From our transistor database:

BC548 eqv. BC168, BC183, BC238, 2N5818
BC639 eqv. 2SD667, 2N3700...3701, 2SC2383
BC640 eqv. 2SB647, 2SA1013

Best Wishes

Steve

Peter Crowcroft wrote:

> >From:    "James Newton. Admin 3" <jamesnewton@PICLIST.COM>
> >Subject: [PIC]: Transistors for pocket programmer.
> >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
>
> These are standard, readily available in Hong Kong. I use BC547's by the
> thousands. KEC or Philips. My buying price is $US0.0167  each.
>
> BC639/40 are about 3 times that.
>
> 2. Ceramic resonators - someone else was asking - are generic, also easy to
> get here with 2 caps built in. Price $US0.064 is what I buy them for.
>
> regards,
>
> Peter Crowcroft
>             DIY Electronics (HK) Ltd
>       PO Box 88458, Sham Shui Po, Hong Kong
> Factory: voice 852-2304 2250    Fax: 852-2729 1400
>          M/F, 97 Fuk Wa Street, Sham Shui Po
> Home: voice 852-2720 0255          Mobile: 6273 2049
> Web:  http://kitsrus.com           Email: peter@kitsrus.com
> -------------------------------------------------------------
>
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