Agree, so long as both layers of copper are continuous from the hole onto the surface....

Cliff
Clifford R. Maddox
Engineering Specialist
Materials, Processes, and Physics
The Boeing Company
5301 Bolsa Ave., Huntington Beach, CA  92647
MC H013-C335

714-896-3241 (Office)
714-287-2886 (Mobile)
714-762-7672 (Fax)  

 

-----Original Message-----
From: IPC-600-6012 [mailto:[log in to unmask]] On Behalf Of Chris Mahanna
Sent: Thursday, December 31, 2009 7:27 AM
To: [log in to unmask]
Subject: Re: [IPC-600-6012] double-layer copper wrap

Roberto,
Two or more layers of plating (that are not separated) are the same as one.  Happy New Year!
Chris


Chris Mahanna
Technical Manager
Robisan Laboratory Inc.
6502 E. 21st Street
Indianapolis, Indiana 46219
317-353-6249



-----Original Message-----
From: IPC-600-6012 [mailto:[log in to unmask]] On Behalf Of Roberto Tulman
Sent: Thursday, December 31, 2009 1:40 AM
To: [log in to unmask]
Subject: [IPC-600-6012] double-layer copper wrap

Hello all!

The copper wrap requirement for filled holes asks for a continous copper from the hole to the pad. This wrap should be at least of a certain thickness.
I would like to have your oppinions about the acceptability of this wrap if it is built of two layers.
For example if 12 microns thickness is required, we built two 6 micron layers.
Happy New Year !

Roberto Tulman, CTO
Eltek Ltd.
tel. +972-3-9395004