but the thin wire soldered into pads which i suggested should be
repeatable and consistent, no ?
ds
_______________________________________________________________________
Integrated Controls, Inc. Tel: 415-647-0480 EXT 107
2851 21st Street Fax: 415-647-3003
San Francisco, CA 94110 www.integratedcontrolsinc.com
[EMAIL PROTECTED] wrote:
Though it's conceptually a simple issue, the variations in manufacturing
can lead to uncertainty in the operation of such a trace. Simply
calculating track width (of an ideal copper clad board) for 1A
continuous is insufficient for the intended use and a potential
liability...
...I could swear you were around for the lengthy discussions we had on
this subject years ago.
aj
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Butcher, Bob
Sent: Friday, November 04, 2005 12:30 PM
To: [email protected]
Subject: [PEDA] How do I design a fusible link into a PCB?
I want to add a narrow circuit trace to a PCB design to act as a fuse.
It should operate with 1 Amp of current continuously and open
if the current exceeds a higher value (2-5 Amp). This project
is very cost sensitive and a 15 cent fuse may be too much. I
have the guidelines for conductor heating vs cross section,
and it appears the conductor would need to be less than 10
mils wide on a 1 Oz copper board. Does anyone have experience
with this subject?
Bob Butcher
[EMAIL PROTECTED]
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