Leland
This problem is categorised as a Process Indicator, for Class 3 IPC-610, so
as long as you log it & find the root of the problem, they can be accepted.
Reworking them could cause reliability problems, so I always suggest that
they are left just so.
This can cause performance issues in RF or Mircrowave circuits, but for low
frequency operation, would not be a problem.
I suggest you change your policy, before you end up with land or component
damage or weakness.
If they are being loaded by hand, then a word with your operators would be
wise, but this is a common problem with machine placement.
Regards
Paul
Paul Pidgeon
(Training Director)
STEM 'Standards Training in Electronics' Manufacture'
Bristol. UK
Tel: +44 (0)7912 077445
mailto:[log in to unmask]
www.stemtraining.co.uk
This e-mail is intended for the addressee only and may contain confidential,
proprietary or legally privileged information. If you are not the intended
recipient of this e-mail, you should notify us immediately and delete it.
You should not copy, print, distribute, disclose or use any part of it. We
cannot accept any liability for viruses transmitted via this e-mail once it
has left our system.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Leland Woodall
Sent: 31 July 2008 18:12
To: [log in to unmask]
Subject: [TN] Repair Need for Inverted Chip Resistors
TechPros,
Can anyone tell me if there's a reliability concern with allowing chip
resistors to be mounted upside down? Our current policy requires that
we repair these, and I feel that to be unnecessary.
IPC-A-610D shows this to be an acceptable condition on all classes of
product, and our customer has no specific contractual requirement.
I'd like to try to change this policy at our facility, and welcome any
commentary you might have on the subject.
Thanks in advance for your help,
Leland Woodall
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
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
-----------------------------------------------------
No virus found in this incoming message.
Checked by AVG - http://www.avg.com
Version: 8.0.138 / Virus Database: 270.5.10/1584 - Release Date: 31/07/2008
12:00
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
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
-----------------------------------------------------
|
