Film Capacitors

Part Number	Description / PDF	Quantity
100MU103KA13216 Rubycon	CAP FILM 10000PF 10% 100VDC 1206	3000
25MU335MC14532 Rubycon	CAP FILM 3.3UF 20% 25VDC 1812	1000
16MU154KZ22012 Rubycon	CAP FILM 0.15UF 10% 16VDC 0805	109
50MU474MB13225 Rubycon	CAP FILM 0.47UF 20% 50VDC 1210	1994
50MU331KY11608 Rubycon	CAP FILM 330PF 10% 50VDC 0603	80
100MU332KA13216 Rubycon	CAP FILM 3300PF 10% 100VDC 1206	166
35MU153KY11608 Rubycon	CAP FILM 0.015UF 10% 35VDC 0603	86
25MU154MZ22012 Rubycon	CAP FILM 0.15UF 20% 25VDC 0805	0
16MU106MC44532 Rubycon	CAP FILM 10UF 20% 16VDC 1812	968
100MU102MA13216 Rubycon	CAP FILM 1000PF 20% 100VDC 1206	0
50MU333KZ22012 Rubycon	CAP FILM 0.033UF 10% 50VDC 0805	123
121MPE223J Rubycon	CAP FILM 0.022UF 5% 1.25KVDC RAD	128
50MU105MC14532 Rubycon	CAP FILM 1UF 20% 50VDC 1812	639
35MU475MC44532 Rubycon	CAP FILM 4.7UF 20% 35VDC 1812	806
25MU685MC44532 Rubycon	CAP FILM 6.8UF 20% 25VDC 1812	496
200MU104KC43245 Rubycon	CAP FILM 0.1UF 10% 200VDC 1218	165
63MU151MZ12012 Rubycon	CAP FILM 150PF 20% 63VDC 0805	0
100MU222KA13216 Rubycon	CAP FILM 2200PF 10% 100VDC 1206	198
200MU101KA13216 Rubycon	CAP FILM 100PF 10% 200VDC 1206	2420
50MU475MD35750 Rubycon	CAP FILM 4.7UF 20% 50VDC 2220	119

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.