Maximum Space Charge Width Calculator

Maximum Space Charge Width Calculator

Calculate the maximum depletion (space charge) width of a MOSFET.

Step 1: Enter Semiconductor Parameters

For silicon, approximately \(1.035 \times 10^{-10}\) F/m

Typical value: 0.3 V

Example: \(1 \times 10^{16}\) cm\(^{-3}\)

Maximum Depletion Width: $$ W_{dm} = \sqrt{\frac{4 \, \epsilon_s \, \phi_f}{q \, N_A}} $$

where \( q = 1.602 \times 10^{-19}\, \text{C} \).