On 13-Feb-12 21:39, Dwayne Reid wrote:
> At 12:15 PM 2/13/2012, Spehro Pefhany wrote:
>
>> Not quite sure what you're asking for- leaded SMT or through-hole?
>>
>> MMBT4401 is the SOT-23 equivalent of the 2N4401.
>
> The existing board design uses MMBT4401 devices.  Now I need to add
> another transistor to the board and its hard to work with the SOT-23
> packaged MMBT parts.  Much easier to stretch a leaded transistor to
> reach the various nodes.
>
>> Those thin through-hole packages are/were mostly the province of
>> Japanese makers, so if you really want such a thing, try 2SCxxxx
>
> Yeah - the DTC parts I currently use are Japanese-made.  But I didn't
> have any part numbers handy and a quick Google search didn't suggest
> any suitable devices.
>
>
>> Eg. 2SC1741 (2mm thin)
>
> Excellent!  I'll start with that.

There are also Zetex E-line transistors, similar to TO92 but 0.090" thick.

Djula


>
>
>> But most of that stuff is probably getting harder and harder to find,
>> so I'd be very reluctant to commit to it in a new design. The TO-92
>> will be around for a very long time, as will SOT-23.
>
> This is to fix a design change.  The next board version will include
> the extra SMD devices.  But I've got a bunch of stuffed boards here
> that would otherwise be scrap.
>
> Many thanks!
>
> dwayne
>
--=20
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