Guys, I'm not good with analog electronics...

...Transistor parameters are Greek to me.

I'm trying to source parts for Tony Nixon's pocket programmer so that people
can order in one shot from digikey or mouser. What I have so far is at
http://www.piclist.com/techref/microchip/ppord.htm
At this point, the total is looking at about $75 just for the parts. But
there are a lot of cases of having to buy 10 when you need 1 because Digikey
has a minimum order quantity. And their prices are high on some types of
things. I'll eventually re-source those components through Mouser the same
way and then split the form into two according to where the best price is.

Once I get all the parts sourced, if I can do it so they match Tony's
original boards, I'll just run a batch of the original PCB layout. If I
can't match them or if there is a significant price savings to be had by
doing a new layout, I'll do a new layout. The boards will probably run about
$15 to $20 so I think we can get to a final price of less than $100 easily
and maybe as little as $75.

Hopefully, by April, the pocket will again be available as a kit. A friend
of mine is interested in providing assembled and tested units, so that may
also become an option. In any case, a small royalty payment will go to Tony,
although he has not asked for one (and he has given me permission to make
them here).

But at this point, I'm really having a hard time with these transistors and
I'd really appreciate some help. The BC numbers are European I guess, and
I'm told the specs are not unusual, but I need to know what Digikey or
mouser (or other) part number is a good replacement. All the cases are the
little TO-92's.

BC548 NPN Vce30 Vcb30 Ic 100mA Hfe 110-800 @2mA    500mW
BC639 NPN    80   100    1A        40-250  @150mA  1W
BC640 PNP  as per BC639

Thanks in advance!

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