LISTSERV - DESIGNERCOUNCIL Archives

DESIGNERCOUNCIL Archives

June 2001

DesignerCouncil@IPC.ORG

	LISTSERV Archives
	DESIGNERCOUNCIL Home
	DESIGNERCOUNCIL June 2001

	Log In
	Register

	Subscribe or Unsubscribe

	Search Archives

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 >>]

Subject:	Re: Plating Thickness Again
From:	Ray Humphrey <[log in to unmask]>
Reply To:	DesignerCouncil E-Mail Forum.
Date:	Thu, 21 Jun 2001 08:32:48 -0700
Content-Type:	text/plain
Parts/Attachments:	text/plain (63 lines)

Paul,

.0008" hole plating is becoming more common.  The reasons are varied and
complicated but have to do with finer-pitched parts, blind vias, etc. used
on PCBs, today.  I.E. Boards with blind vias and/or very fine-pitched pads
will typically start out with 1/4 oz Cu (.00035") and be plated up to 1 oz
(.0014"), giving a maximum surface plating thickness of .001" and a reduced
thickness in the holes.

There are many good resources discussing this on the Web, one of the best
being the Resource Center at Merix, http://www.merix.com/main_res.html.  You
can also find many references and links by simply doing a Web search for
'minimum hole plating' (I found 3,904 of them!).

Best regards,

Ray


-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]]On Behalf Of Paul
Noonan
Sent: Thursday, June 21, 2001 1:48 AM
To: [log in to unmask]
Subject: [DC] Plating Thickness Again

Does anyone out there think it would be unreasonable to ask for 1oz, .0014"
hole plating thickness for multilayer boards? I have been fed so many
different stories from different board shops, one in particular is saying
that people only ever ask for 20 Microns, .0008" and that this is adequate ,
other board shops are telling me that they always provide thicker plating
than this.
Any Comments

Paul Noonan
PCB Designer

----------------------------------------------------------------------------
-----
DesignerCouncil 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 DesignerCouncil.
To set a vacation stop for delivery of DesignerCouncil send: SET
DesignerCouncil 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
----------------------------------------------------------------------------
-----

---------------------------------------------------------------------------------
DesignerCouncil 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 DesignerCouncil.
To set a vacation stop for delivery of DesignerCouncil send: SET DesignerCouncil 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

LISTSERV.IPC.ORG