[PCB_FORUM] Re: bead probe
- From: Jean Bratton <jean.bratton@xxxxxxxxxxxxxx>
- To: "icu-pcb-forum@xxxxxxxxxxxxx" <icu-pcb-forum@xxxxxxxxxxxxx>
- Date: Fri, 27 Apr 2012 12:51:01 +0000
I have a file called Bead Probe Handbook which came from Agilent, and also a
paper written by Kenneth_parker@xxxxxxxxxxx<mailto:Kenneth_parker@xxxxxxxxxxx>.
I would try their website to see what you can find. It's been a while since I
got these so I'm not sure exactly what the source was. If you have external
routing, especially RF, they're wonderful. You just need to be sure you leave
enough space between components to fit the probe.
Jean Bratton
Senior PCB Designer
Freedom CAD Services, Inc.
Phone: 603-864-1349
Skype: jean.bratton
Email: jean.bratton@xxxxxxxxxxxxxx<mailto:jean.bratton@xxxxxxxxxxxxxx>
Visit us at http://www.freedomcad.com<http://www.freedomcad.com/>
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Dave Seymour
Sent: Friday, April 27, 2012 8:40 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: bead probe
Kathy,
Do you have a link describing bead probe technology?
Thx
Dave
Dave Seymour
Ixia
www.ixiacom.com<http://www.ixiacom.com>
919.267.4840
From:
icu-pcb-forum-bounce@xxxxxxxxxxxxx<mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx>
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]<mailto:[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx]>
On Behalf Of Kathleen Descoteaux
Sent: Friday, April 27, 2012 7:22 AM
To: icu-pcb-forum@xxxxxxxxxxxxx<mailto: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<mailto:eileen.ong@xxxxxxxxxxxxxx>
To: icu-pcb-forum@xxxxxxxxxxxxx<mailto: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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