Thin Film Capacitors

Image	Part Number	Description / PDF	Quantity
	06033K270GBTTR Elco (AVX)	CAP THIN FILM 27PF 25V 0603	0
$04023J0R8BBSTR\500$	04023J0R8BBSTR\500 Elco (AVX)	CAP THIN FILM 0.8PF 25V 0402	0
	04023J1R1BBWTR Elco (AVX)	CAP THIN FILM 1.1PF 25V 0402	0
$12101K470JBTTR\R$	12101K470JBTTR\R Elco (AVX)	CAP THIN FILM 47PF 100V 1210	0
	04021JR85PBSTR Elco (AVX)	CAP THIN FILM 0.85PF 100V 0402	48
	08055J120GBTTR Elco (AVX)	CAP THIN FILM 12PF 50V 0805	0
	TFSQ0402C0H1C0R5WT TDK Corporation	CAP THIN FILM 0.5PF 16V 01005	2664
$04021J0R8P4STR\500$	04021J0R8P4STR\500 Elco (AVX)	CAP THIN FILM 0.8PF 100V 0402	1500
	04023J4R2ABWTR Elco (AVX)	CAP THIN FILM 4.2PF 25V 0402	0
	06035J0R2QBTTR Elco (AVX)	CAP THIN FILM 0.2PF 50V 0603	0
	06033J1R2ABTTR Elco (AVX)	CAP THIN FILM 1.2PF 25V 0603	0
	08051J0R3BBTTR Elco (AVX)	CAP THIN FILM 0.3PF 100V 0805	0
	02013J1R0BBSTR Elco (AVX)	CAP THIN FILM 1PF 25V 0201	0
	08051J8R2CBTTR Elco (AVX)	CAP THIN FILM 8.2PF 100V 0805	0
	04023J3R8CBWTR Elco (AVX)	CAP THIN FILM 3.8PF 25V 0402	0
	0201YJ2R9BBWTR Elco (AVX)	CAP THIN FILM 2.9PF 16V 0201	0
	08051J3R3ABTTR Elco (AVX)	CAP THIN FILM 3.3PF 100V 0805	0
	0402ZJ1R4BBWTR Elco (AVX)	CAP THIN FILM 1.4PF 10V 0402	0
	04023J0R7BBWTR Elco (AVX)	CAP THIN FILM 0.7PF 25V 0402	0
$04025J6R8ABSTR\500$	04025J6R8ABSTR\500 Elco (AVX)	CAP THIN FILM 6.8PF 50V 0402	0

Thin Film Capacitors

1. Overview

Thin Film Capacitors are passive electronic components formed by depositing metallic electrodes on dielectric polymer films through vacuum evaporation or sputtering processes. They exhibit excellent high-frequency performance, low equivalent series resistance (ESR), and superior stability under temperature variations. These capacitors play a critical role in modern electronics for decoupling, filtering, and energy storage applications due to their compact size, long lifespan, and high reliability.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Polyester (PET) Film Capacitors	Cost-effective, wide capacitance range (nF- F), stable up to 125 C	Consumer electronics, power supplies
Polypropylene (PP) Film Capacitors	High dielectric strength, low losses at high voltages	AC motor starters, renewable energy inverters
Polystyrene (PS) Film Capacitors	Precision capacitors with tight tolerance (<1%), excellent temperature stability	Medical imaging equipment, test instruments
Ceramic-Film Hybrid Capacitors	Combines ceramic's high permittivity with polymer's flexibility	5G base stations, aerospace electronics
Metallized Film Capacitors	Self-healing properties, reduced size through segmented electrodes	LED lighting ballasts, automotive DC-Link

3. Structure and Composition

Typical layered structure:

Electrode Layer: Aluminum or zinc alloys (50-200nm thickness) deposited via vacuum metallization
Dielectric Layer: Polymer films (PET/PP/PS) with thickness 0.6-10 m determining voltage rating
Barrier Layer: Silicon oxide coating for moisture protection
Termination: Solder-plated copper or silver epoxy for PCB mounting
Encapsulation: Epoxy resin or molded plastic housing

4. Key Technical Parameters

Parameter	Significance	Typical Range
Capacitance (C)	Determines charge storage capacity	100pF - 50 F
Voltage Rating (V)	Max operating voltage before dielectric breakdown	50V - 2000V
Temperature Coefficient	Capacitance drift with temperature (ppm/ C)	50 to 200ppm/ C
Dissipation Factor (DF)	Energy loss indicator (lower=more efficient)	0.0002 - 0.02
Insulation Resistance	Leakage current prevention capability	10^4 - 10^6 M
Operating Temperature	Environmental reliability range	-55 C to +150 C

5. Application Fields

Electronics: Switching power supplies, EMI filtering in smartphones
Automotive: Battery management systems for EVs, DC-Link capacitors in inverters
Industrial: Variable frequency drives for HVAC systems
Medical: MRI machine gradient coil drivers
Aerospace: Avionics power conditioning units

6. Leading Manufacturers and Products

Manufacturer	Country	Representative Product
TDK Corporation	Japan	C4532X5R1H106KK1270 (10 F, 50V, X5R)
KEMET Electronics	USA	C1117C103JRAC7800 (10nF, 1000V, PP film)
Vishay Intertechnology	USA	MK3250C103K1L2BA (250V, 10nF, automotive grade)
W rth Elektronik	Germany	860111470002 (1.1 F, 1200V, SiC inverter optimized)

7. Selection Guidelines

Calculate required capacitance and voltage derating (use 80% of rated voltage)
Match temperature coefficient with operating environment
For high-frequency applications: prioritize low DF and self-inductance
In harsh environments: select capacitors with reinforced encapsulation
Consider RoHS compliance and AEC-Q200 automotive certification

8. Industry Trends Analysis

Key development directions include:

High-frequency optimization for SiC/GaN power electronics (up to 10MHz switching)
Thermal-resistant films for automotive applications (operating temperature >175 C)
Embedded capacitor solutions for HDI PCBs with thickness <50 m
Low-halogen encapsulation materials meeting REACH standards
Smart capacitors with integrated temperature/voltage sensors