Film Capacitors

Image Part Number Description / PDF Quantity Rfq
EZP-Q38106MTA

EZP-Q38106MTA

Panasonic

CAP FILM 10UF 5% 380VAC RADIAL

100

ECW-F2565JAB

ECW-F2565JAB

Panasonic

CAP FILM 5.6UF 5% 250VDC RADIAL

0

ECQ-UBAF333MA

ECQ-UBAF333MA

Panasonic

CAP FILM 0.033UF 20% 300VAC RADI

0

ECQ-UBAF153K

ECQ-UBAF153K

Panasonic

CAP FILM 0.015UF 10% 300VAC RADI

0

ECW-F4114JL

ECW-F4114JL

Panasonic

CAP FILM 0.11UF 5% 400VDC RADIAL

388

ECW-FG70105JA

ECW-FG70105JA

Panasonic

CAP FILM 1.0UF 700VDC RADIAL

0

ECQ-E6123JFB

ECQ-E6123JFB

Panasonic

CAP FILM 0.012UF 5% 630VDC RAD

0

ECW-F2104RJA

ECW-F2104RJA

Panasonic

CAP FILM 0.1UF 5% 250VDC RADIAL

0

ECW-FA2J564JB

ECW-FA2J564JB

Panasonic

CAP FILM 0.56UF 5% 630VDC RADIAL

0

ECW-H8273HA

ECW-H8273HA

Panasonic

CAP FILM 0.027UF 3% 800VDC RAD

0

ECW-FD2J103KB

ECW-FD2J103KB

Panasonic

CAP FILM 10000PF 10% 630VDC RAD

990

ECQ-E4183KF

ECQ-E4183KF

Panasonic

CAP FILM 0.018UF 10% 400VDC RAD

2920

ECQ-E2274RJF

ECQ-E2274RJF

Panasonic

CAP FILM 0.27UF 5% 250VDC RADIAL

0

ECW-F4514JL

ECW-F4514JL

Panasonic

CAP FILM 0.51UF 5% 400VDC RADIAL

254

ECQ-E2124RKF

ECQ-E2124RKF

Panasonic

CAP FILM 0.12UF 10% 250VDC RAD

0

ECQ-E6333KFW

ECQ-E6333KFW

Panasonic

CAP FILM 0.033UF 10% 630VDC RAD

0

ECW-H6124HCC

ECW-H6124HCC

Panasonic

CAP FILM 0.12UF 3% 630VDC RADIAL

995

ECQ-E6224KF

ECQ-E6224KF

Panasonic

CAP FILM 0.22UF 10% 630VDC RAD

0

ECQ-E1185JFB

ECQ-E1185JFB

Panasonic

CAP FILM 1.8UF 5% 100VDC RADIAL

0

ECQ-E4274JFB

ECQ-E4274JFB

Panasonic

CAP FILM 0.27UF 5% 400VDC 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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