At 09:30 PM 5/6/2003 -0500, you wrote:
>Since I'm on an SO-components kick now, I'm considering replacing regular
>TO-92 switching transistors (for the common on 7-seg displays) on a project
>with some SOT-23 or similar parts... still not PCB'ed yet.  I just ran into
>this however, on digikey's site...  part # BCR133E6327.
>This is a transistor w/2 integrated bias resistors.  Would be really nice if
>if could save me from using separate base current-limiting resistors, but
>unfortunately they're 10k resistors.
>
>Any idea if there are any similar devices with a proper current-limiting
>resistor on the base?  I need to drive about 200mA max from a pic pin.  This
>is a common enough purpose that I've got my hopes up.

Both the Infineon and the similar *dual* Matsushita parts are limited to
100mA.

There are gobs of these things available from various (mostly Japanese)
suppliers, but availability in small quantities isn't great. I've used
500mA types in SC-59.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com

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