Film Capacitors

Image Part Number Description / PDF Quantity Rfq
250MPH224J

250MPH224J

Rubycon

CAP FILM 0.22UF 5% 250VDC RADIAL

2471

35MU683MZ12012

35MU683MZ12012

Rubycon

CAP FILM 0.068UF 20% 35VDC 0805

0

63MU334MB13225

63MU334MB13225

Rubycon

CAP FILM 0.33UF 20% 63VDC 1210

0

35MU225MC14532

35MU225MC14532

Rubycon

CAP FILM 2.2UF 20% 35VDC 1812

28

35MU475KC44532

35MU475KC44532

Rubycon

CAP FILM 4.7UF 10% 35VDC 1812

694

100MU152MA13216

100MU152MA13216

Rubycon

CAP FILM 1500PF 20% 100VDC 1206

0

630MPB104J

630MPB104J

Rubycon

CAP FILM 0.1UF 5% 630VDC RADIAL

2042

25MU154KZ22012

25MU154KZ22012

Rubycon

CAP FILM 0.15UF 10% 25VDC 0805

2745

63MU471KZ12012

63MU471KZ12012

Rubycon

CAP FILM 470PF 10% 63VDC 0805

155

16MU473KY11608

16MU473KY11608

Rubycon

CAP FILM 0.047UF 10% 16VDC 0603

3531

450MPK474J

450MPK474J

Rubycon

CAP FILM 0.47UF 5% 450VDC RADIAL

3276

16MU335MB33225

16MU335MB33225

Rubycon

CAP FILM 3.3UF 20% 16VDC 1210

955

50MU152KY11608

50MU152KY11608

Rubycon

CAP FILM 1500PF 10% 50VDC 0603

190

63MU472KZ12012

63MU472KZ12012

Rubycon

CAP FILM 4700PF 10% 63VDC 0805

140

100MU103MA13216

100MU103MA13216

Rubycon

CAP FILM 10000PF 20% 100VDC 1206

0

63MU153MZ12012

63MU153MZ12012

Rubycon

CAP FILM 0.015UF 20% 63VDC 0805

0

450MPK105J

450MPK105J

Rubycon

CAP FILM 1UF 5% 450VDC RADIAL

1501

63MU103KZ12012

63MU103KZ12012

Rubycon

CAP FILM 10000PF 10% 63VDC 0805

33

100MU332MA13216

100MU332MA13216

Rubycon

CAP FILM 3300PF 20% 100VDC 1206

0

100MU333MA13216

100MU333MA13216

Rubycon

CAP FILM 0.033UF 20% 100VDC 1206

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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