Wide, too wide, at 25 degree C rise, 3.85 inches. 10 degree C rise - 6.7
inches.

Not advisable, especially internal. You want to get the heat OUT of the
board not into it. The Z axis thermal expansion is not acceptable, will most
likely lead to failure.

 

Mario Irigoyen

-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of Johnson,
Joseph SEA
Sent: Wednesday, April 08, 2009 10:41 AM
To: [log in to unmask]
Subject: [DC] 30 Amp Fault Condition

 

OK Guys..  Here's a good one for you. 

If you have an internal trace that is 0.5 oz. copper..   How wide does the
trace have to be to hold 30 amps for 2 minutes without burning up the board
or loosing the trace.  Any ideas?

Best regards,
Joseph Johnson
Sr. PCB Design Engineer, CADIM Coach - JOCY
=============================
SIEMENS
ONE INTERNET PLAZA
PO BOX 4991
JOHNSON CITY TN 37602-4991
=============================
* [log in to unmask]
* (423) 262-2037
* (419) 818-6308 - eFax
* (423) 262-2174 

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