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Reply To: | TechNet E-Mail Forum. |
Date: | Wed, 7 Mar 2001 11:57:16 -0500 |
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According to IPC-SM-782, from around 3-4% misses to less than 1%.
Reference: Figure 5-2, pg 46.
Also, see section 5.7.1, para. 5. Square pads would further reduce false
probing.
Roger M. Stoops, C.I.D., PCB Designer
Trimble
Engineering and Construction Division
5475 Kellenburger Rd.
Dayton, OH 45424-1099 USA
Ph: +01 937.233.8921 or +01 937.233.4574 ext 288
Fax: +01 937.233.7511
Lothar Thole
<Lothar.Thole@V To: [log in to unmask]
SL.COM.AU> cc:
Sent by: Subject: [TN] 32mil vs 40mil
TechNet
<[log in to unmask]
G>
03/07/01 03:02
AM
Please respond
to "TechNet
E-Mail Forum.";
Please respond
to Lothar Thole
What reduction in false probing could be expected if 32mil test pads were
replaced by 40mil pads on a 900 node HP3070 fixture?
Lothar Thole
=======================================================
Lothar Thole
Manufacturing Manager
Vision Systems - ADPRO
Second Avenue, Technology Park,
MAWSON LAKES, SA 5095,
AUSTRALIA.
tel: +61-8-8300-4747 (direct)
tel: +61-8-8300-4400 (switch)
fax: +61-8-8300-4422
mobile: +61-407-166-600
email: [log in to unmask]
web site: www.vsl.com.au/adpro
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