BJT Base Resistor Sizer
Estimate base drive and resistance for a transistor switching stage.
Input parameters
Results
Check saturation conditions and driver current capability.
Model & assumptions
Ib = Ic / forced β; RB = (Vdrive − VBE(sat)) / Ib.
Switching BJT estimate. Enter saturation data from the selected transistor and the loaded driver output voltage.
Sources
Have a selected part number or BOM?
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