Yes thankyou Steve, we had been pointed to this one by SGS themselves,
unfortunately although
it will do the same job (if not better) it has a higher capacitance
(double) and therefor causes problems
elsewhere in the system that they fit into.

Any other replacements that we have found are on very  long lead times,
we have an alternative part arriving
this Friday, but its in a slightly different footprint & will require
the use of the "fudge factor" when placing.
Although it may be OK on most boards, there is one where we cannot place
them differently without shorting
so I am (doing the buyers job) looking elsewhere for some until we can
get the boards modified.....

Ta muchly - Matt

>-----Original Message-----
>From:  [log in to unmask] [SMTP:[log in to unmask]]
>Sent:  Tuesday, December 14, 1999 7:55 PM
>To:    Matthew Lamkin; [log in to unmask]
>Subject:       Re: [TN] Search for obsolete components SM4T36CA Transils ?
>
>In a message dated 12/14/1999 9:11:44 AM Central Standard Time,
>[log in to unmask] writes:
>
><< HI there everyone, I've been pulling my hair out for the last few days,
> as
> we have several products designed to use a ST/SGS-Thompson part that
> appears to have
> gone obsolete since we last purchased any.
>
> Only we didn't know & are now searching for any of these that are going
> spare anywhere in the world.
>
> The part is a "Transil"  Bi-directional surge protector type SM4T36CA.
> Any equivalent parts that have been suggested have a different footprint
> (this part uses SOD6.).
>
> We have searched the www & exhausted all our suppliers, so now I'm
> reduced to begging on the streets (well TechNet at least!).
>
> Can anyone point me in the right direction?
>
> Tia
> Matthew Lamkin
> Printed Circuitboard Draughtsman
> Protec Fire Detection PLC.
> Protec Hse, Churchill way,
> Nelson, Lancashire.
> England UK.
> Tel 01282 717171
> Fax 01282 717273
> Email [log in to unmask] >>
>
>Hi Matthew!
>
>I did a "Dogpile" search and found this:
>
>http://us.st.com/stonline/index.htm
>
>At the upper left corner in the search box type in: SM4T36CA  and it'll take
>you to a page that has the data sheet for the part in *.PDF format. But when
>you said it was obsoleted, I called their US office and you are right, it is
>obsoleted...bummer.
>
>Can you use a 600W part? The SM6T36CA is the same part, but 600W...it goes on
>the same footprint as the SM4T36CA...sorry couldn't be more help...
>
>-Steve Gregory-

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