Film Capacitors

Image Part Number Description / PDF Quantity Rfq
ECQ-E2155JF3

ECQ-E2155JF3

Panasonic

CAP FILM 1.5UF 5% 250VDC RADIAL

0

ECQ-E2155KBB

ECQ-E2155KBB

Panasonic

CAP FILM 1.5UF 10% 250VDC RADIAL

0

ECW-FG1B335J

ECW-FG1B335J

Panasonic

CAP FILM 3.3UF 5% 1.1KVDC RAD

0

ECW-U2822V16

ECW-U2822V16

Panasonic

CAP FILM 8200PF 5% 250VDC 1913

0

ECQ-E4124RJF

ECQ-E4124RJF

Panasonic

CAP FILM 0.12UF 5% 400VDC RADIAL

0

ECQ-E4394KF3

ECQ-E4394KF3

Panasonic

CAP FILM 0.39UF 10% 400VDC RAD

0

EZP-E50117MTA

EZP-E50117MTA

Panasonic

CAP FILM 110UF 10% 500VDC RADIAL

166

ECQ-E2273JF3

ECQ-E2273JF3

Panasonic

CAP FILM 0.027UF 5% 250VDC RAD

0

ECW-U1334KC9

ECW-U1334KC9

Panasonic

CAP FILM 0.33UF 10% 100VDC 2820

75

ECW-FE2W475JA

ECW-FE2W475JA

Panasonic

CAP FILM 4.7UF 5% 450VDC RADIAL

0

ECQ-E2564KF

ECQ-E2564KF

Panasonic

CAP FILM 0.56UF 10% 250VDC RAD

0

ECW-FD2J823JQ

ECW-FD2J823JQ

Panasonic

CAP FILM 0.082UF 5% 630VDC RAD

895

ECQ-E2273KFB

ECQ-E2273KFB

Panasonic

CAP FILM 0.027UF 10% 250VDC RAD

0

ECQ-E1125KZ

ECQ-E1125KZ

Panasonic

CAP FILM 1.2UF 10% 100VDC RADIAL

2525

ECW-FD2J104KQ

ECW-FD2J104KQ

Panasonic

CAP FILM 0.1UF 10% 630VDC RADIAL

1952

ECQ-U2A122MV

ECQ-U2A122MV

Panasonic

CAP FILM 1200PF 20% 250VAC RAD

2402

ECQ-E4153JF3

ECQ-E4153JF3

Panasonic

CAP FILM 0.015UF 5% 400VDC RAD

0

ECQ-E4333JF9

ECQ-E4333JF9

Panasonic

CAP FILM 0.033UF 5% 400VDC RAD

0

ECQ-E2225KB

ECQ-E2225KB

Panasonic

CAP FILM 2.2UF 10% 250VDC RADIAL

4152

ECQ-UAAF154TA

ECQ-UAAF154TA

Panasonic

CAP FILM 0.15UF 10% 275VAC RAD

1998

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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