Film Capacitors

Part Number	Description / PDF	Quantity
R463F268040M1M KEMET	CAP FILM 0.068UF 20% 630VDC RAD	0
R73UI0330SE03J KEMET	CAP FILM 330PF 5% 2KVDC RADIAL	390
C4AQLLU5150A19K KEMET	CAP FILM 15UF 10% 500VDC RADIAL	60
R46KF247040H1M KEMET	CAP FILM 0.047UF 20% 560VDC RAD	580
R76PR3470SE30J KEMET	CAP FILM 0.47UF 5% 630VDC RADIAL	455
R60MF2330506AJ KEMET	CAP FILM 0.033UF 5% 400VDC RAD	0
PHE844RD6100MR30L2 KEMET	CAP FILM 0.1UF 20% 1KVDC RADIAL	0
MMK5474K100J04L4BULK KEMET	CAP FILM 0.47UF 10% 100VDC RAD	0
C274AC35250SA0J KEMET	CAP FILM 25UF 5% 470VAC RADIAL	92
R82EC2680Z360K KEMET	CAP FILM 0.068UF 10% 100VDC RAD	3955
F161WP155K050V KEMET	CAP FILM 1.5UF 10% 50VDC SMD	800
R463I310050H1M KEMET	CAP FILM 0.1UF 20% 630VDC RADIAL	1800
R75LI3100AA00K KEMET	CAP FILM 0.1UF 10% 560VDC RADIAL	3499
R82DC2820AA50J KEMET	CAP FILM 0.08UF 5% 63VDC RADIAL	3000
PME271M633KR30 KEMET	CAP FILM 0.33UF 10% 275VAC RAD	500
R76PD1100SE00J KEMET	CAP FILM 1000PF 5% 630VDC RADIAL	1329
C44UQGT7110G5SK KEMET	CAP FILM 1100UF 10% 1.1KVDC RAD	0
PHE426HF7330JR06L2 KEMET	CAP FILM 3.3UF 5% 250VDC RAD	124
R60DN51505030K KEMET	CAP FILM 15UF 10% 63VDC RADIAL	2228
LDBCA1330GC5N0 KEMET	CAP FILM 3300PF 2% 50VDC 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:

Determine required capacitance and voltage ratings with safety margins
Assess environmental conditions (temperature, humidity, vibration)
Evaluate dielectric absorption and frequency response requirements
Consider packaging constraints (through-hole vs. surface-mount)
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.