BC847BS (was Re: Components with potential)

[Ian Fritz]

Thanks for the timely warning. I looked at the Zetex data sheet for the
ZDT717. They call this a "dual", but it probably is a double. I think
this because they specify thermal characteristics for "any single die
on" and "both die (sic) on equally". Also no V_be matching is specified.
They don't come right out and say it though.

  Ian

Tim Godfrey wrote:
> 
> At 09:01 AM 9/25/98 +0100, you wrote:
> >Unfortunately the datasheets don't say much. They say "closely matched
> current
> >gain" but nothing about Ube or any figures. I suppose somebody have to buy a
> 
> I wanted to point out that there are parts available that contain two
> discrete, independent transistors in one package. I ran across some like
> this from ROHM a few years ago when I was looking for a real matched dual
> PNP to make a current mirror. ROHMs data sheet was similarly nebulous, so I
> ended up calling the factory and they confirmed that the package contained
> two separate transistor chips. (their parts are at
> http://www.rohm.co.jp/products/shortform/21trstr/trstr5.html#1)
>