Film Capacitors

Image Part Number Description / PDF Quantity Rfq
ECW-FE2W104JA

ECW-FE2W104JA

Panasonic

CAP FILM 0.1UF 5% 450VDC RADIAL

0

ECH-U1123JC9

ECH-U1123JC9

Panasonic

CAP FILM 0.012UF 5% 100VDC 1913

5830

ECH-U1H272JB5

ECH-U1H272JB5

Panasonic

CAP FILM 2700PF 5% 50VDC 0805

7173

ECQ-E1184KF

ECQ-E1184KF

Panasonic

CAP FILM 0.18UF 10% 100VDC RAD

32480

ECQ-E6394KFA

ECQ-E6394KFA

Panasonic

CAP FILM 0.39UF 10% 630VDC RAD

0

ECH-U1H104GX9

ECH-U1H104GX9

Panasonic

CAP FILM 0.1UF 2% 50VDC 1913

5244

ECQ-E12333JFB

ECQ-E12333JFB

Panasonic

CAP FILM 0.033UF 5% 1.25KVDC RAD

0

ECW-F2154HAB

ECW-F2154HAB

Panasonic

CAP FILM 0.15UF 3% 250VDC RADIAL

0

ECQ-UAAF106TA

ECQ-UAAF106TA

Panasonic

CAP FILM 10UF 10% 275VAC RADIAL

48

ECQ-E2393RJF

ECQ-E2393RJF

Panasonic

CAP FILM 0.039UF 5% 250VDC RAD

0

ECQ-E1564KF3

ECQ-E1564KF3

Panasonic

CAP FILM 0.56UF 10% 100VDC RAD

0

ECQ-UAAF334T1

ECQ-UAAF334T1

Panasonic

CAP FILM 0.33UF 10% 275VAC RAD

0

ECW-FE2W684JA

ECW-FE2W684JA

Panasonic

CAP FILM 0.68UF 5% 450VDC RADIAL

0

ECW-FG70305JA

ECW-FG70305JA

Panasonic

CAP FILM 3.0UF 700VDC RADIAL

0

EZP-V60956MTC

EZP-V60956MTC

Panasonic

CAP FILM 95UF 10% 600V RADIAL

28

ECH-U1C333JX5

ECH-U1C333JX5

Panasonic

CAP FILM 0.033UF 5% 16VDC 1206

853

EZP-V60226MTT

EZP-V60226MTT

Panasonic

CAP FILM 22UF 10% 600V RADIAL

448

ECQ-E1185RKF

ECQ-E1185RKF

Panasonic

CAP FILM 1.8UF 10% 100VDC RADIAL

0

ECW-FG2J155KA

ECW-FG2J155KA

Panasonic

CAP FILM 1.5UF 10% 630VDC RADIAL

559

ECQ-E2274JF9

ECQ-E2274JF9

Panasonic

CAP FILM 0.27UF 5% 250VDC 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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