[sdiy] UA726 clone possible?

[Mike Gorman]

I've just checked on the Micross site and they have the LS318 in SOT23 and TO71 packages as well as SOIC and PDIP, so this device may still fit in a reasonably small package.

Regards

Mike

On 9 Sep 2015, at 14:46, Jarno Verhoeven at ziggo.nl <jarno.verhoeven at ziggo.nl> wrote:

> You can only get LS318 in SOIC, ideally you get something in a smaller case, for
> it to fit the TO-can packaging.
> There's BCM847bs/ds, but the matching isn't as good as LS318 (they do have them
> in PNP, and NPN/PNP (the latter not matched)). Does anybody know of similar
> parts, like DMMT3904?
> 
> Jarno.
> 
> 
> 
>> Op 9 september 2015 om 15:21 schreef Tom Bugs <admin at bugbrand.co.uk>:
>> 
>> 
>> Sorry, please reply to this one so it has a new thread title:::
>> 
>> ********************************
>> 
>> I wondered before why no-one seems to have done a clone of the ua726.
>> 
>> Doesn't *SEEM* all that complex?!
>> A nice matched pair (eg LS318) is the main core.
>> 6 transistors (I presume general purpose?), 2 x 6V2 zeners and 6
>> standard resistors.. - those parts being for the heating element.
>> 
>> Get the pin placement right, encapsulate it in goo..
>> 
>> What am I wrong on?
>> 
>> [I don't want to fully take on such a project, though could potentially
>> do a design up for initial testing with a view to someone running a
>> production in a friendly open-source-ish manner]
>> 
>> Tom
>> 
>> 
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