Film Capacitors

Image Part Number Description / PDF Quantity Rfq
100MU682MA13216

100MU682MA13216

Rubycon

CAP FILM 6800PF 20% 100VDC 1206

0

63MU102MZ12012

63MU102MZ12012

Rubycon

CAP FILM 1000PF 20% 63VDC 0805

0

16MU225MB23225

16MU225MB23225

Rubycon

CAP FILM 2.2UF 20% 16VDC 1210

1103

16MU225KB23225

16MU225KB23225

Rubycon

CAP FILM 2.2UF 10% 16VDC 1210

50

63MU335MD35750

63MU335MD35750

Rubycon

CAP FILM 3.3UF 20% 63VDC 2220

468

35MU683KZ12012

35MU683KZ12012

Rubycon

CAP FILM 0.068UF 10% 35VDC 0805

106

35MU335MC24532

35MU335MC24532

Rubycon

CAP FILM 3.3UF 20% 35VDC 1812

194

35MU223KY11608

35MU223KY11608

Rubycon

CAP FILM 0.022UF 10% 35VDC 0603

189

35MU104KZ22012

35MU104KZ22012

Rubycon

CAP FILM 0.1UF 10% 35VDC 0805

2883

63MU154KA13216

63MU154KA13216

Rubycon

CAP FILM 0.15UF 10% 63VDC 1206

186

450HVC507KR81L

450HVC507KR81L

Rubycon

CAP FILM 500UF 10% 450VDC R BOX

0

35ST684MA23216

35ST684MA23216

Rubycon

CAP FILM 0.68UF 20% 35VDC 1206

0

25ST475MC24532

25ST475MC24532

Rubycon

CAP FILM 4.7UF 20% 25VDC 1812

0

16ST475MC14532

16ST475MC14532

Rubycon

CAP FILM 4.7UF 20% 16VDC 1812

0

50ST224MA13216

50ST224MA13216

Rubycon

CAP FILM 0.22UF 20% 50VDC 1206

0

200MU102KA13216

200MU102KA13216

Rubycon

CAP FILM 1000PF 10% 200VDC 1206

0

35ST474MA13216

35ST474MA13216

Rubycon

CAP FILM 0.47UF 20% 35VDC 1206

0

25ST225MB23225

25ST225MB23225

Rubycon

CAP FILM 2.2UF 20% 25VDC 1210

0

50ST104MA13216

50ST104MA13216

Rubycon

CAP FILM 0.1UF 20% 50VDC 1206

0

63ST474MB23225

63ST474MB23225

Rubycon

CAP FILM 0.47UF 20% 63VDC 1210

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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