Film Capacitors

Image Part Number Description / PDF Quantity Rfq
BQ014D0182K

BQ014D0182K

Elco (AVX)

CAP FILM 1800PF 10% 63VDC RADIAL

0

BF024D0274K

BF024D0274K

Elco (AVX)

CAP FILM 0.27UF 10% 63VDC RADIAL

0

BQ014E0333J

BQ014E0333J

Elco (AVX)

CAP FILM 0.033UF 5% 100VDC RAD

0

BF024G0333K

BF024G0333K

Elco (AVX)

CAP FILM 0.033UF 10% 250VDC RAD

0

BF014D0124J

BF014D0124J

Elco (AVX)

CAP FILM 0.12UF 5% 63VDC RADIAL

0

BF054D0225K

BF054D0225K

Elco (AVX)

CAP FILM 2.2UF 10% 63VDC RADIAL

0

BF014D0332J

BF014D0332J

Elco (AVX)

CAP FILM 3300PF 5% 63VDC RADIAL

0

BH074D0105JDD

BH074D0105JDD

Elco (AVX)

CAP FILM 1UF 5% 63VDC RADIAL

0

BH074D0105KDD

BH074D0105KDD

Elco (AVX)

CAP FILM 1UF 10% 63VDC RADIAL

0

BH074D0474J7D

BH074D0474J7D

Elco (AVX)

CAP FILM 0.47UF 5% 63VDC RADIAL

0

BF014E0472J

BF014E0472J

Elco (AVX)

CAP FILM 4700PF 5% 100VDC RADIAL

0

BF014E0822J8T

BF014E0822J8T

Elco (AVX)

CAP FILM 8200PF 5% 100VDC RADIAL

0

BH024D0334J7D

BH024D0334J7D

Elco (AVX)

CAP FILM 0.33UF 5% 63VDC RADIAL

0

BF074D0684J

BF074D0684J

Elco (AVX)

CAP FILM 0.68UF 5% 63VDC RADIAL

0

BF014G0333K--

BF014G0333K--

Elco (AVX)

CAP FILM 0.033UF 10% 250VDC RAD

0

BF014I0222JDC

BF014I0222JDC

Elco (AVX)

CAP FILM 2200PF 5% 400VDC RADIAL

0

BQ014D0122K

BQ014D0122K

Elco (AVX)

CAP FILM 1200PF 10% 63VDC RADIAL

0

BF014I0103JDB

BF014I0103JDB

Elco (AVX)

CAP FILM 10000PF 5% 400VDC RAD

0

BF074D0105J

BF074D0105J

Elco (AVX)

CAP FILM 1UF 5% 63VDC RADIAL

0

BF014D0123K

BF014D0123K

Elco (AVX)

CAP FILM 0.012UF 10% 63VDC 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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