Emitter Injection Efficiency Factor Calculator

Emitter Injection Efficiency Factor Calculator

Calculate the emitter injection efficiency factor using the equation:
\[ \eta_{inj} = \frac{I_{n}}{I_{n} + I_{p}} \] where \(I_{n}\) is the electron injection current and \(I_{p}\) is the hole injection current.

* Enter the injection currents in mA.

Step 1: Enter Parameters

Example: 2 mA

Example: 0.5 mA

Formula: \( \eta_{inj} = \frac{I_{n}}{I_{n} + I_{p}} \)


Practical Example:
If the electron injection current \( I_{n} \) is 2 mA and the hole injection current \( I_{p} \) is 0.5 mA, then:
\[ \eta_{inj} = \frac{2}{2 + 0.5} = \frac{2}{2.5} = 0.8 \quad (80\%) \]