John,

IPC-6011 covers that in paragraphs 1.5 and 3.5 where there are allowances
for agreements between user and vendor.  If a board is prone to lifted
lands, and the end user agrees to this condition, a statement should be made
on the procurement documentation (master drawing) to that effect; otherwise
eventually every paragraph in 6012 would have that statement.


Best Regards,

Russell S. Shepherd
Laboratory Manager
Microtek Laboratories
Phone: (714) 999-1616
Fax: (714) 999-1636
Email: [log in to unmask]

 -----Original Message-----
From:   John Perry [mailto:[log in to unmask]]
Sent:   Friday, September 27, 2002 2:40 PM
To:     [log in to unmask]
Subject:        [IPC-600-6012] Proposed Change to Acceptance Criteria for
Lifted Lands

Colleagues,

IPC would like a task group disposition on the following comment for the
IPC-6012 B Revision effort.

Ted Edwards of Dynaco Corporation has proposed rebuilding paragraph 3.3.4 in
the IPC-6012B 2nd Working Draft relative to allowances for Lifted Lands to
read:

When visually examined in accordance with 3.3, the finished board shall not
exhibit any lifted lands unless agreed upon between user and supplier.

Reason for Recommended Change:  On thick boards with thick plating
requirements, if a HASL finished is used there almost always exists lifted
lands and this statement would mean that they would all have to be scrapped.

Your reply is appreciated.

Regards,

John Perry
IPC