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Reply To: | TechNet E-Mail Forum. |
Date: | Thu, 11 Oct 2001 10:49:52 +0800 |
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If you know the plating thickness in the through hole, calculate the cross
sectional area of the plating using
Pi*r1^2 - Pi*r2^2 where Pi = 22/7 or 3.1428, r1 is the drill hole radius
and r2 is the finished hole radius. Then just look up what the current
carrying capacity of copper is in Amps per unit of cross-sectional area in
cm^2 and multiply the two figures together.
Peter Duncan
Geoff Layhe
<glayhe@LAMAR To: [log in to unmask]
-UK.CO.UK> cc: (bcc: DUNCAN Peter/Asst Prin Engr/ST
Sent by: Aero/ST Group)
TechNet Subject: [TN] current carrying capacity of PTH
<[log in to unmask]
ORG>
10/10/01
09:40 PM
Please
respond to
"TechNet
E-Mail
Forum."
Hi All,
Does anyone have information such as formula, graphs etc regarding current
carrying capacity of plated through holes?
TIA
Geoff Layhe
www.lamar-uk.co.uk
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