Film Capacitors

Part Number	Description / PDF	Quantity
140192 TubeDepot	CAP FILM .01UF 630V SILVER LEAD	0
CP-AA-180-450V TubeDepot	CAP FILM 18UF 450V	7
539-150102K630BB TubeDepot	CAP FILM .001UF 630V COUPLING	0
CP-VO-VQ-47-200V TubeDepot	CAP FILM .47UF 200V OIL	0
PPE1000 TubeDepot	CAP FILM 10UF 630V SOLEN	13
CP-OD716-022-600V TubeDepot	CAP FILM .022UF 600V ORG DROP	48
PPE270 TubeDepot	CAP FILM 2.7UF 630V SOLEN	6
PPE330 TubeDepot	CAP FILM 3.3UF 630V SOLEN	34
PPE2700 TubeDepot	CAP FILM 27UF 630V SOLEN	3
149753 TubeDepot	CAP FILM .01UF 630V COPPER	10
715P33396LA3 TubeDepot	CAP ORG DROP 715 SER .033ΜF/600V	216
CP-AAXO-68-600V TubeDepot	CAP FILM .68UF 600V	0
CP-OD715-0015-600V TubeDepot	CAP FILM .0015UF 600V 715 SERIES	18
X06-10-00.047 TubeDepot	CAP FILM .047UF 600V	0
140210 TubeDepot	CAP FILM 1UF 630V SILV LEAD ALUM	0
CP-VO-CD-047-400V TubeDepot	CAP FILM .047UF 400V OIL	0
CP-OD716-001-600V TubeDepot	CAP FILM .001UF 600V 716 SERIES	57
PPE056 TubeDepot	CAP FILM .56UF 630V SOLEN	40
140193 TubeDepot	CAP FILM .022UF 630V LEAD ALUM	0
PPE150 TubeDepot	CAP FILM 1.5UF 630V SOLEN	24

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.