[PCB_FORUM] Re: bead probe
- From: Kathleen Descoteaux <kathy_descoteaux@xxxxxxxxxxx>
- To: <icu-pcb-forum@xxxxxxxxxxxxx>
- Date: Fri, 27 Apr 2012 08:50:29 -0400
Dave.. I do have some docs but I can't share them due to confidentiality
agreements. But.. check this out:
http://www.home.agilent.com/agilent/product.jspx?cc=US&lc=eng&ckey=1730763&nid=-33994.911254.00&id=1730763&cmpid=zzseebeadprobe
It has a document library, I bet you can find some good stuff in there.
Best wishes..
Kathy Descoteaux
Cell 603-682-9228
From: dseymour@xxxxxxxxxxx
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: bead probe
Date: Fri, 27 Apr 2012 12:39:54 +0000
Kathy,
Do you have a link describing bead probe technology?
Thx
Dave
Dave Seymour
Ixia
www.ixiacom.com
919.267.4840
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]
On Behalf Of Kathleen Descoteaux
Sent: Friday, April 27, 2012 7:22 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: bead probe
Hi Eileen..
Yes, I've done several designs using beadprobes. They are a PCB designers dream
:-)
The bp is via.. the one I am using has 20x5 etch, soldermask and solderpaste
pad. In addition, I use the filmmask layer to add another pad, 25x7, which is
used by the fabricator for a mask to apply the beads. These sizes were used for
100 mil spaced bead probes.
I placed these guys right on super high speed diff pairs, top and bottom layers
to eliminate the need for via stubs.
Agilent has some documentation available for recommended sizes.. as like
standard testpoints, the size of the bead probe will vary with the size of the
test head.
I would suggest that you contact your testhouse to get their specific
requirements... best of luck!
Kathy Descoteaux
From:
eileen.ong@xxxxxxxxxxxxxx
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] bead probe
Date: Fri, 27 Apr 2012 14:01:11 +0800
Hi,
Any one has board design for Bead probe?
What are the size for
padstack, solder mask/paste mask and clearance set for bead probe ?
Is this being added as a part or Via and if it’s added in schematic.
Thanks.
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