Junction Capacitance / Depletion Layer Capacitance Calculator Junction Capacitance / Depletion Layer Capacitance Calculator Calculate the junction capacitance using the equation: \[ C = A \sqrt{\frac{q\,\epsilon_s\,N}{2\,(V_{bi}+V_R)}} \] where: – \( \epsilon_s \) is the semiconductor permittivity (F/m), – \( A \) is the junction area (m²), – \( N \) is the doping concentration (m\(^{-3}\)), […]
Common Emitter Current Gain (β) Calculator Common Emitter Current Gain (β) Calculator Calculate the common emitter current gain using the equation: \[ \beta = \frac{I_C}{I_B} \] where \(I_C\) is the collector current and \(I_B\) is the base current. * Enter currents in amperes (A). Step 1: Enter Parameters Collector Current, \( I_C \) (A): Example: […]
Common Base Current Gain (α) Calculator Common Base Current Gain (α) Calculator Calculate the common base current gain using the equation: \[ \alpha = \frac{I_C}{I_E} \] where \(I_C\) is the collector current and \(I_E\) is the emitter current. * Enter the currents in amperes (A). Step 1: Enter Parameters Collector Current, \( I_C \) (A): […]
Avalanche Breakdown Voltage Calculator Calculate the avalanche breakdown voltage for a PN junction diode using the equation: \[ V_{BR} = \frac{\epsilon_s \, E_{crit}^2}{2qN} \] where \(\epsilon_s\) is the semiconductor permittivity, \(E_{crit}\) is the critical electric field, and \(N\) is the doping concentration. * Enter all values in SI units. Step 1: Enter Parameters Semiconductor Permittivity, […]
Built-in Potential Barrier Height Calculator Built-in Potential Barrier Height Calculator Calculate the built-in potential barrier height using the equation: \[ V_{bi} = \frac{kT}{q}\ln\left(\frac{N_A\,N_D}{n_i^2}\right) \] where \(T\) is the temperature in Kelvin, \(N_A\) and \(N_D\) are the acceptor and donor concentrations, and \(n_i\) is the intrinsic carrier concentration. * Enter all values in SI units. Step […]
Drift Current Density Calculator Drift Current Density Calculator Calculate the drift current density using the equation: \[ J_{drift} = q\,n\,\mu\,E \] where \(q\) is the elementary charge, \(n\) is the carrier concentration, \(\mu\) is the mobility, and \(E\) is the electric field. * Enter all values in SI units. Step 1: Enter Parameters Carrier Concentration, […]
Equilibrium Carrier Concentration Calculator Equilibrium Carrier Concentration Calculator Calculate the equilibrium electron and hole concentrations in a doped semiconductor using the mass‑action law and charge neutrality: For n‑type (when \(N_D \geq N_A\)): \[ n_0 = \frac{N_D-N_A}{2} + \sqrt{\left(\frac{N_D-N_A}{2}\right)^2+n_i^2} \quad \text{and} \quad p_0 = \frac{n_i^2}{n_0} \] For p‑type (when \(N_A > N_D\)): \[ p_0 = \frac{N_A-N_D}{2} […]
Intrinsic Carrier Concentration Calculator Intrinsic Carrier Concentration Calculator Calculate the intrinsic carrier concentration in a semiconductor using the equation: \[ n_i = \sqrt{N_c\,N_v}\,\exp\left(-\frac{E_g}{2\,k\,T}\right) \] where: – \(N_c\) is the effective density of states in the conduction band (m\(^{-3}\)), – \(N_v\) is the effective density of states in the valence band (m\(^{-3}\)), – \(E_g\) is the […]
Reverse Saturation Current Density in PN Junction Diode Calculator Reverse Saturation Current Density in PN Junction Diode Calculator Calculate the reverse saturation current density using the equation: \[ J_{s} = q\, n_{i}^{2}\left(\frac{D_{p}}{N_{D}\,L_{p}} + \frac{D_{n}}{N_{A}\,L_{n}}\right) \] where all parameters are in SI units. * Enter all values in SI units. Step 1: Enter Parameters Intrinsic Carrier […]
PN Junction Space Charge Width & Maximum Electric Field Calculator PN Junction Space Charge Width & Maximum Electric Field Calculator Calculate the space charge width and the maximum electric field in a PN junction using the equations: \[ W = \sqrt{\frac{2\,\epsilon_s\,(\phi_{bi}-V)}{q\,N}} \] and \[ E_{max} = \sqrt{\frac{2\,q\,N\,(\phi_{bi}-V)}{\epsilon_s}} \] where the net potential is \(\phi_{bi}-V\). * […]