Hi Dick,

You could always sacrifice a panel and compare those pths to those on your
regular coupon for validation.  We always get a slightly different plating
thickness from our flash tank depending on the coupon's location on the
panel.  The plating thickness is also consistent with which bar was used
(front or back) and the direction it faced in the plating tank, shared
middle anode bar.  The variations haven't been a major problem, usually, it
is within spec.

Hans


~~~~~~~~
Hans M. Hinners                                 WR-ALC/LYPME Bldg. 640
Materials Engineer                                      380 Second Street,
Suite 104
Manufacturing Eng. Sec.                         Robins AFB GA 31098-1638
912-926-1970 (Voice) 468 - 1970 (DSN)   912-926-7974 (Fax)
[log in to unmask]



> -----Original Message-----
> From: Richard Desrosiers [SMTP:[log in to unmask]]
> Sent: Friday, October 29, 1999 05:55
> To:   [log in to unmask]
> Subject:      [TN] Plating Coupons
>
> Technetters
>
> Has anybody out there in the Fab shops found a reliable test coupon, and
> strategy,  that will accurately represent copper thickness on the actual
> board.
>
> Thanks
> Keep Smiling
>
> Dick Desrosiers
> Director of Manufacturing
> Harbor Electronics
> 3021 Kenneth St
> Santa Clara, CA  95054
> 408-988-6544
> 408-406-3729  (cell)
> [log in to unmask]
>
> ##############################################################
> TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
> ##############################################################
> To subscribe/unsubscribe, send a message to [log in to unmask] with
> following text in
> the body:
> To subscribe:   SUBSCRIBE TECHNET <your full name>
> To unsubscribe:   SIGNOFF TECHNET
> ##############################################################
> Please visit IPC web site (http://www.ipc.org/html/forum.htm) for
> additional
> information.
> If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
> 847-509-9700 ext.5365
> ##############################################################

##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
the body:
To subscribe:   SUBSCRIBE TECHNET <your full name>
To unsubscribe:   SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
847-509-9700 ext.5365
##############################################################