Film Capacitors

Image Part Number Description / PDF Quantity Rfq
QXK2J153KTP

QXK2J153KTP

Nichicon

CAP FILM 0.015UF 10% 630VDC RAD

424

QYX1H474JTP

QYX1H474JTP

Nichicon

CAP FILM 0.47UF 5% 50VDC RADIAL

262

QXK2G154KTP

QXK2G154KTP

Nichicon

CAP FILM 0.15UF 10% 400VDC RAD

780

QXK2E684KTP7FM

QXK2E684KTP7FM

Nichicon

CAP FILM 0.68UF 10% 250VDC RAD

0

QAP2J334KRP

QAP2J334KRP

Nichicon

CAP FILM 0.33UF 10% 630VDC AXIAL

17

QXP2G105KRPT

QXP2G105KRPT

Nichicon

CAP FILM 1UF 10% 400VDC RADIAL

2

QXK2E223KTP

QXK2E223KTP

Nichicon

CAP FILM 0.022UF 10% 250VDC RAD

684

QYX2A224KTP

QYX2A224KTP

Nichicon

CAP FILM 0.22UF 10% 100VDC RAD

704

QXK2E684KTP

QXK2E684KTP

Nichicon

CAP FILM 0.68UF 10% 250VDC RAD

0

PWS1632150KD

PWS1632150KD

Nichicon

630V, 0.015UF, 10 PERCENT, AXIAL

0

PHC1704200KN

PHC1704200KN

Nichicon

700V, 2UF, 10 PERCENT, AXIAL SWI

0

QXP2K224KRPT

QXP2K224KRPT

Nichicon

CAP FILM 0.22UF 10% 800VDC RAD

0

QXK2G103KTP7FG

QXK2G103KTP7FG

Nichicon

CAP FILM 10000PF 10% 400VDC RAD

0

QXP2K334KRPT

QXP2K334KRPT

Nichicon

CAP FILM 0.33UF 10% 800VDC RAD

54

QXK2E154KTP7FG

QXK2E154KTP7FG

Nichicon

CAP FILM 0.15UF 10% 250VDC RAD

0

QYX1H472JTP

QYX1H472JTP

Nichicon

CAP FILM 4700PF 5% 50VDC RADIAL

3286

QXL2B333KTPT

QXL2B333KTPT

Nichicon

CAP FILM 0.033UF 10% 125VAC RAD

13

QXT2G683KRPT

QXT2G683KRPT

Nichicon

CAP FILM 0.068UF 10% 400VDC RAD

0

QXP2G154KRPT

QXP2G154KRPT

Nichicon

CAP FILM 0.15UF 10% 400VDC RAD

0

MABA033820KGS

MABA033820KGS

Nichicon

500V,0.82UF,RADIAL AC/ MOTOR RUN

650

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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