Right George!!!!
That should be the way to go.
Vladimir
SENTEC Testing Laboratory Inc.
11 Canadian Road, Unit 7.
Scarborough, ON M1R 5G1
Tel: (416) 899-1882
Fax: (905) 882-8812
www.sentec.ca
-----Original Message-----
From: "Wenger, George M." <[log in to unmask]>
Sender: TechNet <[log in to unmask]>
Date: Thu, 28 Jul 2011 06:42:37
To: <[log in to unmask]>
Reply-To: TechNet E-Mail Forum <[log in to unmask]>,
"Wenger, George M." <[log in to unmask]>
Subject: Re: [TN] Missing PTH Barrels in Connector
I wouldn't vote or guess. I would cross section an as-received PTH and one that is suspected as having a missing PTH after soldering as well as an adjacent one next to one that is suspected as having a missing PTH after soldering but is looks to be soldered well and then let the analysis results tell you what the problem is.
Regards,
George
George M. Wenger
Senior Principal Reliability / FMA Engineer
Andrew Corporation - Wireless Network Solutions
40 Technology Drive, Warren, NJ 07059
(908) 546-4531 Office (732) 309-8964 Mobile
E-mail: [log in to unmask]
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Paul Reid
Sent: Thursday, July 28, 2011 7:23 AM
To: [log in to unmask]
Subject: Re: [TN] Missing PTH Barrels in Connector
I would vote for copper dissolution due to lead free HAL. The HASL
process can quickly remove copper in the PTH. Lead free HAL Rework and
your assembly process may advance the condition. A microsection of a
discrepant PTH would answer that question readily.
Paul Reid
Program Coordinator
PWB Interconnect Solutions Inc.
235 Stafford Rd., West, Unit 103
Nepean, Ontario Canada, K2H 9C1
613 596 4244 ext. 229
Skype paul_reid_pwb
[log in to unmask]
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