Is 25mA enough to fully saturate two 2N2222 transistors?

Question

I need to be able to fully saturate two 2N2222 transistors with a +5v 25mA source. Is this enough? Or could recommend another way around this? If you want a schematic contact me.

Answer 1

More details are needed, but saturation is a fully turned on Collector to Emitter junction which will depend on the current which would flow across that junction.

For example assuming a Beta(gain) of 100 and an Emitter to Collector current of 200ma then a Base to Emitter current of 2ma would saturate the transistor. Just to be sure use 3ma. So the details of your circuit and what you are trying to do are important.

Answer 2

Look at the data sheets.
Off the top of my head is seems like 20-30 mA should do the trick.

Answer 3

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