If base current is higher than Ic....

[archie18]

I would like to know what happens if base current is higher than collector current.
For e.g if my Ic = 1mA( load resistor=5K) , Vcc=+5V and I am applying 5v to base through 1K resistor. I am using this as a switch.
Under these circumstances will my transistor 2n2222 get burnt/damaged? or is it okay to use like this.
Thx,
Archie

 

[IanP]

Check the 2n2222's data sheet but it looks like even 50mA of the base current (see section on Vbesat) will not kill it ..

:wink:
IanP

 

[FvM]

Transistor operation will be safe up to at least 50 or 100 mA base current, I don't find a rating in the 2N2222 data sheet. It's not unusual, to have Ib > Ic in saturated switch operation, slower turn-off can be a problem however.