-- Good day!
________________________________________ Christopher R. Carlen Principal Laser&Electronics Technologist Sandia National Laboratories CA USA snipped-for-privacy@BOGUSsandia.gov NOTE, delete texts: "RemoveThis" and "BOGUS" from email address to reply.
Hi...
How many ampere can safely go through a PCB track of 1 millimeter width and
Thank you..
How long is the trace? That sounds like 1 oz cu which is 0.50m ohms/square, so 10mm long would be 5.0m ohms. If the ends points are cooled by vias, pads or such then the current capability can be quite high, like >5.0A. If the length gets greater than 4.0 cm, treat it as a long lead and go to the chart that everyone else will point out to you. Don't let the smoke out. Cheers, Harry
Shoot for 600 circular mills per amp. I leave the area calculations for the student.
35 um copper is '1oz' btw. You need the old fashioned terminology on that page.
Graham
Using my trusty copy of PCBTEMP from UltraCAD, 1 oz cu, 0.040 inch, external, 10C rise is 1.6A, 21mVolt per inch. Internal track: 10C rise is 1A, 12.9mVolt per inch
Both cases, effective resistance is 12.88milliohm per inch
Much depends on how long the track is if you want to distribute power.
Cheers
PeteS
Thanks All.
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