Film Capacitors

Image Part Number Description / PDF Quantity Rfq
ECW-FE2W684KA

ECW-FE2W684KA

Panasonic

CAP FILM 0.68UF 10% 450VDC RAD

0

ECW-FA2J124J5

ECW-FA2J124J5

Panasonic

CAP FILM 0.12UF 5% 630VDC RADIAL

0

ECQ-E12333JF

ECQ-E12333JF

Panasonic

CAP FILM 0.033UF 5% 1.25KVDC RAD

0

ECH-U1C683GX5

ECH-U1C683GX5

Panasonic

CAP FILM 0.068UF 2% 16VDC 1210

3691

ECQ-E4273KFB

ECQ-E4273KFB

Panasonic

CAP FILM 0.027UF 10% 400VDC RAD

0

ECW-F6473HL

ECW-F6473HL

Panasonic

CAP FILM 0.047UF 3% 630VDC RAD

111

ECQ-E1275RJF

ECQ-E1275RJF

Panasonic

CAP FILM 2.7UF 5% 100VDC RADIAL

0

ECQ-E2684KFW

ECQ-E2684KFW

Panasonic

CAP FILM 0.68UF 10% 250VDC RAD

0

ECW-H16222JV

ECW-H16222JV

Panasonic

CAP FILM 2200PF 5% 1.6KVDC RAD

785

ECQ-E1155JF3

ECQ-E1155JF3

Panasonic

CAP FILM 1.5UF 5% 100VDC RADIAL

0

ECW-FD2W335K

ECW-FD2W335K

Panasonic

CAP FILM 3.3UF 10% 450VDC RADIAL

0

ECQ-UAAF123MA

ECQ-UAAF123MA

Panasonic

CAP FILM 0.012UF 20% 275VAC RADI

0

ECW-U1183KC9

ECW-U1183KC9

Panasonic

CAP FILM 0.018UF 10% 100VDC 1913

5010

ECQ-UAAF105T1

ECQ-UAAF105T1

Panasonic

CAP FILM 1UF 10% 275VAC RAD

419

ECH-U1H103JB5

ECH-U1H103JB5

Panasonic

CAP FILM 10000PF 5% 50VDC 1206

5168

ECQ-E6103KFB

ECQ-E6103KFB

Panasonic

CAP FILM 10000PF 10% 630VDC RAD

0

ECW-H12823JV

ECW-H12823JV

Panasonic

CAP FILM 0.082UF 5% 1.25KVDC RAD

165

ECQ-E4334JFW

ECQ-E4334JFW

Panasonic

CAP FILM 0.33UF 5% 400VDC RADIAL

0

EZP-V60106LTT

EZP-V60106LTT

Panasonic

CAP FILM 10UF 10% 600V RADIAL

217

ECQ-UBAF182K

ECQ-UBAF182K

Panasonic

CAP FILM 0.0018UF 10% 300VAC RAD

1000

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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