TECHNET Archives

October 2002

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:
Guy Ramsey <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 30 Oct 2002 08:38:18 -0500
Content-Type:
text/plain
Parts/Attachments:
text/plain (46 lines)
The standard is reasonable. Perhaps your supplier is attempting to
maintain the specified thickness across the board, which is not
required. The thickness is to be measured on a flat unencumbered portion
of the board or on a coupon processed with the board.

> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Colin Weber
> Sent: Tuesday, October 29, 2002 10:34 PM
> To: [log in to unmask]
> Subject: [TN] IPC-SM-840
>
>
> Hi Folks,
>
> Our company has specified; IPC-SM-840, CLASS T, 0.001-0.002"
> THICK. on each board we have had manufactured for the last few years.
>
> I just received notice from our current manufacturer that
> they cannot consistently meet this requirement for 1 to 2
> thou thickness, and want to produce a thickness at a minimum
> of 0.4 thou.
>
> My questions are;
> 1. Is this standard considered old and I should be looking at
> specifying something else? 2. Are there any repercussions in
> changing to the suggested reduced thickness?
>
>
>
>
> Regards,
>
> Colin Weber
>

---------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8e
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/html/forum.htm for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------

ATOM RSS1 RSS2