489D, 499D

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Vishay Sprague

Revision: 04-Aug-2020

8

Document Number: 42070

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

GUIDE TO APPLICATION

1. AC Ripple Current: the maximum allowable ripple

current shall be determined from the formula:

where,

P = power dissipation in W at +25 °C as given below

specified frequency

2. AC Ripple Voltage: the maximum allowable ripple

voltage shall be determined from the formula:

where,

Z = the capacitor impedance at the specified frequency

3. AC Ripple Current or Voltage Derating Factor: if these

capacitors are to be operated at temperatures above

+25 °C, the permissible RMS ripple current or voltage

shall be calculated using the derating factors in the table

below:

4. Power Dissipation: power dissipation will be affected by

the heat sinking capability of the mounting surface.

Non-sinusoidal ripple current may produce heating

effects which differ from those shown in the following

established when calculating permissible operating

levels.

5. Cleaning: these capacitors are compatible with all

commonly used solvents, such as TES, TMS, Prelete and

Chloretane. Solvents containing methylene chloride or

other epoxy solvents should be avoided since these will

attack the epoxy encapsulation material.

TEMPERATURE

DERATING FACTOR

+25 °C

1.0

+55 °C

0.9

+85 °C

0.8

+125 °C

0.4

I

RMS

P

R

ESR

------------

=

V

RMS

P

R

ESR

Z

=

CASE CODE

POWER DISSIPATION AT +25 °C (W)

A

0.080

B

0.090

C

0.100

D

0.110

E

0.120

F

0.130

H

0.140

M

0.150

N

0.160

R

0.180

PRODUCT INFORMATION

Mounting of Through Hole Components

www.vishay.com/doc?40108

www.vishay.com/doc?40246

SELECTOR GUIDES

Quick Reference Guide

www.vishay.com/doc?40037

Selector Guide

www.vishay.com/doc?49054

Parameter Comparison Guide

www.vishay.com/doc?40033

FAQ

Frequently Asked Questions

www.vishay.com/doc?40110