TECHNET Archives

May 2001

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:
Nancy Trumbull <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 9 May 2001 10:08:17 -0400
Content-Type:
text/plain
Parts/Attachments:
text/plain (35 lines)
Hi Bob,

I have not seen an answer yet so I'll give you my 2 cents .
From my 20 years experience only no real data. However I was a IPC 610 B Instructor and will go in July for re-certification. And my understanding is that the most reliable lead protrusion is going to be one that is no smaller or larger than needed.  Most lead protrusion will be 1. to 1.5mm in length.  The longer the lead protrusion the more possibility there is in causing a defect.  As you assemble  or handling during process or possible damage during usage if there is vibration / movement .  And as you know if  by change  the joint is disturb during one of those than you could have possible damage.  So being that Class 3 is the most critical the more perfect it will need to be.
Hope I helped
Nancy T.

>>> [log in to unmask] 05/07/01 12:57PM >>>
Please reference Section 5.2.7.1 -  Table 5-2

What is the rationale on the (L) max numbers for Class 2  (2.5mm) and Class
3 (1.5mm) ???

Bob Hawkins

---------------------------------------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8d
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 delivery of Technet send the following message: SET Technet NOMAIL
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail 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
---------------------------------------------------------------------------------

---------------------------------------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8d
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 delivery of Technet send the following message: SET Technet NOMAIL
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail 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