TECHNET Archives

January 2011

TechNet@IPC.ORG

Options: Use Monospaced Font
Show Text Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
From:
"Cote, Clint (GE Intelligent Platforms, US)" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Cote, Clint (GE Intelligent Platforms, US)
Date:
Tue, 11 Jan 2011 13:20:38 -0500
Content-Type:
text/plain
Parts/Attachments:
text/plain (55 lines)
Yes, standard FR4 multi-layer with soldermask. I asked the Engineer and
he isn't sure because the requirement pre-dates him.  But, he is adamant
that the requirement must be met.

-----Original Message-----
From: Upton, Shawn [mailto:[log in to unmask]] 
Sent: Tuesday, January 11, 2011 11:17 AM
To: TechNet E-Mail Forum; Cote, Clint (GE Intelligent Platforms, US)
Subject: RE: [TN] Trace Widths Entering SMT

Trace width?  Also, is this a standard process type of board, FR4, two
or more layer, with soldermask, normal temp range, etc?

This seems odd.  Is this due to heat wicking away, during soldering?

Did you ask this engineer why this rule?

Shawn Upton, KB1CKT
Test Engineer
Allegro MicroSystems, Inc
[log in to unmask]
603.626.2429/fax: 603.641.5336

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Cote, Clint (GE
Intelligent Platforms, US)
Sent: Tuesday, January 11, 2011 12:58 PM
To: [log in to unmask]
Subject: [TN] Trace Widths Entering SMT

Our Manufacturing Engineer requires us to have a maximum 0.020" trace
entering an SMT pad.  This is regardless of the size of the pad. He will
allow multiple 0.020" traces to the same pad. For instance he will allow
3 0.020" traces into a pad but reject one 0.050" trace. Does this make
any sense?

Thanks,
Clint Cote


______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________

---------------------------------------------------
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.aspx?Pageid=E-mail-Forums for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------

ATOM RSS1 RSS2