Semiconductor Devices

Semiconductor device calculators and formulas for diode and transistor behavior in electronic circuits. Includes diode current, transistor gain, and biasing calculations.

7Formulas

All levels Difficulty

Updated Jul 2026

← All Electrical Engineering (151) Semiconductor Devices (7)

Fundamental

Zener Diode Voltage Regulation

V_out ≈ V_Z

Fundamental

CMOS Dynamic Power Dissipation

P = C·V²·f

Fundamental

MOSFET Transconductance

g_m = 2I_D / (V_GS − V_T)

Fundamental

Diode Small-Signal Resistance

r_d = V_T / I_D

Fundamental

BJT Collector Current (Early Effect)

I_C = I_S·e^(V_BE/V_T)·(1 + V_CE/V_A)

Fundamental

BJT Emitter Current

I_E = I_C + I_B

Fundamental

MOSFET Saturation Current

I_D = ½k(V_GS − V_T)²