I would say that the energy contained in 0.16 A.s would cause no damage 
to a PCB: may be bad for semiconductors, though! We used to soak-test 3 
close-spaced rows of PTHs, interconnected by 0.3 mm tracks, of diameters 
down to 0.4 mm drill size, with 6 A for 30 minutes to ensure integrity 
and rarely got a failure. However, these test coupons did get warm (I 
would guess 50 - 60°C from memory). In your case, there was not enough 
time for the conductor to heat up sufficiently to cause damage, even on 
HD structures.

Brian

Pete menuez wrote:
> All:
> 
> We had an assembly in test and one of the technicians accidently probed a
> pad and shorted the probe to ground.  This drew about 1.6 amps (calculated)
> for about 100 miliseconds.
> 
> Is there a chart, guideline, calculation or something that will tell me 
> what
> damage would occur  to the internal trace/laminate with such an event.
> 
> Thanks in advance,
> 
> Pete
> 
> ---------------------------------------------------
> Technet Mail List provided as a service by IPC using LISTSERV 1.8e
> To unsubscribe, send a message to [log in to unmask] with following text in
> the BODY (NOT the subject field): SIGNOFF Technet
> To temporarily halt or (re-start) delivery of Technet send e-mail to 
> [log in to unmask]: SET Technet NOMAIL or (MAIL)
> To receive ONE mailing per day of all the posts: send e-mail to 
> [log in to unmask]: SET Technet Digest
> Search the archives of previous posts at: http://listserv.ipc.org/archives
> Please visit IPC web site 
> http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional 
> information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 
> ext.2815
> -----------------------------------------------------
> 

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------