Triode Switch Saturation Calculator

The transistor goes into saturation, or drives the electronic switch. So calculating the parameters is important.

Collector resistance (Rc)KΩ

Positive Voltage (VP)V

Beta (Amplification factor, current gain)

VBE (Base to emitter drop)V

Rb (Base resistor)KΩ

To saturate with load current, the base current must be Ib = Ic / Beta.

Rb = (VP - VBE) / Ib = (VP - VBE) * Amplification Factor / Ic = (VP - VBE) * Amplification Factor * Rc / VP