Film Capacitors

Image Part Number Description / PDF Quantity Rfq
100MU102KA13216

100MU102KA13216

Rubycon

CAP FILM 1000PF 10% 100VDC 1206

72

35MU474MA13216

35MU474MA13216

Rubycon

CAP FILM 0.47UF 20% 35VDC 1206

0

63MU681KZ12012

63MU681KZ12012

Rubycon

CAP FILM 680PF 10% 63VDC 0805

180

35MU104MZ22012

35MU104MZ22012

Rubycon

CAP FILM 0.1UF 20% 35VDC 0805

0

50MU334KA23216

50MU334KA23216

Rubycon

CAP FILM 0.33UF 10% 50VDC 1206

1193

63MU331MZ12012

63MU331MZ12012

Rubycon

CAP FILM 330PF 20% 63VDC 0805

0

25MU106MD15750

25MU106MD15750

Rubycon

CAP FILM 10UF 20% 25VDC 2220

446

50MU224MA13216

50MU224MA13216

Rubycon

CAP FILM 0.22UF 20% 50VDC 1206

126

63MU152MZ12012

63MU152MZ12012

Rubycon

CAP FILM 1500PF 20% 63VDC 0805

0

100MU473MA23216

100MU473MA23216

Rubycon

CAP FILM 0.047UF 20% 100VDC 1206

71

63MU224MA23216

63MU224MA23216

Rubycon

CAP FILM 0.22UF 20% 63VDC 1206

5

35MU685MD15750

35MU685MD15750

Rubycon

CAP FILM 6.8UF 20% 35VDC 2220

1000

100MU472MA13216

100MU472MA13216

Rubycon

CAP FILM 4700PF 20% 100VDC 1206

0

25MU105MA23216

25MU105MA23216

Rubycon

CAP FILM 1UF 20% 25VDC 1206

2084

63MU105MC24532

63MU105MC24532

Rubycon

CAP FILM 1UF 20% 63VDC 1812

1029

50MU334MA23216

50MU334MA23216

Rubycon

CAP FILM 0.33UF 20% 50VDC 1206

0

16MU154MZ22012

16MU154MZ22012

Rubycon

CAP FILM 0.15UF 20% 16VDC 0805

0

100MU223MA13216

100MU223MA13216

Rubycon

CAP FILM 0.022UF 20% 100VDC 1206

0

25MU335KC14532

25MU335KC14532

Rubycon

CAP FILM 3.3UF 10% 25VDC 1812

166

63MU474MB23225

63MU474MB23225

Rubycon

CAP FILM 0.47UF 20% 63VDC 1210

1590

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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