[SI-LIST] Re: Can a thin PCB trace be used as a reliable fuse

There are two parts to the answer:

A. Yes, it can. See our article on this on our web site "Fusing Current; 
When Traces Melt Without a Trace!" at
http:\\www.ultracad.com

B. Almost no-one suggests that a board can be repaired after a trace melts. 
So a trace fuse is best used for catastrophic protection only.

That's mu two-cents worth.

Doug Brooks



At 03:16 AM 8/25/2004, you wrote:
>Hi Masters,
>
>This is really not an SI related query, but comes under electronics design.
>My query is this. Can a thin PCB trace be used as a reliable fuse. I have a
>real estate problem on my PCB & require 4 fuses with current threshold of
>6A. I searched for the components & found they too huge to use on the PCB.
>So thought I can use trace as fuse!!
>If it is possible is there any paper that has this explained?
>
>Please help.
>
>Thanks,
>
>Tilak
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