Datasheet > T97D226M063F8HSA

T97D226M063F8HSA

更新时间： 2022-09-29 18:21:49

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CAP TANT 22UF 63V 20% 2917

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Conformal Coated Guide

www.vishay.com

Vishay Sprague

Guide for Conformal Coated Tantalum Capacitors

Rating for rating, tantalum capacitors tend to have as much

INTRODUCTION

as three times better capacitance / volume efficiency than

aluminum electrolytic capacitors. An approximation of the

capacitance / volume efficiency of other types of capacitors

may be inferred from the following table, which shows the

dielectric constant ranges of the various materials used in

each type. Note that tantalum pentoxide has a dielectric

constant of 26, some three times greater than that of

aluminum oxide. This, in addition to the fact that extremely

thin films can be deposited during the electrolytic process

mentioned earlier, makes the tantalum capacitor extremely

efficient with respect to the number of microfarads available

per unit volume. The capacitance of any capacitor is

determined by the surface area of the two conducting

plates, the distance between the plates, and the dielectric

constant of the insulating material between the plates.

Tantalum electrolytic capacitors are the preferred choice in

applications where volumetric efficiency, stable electrical

parameters, high reliability, and long service life are primary

considerations. The stability and resistance to elevated

temperatures of the tantalum / tantalum oxide / manganese

dioxide system make solid tantalum capacitors an

appropriate choice for today's surface mount assembly

technology.

Vishay Sprague has been a pioneer and leader in this field,

producing a large variety of tantalum capacitor types for

consumer, industrial, automotive, military, and aerospace

electronic applications.

Tantalum is not found in its pure state. Rather, it is

commonly found in a number of oxide minerals, often in

combination with Columbium ore. This combination is

known as “tantalite” when its contents are more than

one-half tantalum. Important sources of tantalite include

Australia, Brazil, Canada, China, and several African

countries. Synthetic tantalite concentrates produced from

tin slags in Thailand, Malaysia, and Brazil are also a

significant raw material for tantalum production.

COMPARISON OF CAPACITOR

DIELECTRIC CONSTANTS

DIELECTRIC

DIELECTRIC CONSTANT

Air or vacuum

Paper

1.0

Electronic applications, and particularly capacitors,

consume the largest share of world tantalum production.

Other important applications for tantalum include cutting

tools (tantalum carbide), high temperature super alloys,

chemical processing equipment, medical implants, and

military ordnance.

2.0 to 6.0

2.1 to 6.0

2.2 to 2.3

2.7 to 2.8

3.8 to 4.4

4.8 to 8.0

5.1 to 5.9

5.4 to 8.7

8.4

Plastic

Mineral oil

Silicone oil

Quartz

Vishay Sprague is a major user of tantalum materials in the

form of powder and wire for capacitor elements and rod and

sheet for high temperature vacuum processing.

Glass

Porcelain

Mica

THE BASICS OF TANTALUM CAPACITORS

Most metals form crystalline oxides which are

non-protecting, such as rust on iron or black oxide on

copper. A few metals form dense, stable, tightly adhering,

electrically insulating oxides. These are the so-called “valve”

metals and include titanium, zirconium, niobium, tantalum,

hafnium, and aluminum. Only a few of these permit the

accurate control of oxide thickness by electrochemical

means. Of these, the most valuable for the electronics

industry are aluminum and tantalum.

Aluminum oxide

Tantalum pentoxide

Ceramic

12 to 400K

In the tantalum electrolytic capacitor, the distance between

the plates is very small since it is only the thickness of the

tantalum pentoxide film. As the dielectric constant of the

tantalum pentoxide is high, the capacitance of a tantalum

capacitor is high if the area of the plates is large:

Capacitors are basic to all kinds of electrical equipment,

from radios and television sets to missile controls and

automobile ignitions. Their function is to store an electrical

charge for later use.

------

C =

where

Capacitors consist of two conducting surfaces, usually

metal plates, whose function is to conduct electricity. They

are separated by an insulating material or dielectric. The

dielectric used in all tantalum electrolytic capacitors is

tantalum pentoxide.

C = capacitance

e = dielectric constant

A = surface area of the dielectric

t = thickness of the dielectric

Tantalum pentoxide compound possesses high-dielectric

strength and a high-dielectric constant. As capacitors are

being manufactured, a film of tantalum pentoxide is applied

to their electrodes by means of an electrolytic process. The

film is applied in various thicknesses and at various voltages

and although transparent to begin with, it takes on different

colors as light refracts through it. This coloring occurs on the

tantalum electrodes of all types of tantalum capacitors.

Tantalum capacitors contain either liquid or solid

electrolytes. In solid electrolyte capacitors, a dry material

(manganese dioxide) forms the cathode plate. A tantalum

lead is embedded in or welded to the pellet, which is in turn

connected to a termination or lead wire. The drawings show

the construction details of the surface mount types of

tantalum capacitors shown in this catalog.

Revision: 17-Jun-2021

Document Number: 40150

For technical questions, contact: tantalum@vishay.com

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

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与T97D226M063F8HSA相关器件

型号	品牌	描述	获取价格	数据表
T97D226M063F8HSB	VISHAY	CAP TANT 22UF 63V 20% 2917	获取价格
T97D226M063F8HSC	VISHAY	CAP TANT 22UF 63V 20% 2917	获取价格
T97D226M063F8TSC	VISHAY	CAP TANT 22UF 63V 20% 2917	获取价格
T97D336K050F8HSB	VISHAY	CAP TANT 33UF 50V 10% 2917	获取价格
T97D336K050F8HSC	VISHAY	CAP TANT 33UF 50V 10% 2917	获取价格
T97D336K050F8TSB	VISHAY	CAP TANT 33UF 50V 10% 2917	获取价格
T97D336M050F8HSB	VISHAY	CAP TANT 33UF 50V 20% 2917	获取价格
T97D336M050F8HSC	VISHAY	CAP TANT 33UF 50V 20% 2917	获取价格
T97D336M050F8TSB	VISHAY	CAP TANT 33UF 50V 20% 2917	获取价格
T97D476K050N8HSA	VISHAY	CAP TANT 47UF 50V 10% 2917	获取价格
T97D476K050N8HSB	VISHAY	CAP TANT 47UF 50V 10% 2917	获取价格
T97D476K050N8HSC	VISHAY	CAP TANT 47UF 50V 10% 2917	获取价格
T97D476K050N8HSZ	VISHAY	CAP TANT 47UF 50V 10% 2917	获取价格
T97D476K050N8TSA	VISHAY	CAP TANT 47UF 50V 10% 2917	获取价格
T97D476K050N8TSB	VISHAY	CAP TANT 47UF 50V 10% 2917	获取价格
T97D476K050N8TSC	VISHAY	CAP TANT 47UF 50V 10% 2917	获取价格
T97D476K050N8TSZ	VISHAY	CAP TANT 47UF 50V 10% 2917	获取价格
T97D476K050Z8HSA	VISHAY	CAP TANT 47UF 50V 10% 2917	获取价格
T97D476K050Z8HSB	VISHAY	CAP TANT 47UF 50V 10% 2917	获取价格
T97D476K050Z8HSC	VISHAY	CAP TANT 47UF 50V 10% 2917	获取价格

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