Hi Vladimir,

As I know it is Pd.
regards

Vladimir Igoshev schrieb:

>Hi Waclaw,
>
>Do you know what material (Pd or Ru) your board supplier uses to deposit electroless Ni?
>
>Vladimir Igoshev,
>Research in Motion
>
>Voice: (+1) 519-888-7465, ext. 5283
>Fax: (+1) 519-886-0863
>E-mail: [log in to unmask] <mailto:[log in to unmask]>
>
>
>-----Original Message-----
>From: karpinski [mailto:[log in to unmask]]
>Sent: Wednesday, February 18, 2004 4:15 PM
>To: [log in to unmask]
>Subject: [TN] Ni/Au solderability on kapton
>
>
>Recently we have solderability problems with Ni/Au kapton flex boards
>(0,1 µm Au, 3 µm Ni, 35m Cu).
>We have produced and assembled large number of boards.
>On 10 % of the boards we observe interconnection failures after final
>assembly of the pcbs. If  the suspected solder joints are lightly
>stressed , the connections are easily broken, leaving an open circuits.
> It is  easy to peel  these parts with solder material  from the boards.
>The pads below the removed parts are discolored dark gray and are sleek .
>Some times the handsoldering of the broken joins was successful but
>after small strain the joints  broke again.
>Additional vapor phase soldering  did not improved the the strength of
>the joints.
>This is new problem for us. Does anyone have any experience with this?
>How to rework the boards? How to determine when a board should be
>reworked or
>scrapped? What about reliability issues? Latent failures?
>I would appreciate your help very much
>  regards
>
>--
>Waclaw Karpinski
>I. Physikalisches Institut
>RWTH Aachen
>D - 52074  Aachen
>
>---------------------------------------------------
>Technet Mail List provided as a service by IPC using LISTSERV 1.8e
>To unsubscribe, send a message to [log in to unmask] with following text in
>the BODY (NOT the subject field): SIGNOFF Technet
>To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
>To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
>Search the archives of previous posts at: http://listserv.ipc.org/archives
>Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
>-----------------------------------------------------
>
>---------------------------------------------------
>Technet Mail List provided as a service by IPC using LISTSERV 1.8e
>To unsubscribe, send a message to [log in to unmask] with following text in
>the BODY (NOT the subject field): SIGNOFF Technet
>To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
>To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
>Search the archives of previous posts at: http://listserv.ipc.org/archives
>Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
>-----------------------------------------------------
>
>
>
>

--
Waclaw Karpinski
I. Physikalisches Institut
RWTH Aachen
D - 52074  Aachen
Sommerfeldstr 14, Turm 28
Tel.: +241 802 7181
Fax.: +241 802 2623
Mobil: 0049 173 70 22 548

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------