If you look on our web site, you will find two articles. One is on
trace/temp characteristics in general, the other is a reprint of an article
from PC Design magazine that directly relates to your fusing current question.

http://www.ultracad.com

Doug Brooks







At 04:08 PM 5/24/99 -0500, you wrote:
>Hi,
>
>I have a customer who has an application that has a requirement for High
>Current Pulses.  Can any one point me into the right direction for the
>following:
>
>FOR A GIVEN TRACE WIDTH AND THICKNESS, HOW MUCH ENERGY CAN A TRACE HANDLE
WHEN
>EXPOSED TO A SINGLE 100 MICROSECOND WIDE PULSE?
>
>ALTERNATELY, IF THE TRACE IS TREATED LIKE A FUSE, WHAT IS THE FUSING
>CHARACTERISTICS?
>
>WHAT IS THE I (superscript: 2)T RATING?
>
>DOES AN ASSUMPTION HAVE TO BE MADE ABOUT THE TRACE LENGTH ?
>
>THE TRACES IN QUESTION ARE LIKELY GOING TO BE INTERNAL TRACES THAT ARE 20
MILS
>WIDE AND 2 OZ COPPER.  IF DATA IS AVAILABLE, IT WOULD BE HELPFUL TO HAVE A
MORE
>GENERIC RESULT.
>
>Thank you,
>Ed
>
>
>Ed Blasco
>Limat Graphics Inc.
>128 E. Liberty Street
>Danbury, CT 06810
>203-798-9771 ext.209
>fax:203-790-5666
>
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.
****************************************************
Doug Brooks, President              [log in to unmask]
UltraCAD Design, Inc.           http://www.ultracad.com

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