF054D0155J--

BF054D0155J--

Elco (AVX)

CAP FILM 1.5UF 5% 63VDC RADIAL

0

BF014E0103J

BF014E0103J

Elco (AVX)

CAP FILM 10000PF 5% 100VDC RAD

0

BF074G0683JDC

BF074G0683JDC

Elco (AVX)

CAP FILM 0.068UF 5% 250VDC RAD

0

BF054D0155JDC

BF054D0155JDC

Elco (AVX)

CAP FILM 1.5UF 5% 63VDC RADIAL

0

BF074I0333JDD

BF074I0333JDD

Elco (AVX)

CAP FILM 0.033UF 5% 400VDC 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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