Project: Knight Rider style sweeping light.

bertus

Joined Apr 5, 2008
22,270
Hello,

The 2N3904 has a rated Ic of 200 mA.
( 2N3904 SI-N 60V 0.2A .35W 300MHz )
The BC546 has a rated Ic of 100 mA.
( BC546C SI-N 80V 0.1A 0.5W )

If you are only driving 1 or 2 leds, it will be fine.
If you want to drive more leds, a BC337 would be a better choice.
( BC337-16 SI-N 50V 0.8A 625mW 150MHz )

Bertus
 
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