Subject: | |
From: | |
Reply To: | |
Date: | Tue, 13 Nov 2007 07:59:20 -0600 |
Content-Type: | text/plain |
Parts/Attachments: |
|
|
IPC J-STD-001D page 17, last paragraph of 6.1.3 - connector leads are
exempt from the maximum length requirement provided that they do not
violate minimum electrical spacing at the next higher assembly level.
Gary Camac
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ioan Tempea
Sent: Tuesday, November 13, 2007 7:49 AM
To: [log in to unmask]
Subject: [TN] TH pin clipping and class 3
Dear Technos,
I am having a class 3 board, with hollow pin TH connectors. To get them
within the 0.059in spec we need to trim the pins, but being hollow they
deform, cracking the solder, hence tons of touch-up.
I have 2 questions:
* What is the rationale behind requesting shorter pin
protrusions for class 3 vs. class 2
* My wishful thinking lights a pale souvenir in my mind telling
that there is a MIL spec that forbids pin clipping. Am I right, or is it
only wishful thinking?
Thanks,
Ioan
---------------------------------------------------
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
-----------------------------------------------------
---------------------------------------------------
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
-----------------------------------------------------
|
|
|