Film Capacitors

Image Part Number Description / PDF Quantity Rfq
ECQ-UAAF225M

ECQ-UAAF225M

Panasonic

CAP FILM 2.2UF 20% 275VAC RADIAL

191

EZP-V60556MTS

EZP-V60556MTS

Panasonic

CAP FILM 55UF 10% 600V RADIAL

50

ECQ-UAAF154K

ECQ-UAAF154K

Panasonic

CAP FILM 0.15UF 10% 275VAC RAD

0

ECQ-UBAF473V2

ECQ-UBAF473V2

Panasonic

CAP FILM 0.047UF 20% 300VAC RADI

0

ECQ-UAAF183KA

ECQ-UAAF183KA

Panasonic

CAP FILM 0.018UF 10% 275VAC RADI

0

ECW-U2563KC9

ECW-U2563KC9

Panasonic

CAP FILM 0.056UF 10% 250VDC 2416

6883

ECQ-E2155JFB

ECQ-E2155JFB

Panasonic

CAP FILM 1.5UF 5% 250VDC RADIAL

0

EZP-Q60225LTA

EZP-Q60225LTA

Panasonic

CAP FILM 2.2UF 10% 600VAC RADIAL

0

ECW-FE2J105KA

ECW-FE2J105KA

Panasonic

CAP FILM 1UF 10% 630VDC RADIAL

0

ECW-FG2J155QA

ECW-FG2J155QA

Panasonic

CAP FILM 1.5UF 10% 630VDC RADIAL

560

ECQ-E2474JB

ECQ-E2474JB

Panasonic

CAP FILM 0.47UF 5% 250VDC RADIAL

3273

ECW-F4303JL

ECW-F4303JL

Panasonic

CAP FILM 0.03UF 5% 400VDC RADIAL

243

ECQ-E2105JFB

ECQ-E2105JFB

Panasonic

CAP FILM 1UF 5% 250VDC RADIAL

0

ECW-FA2J105J

ECW-FA2J105J

Panasonic

CAP FILM 1UF 5% 630VDC RADIAL

8124

ECQ-UBAF223K

ECQ-UBAF223K

Panasonic

CAP FILM 0.022UF 10% 300VAC RADI

0

EZP-V1B156MTB

EZP-V1B156MTB

Panasonic

CAP FILM 15UF 10% 1100V RADIAL

97

ECW-U1184KC9

ECW-U1184KC9

Panasonic

CAP FILM 0.18UF 10% 100VDC 2820

52

ECQ-UAAF823MA

ECQ-UAAF823MA

Panasonic

CAP FILM 0.082UF 20% 275VAC RADI

0

ECQ-E2125JFB

ECQ-E2125JFB

Panasonic

CAP FILM 1.2UF 5% 250VDC RADIAL

0

ECQ-E2123KBB

ECQ-E2123KBB

Panasonic

CAP FILM 0.012UF 10% 250VDC 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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