Saturation current calculator for inductors and flyback transformers

August 4, 2024

Firstly, I want to say that I technically don't know what I am doing here, so please don't use this for anything really important.

Enter the values and it gives you saturation current.

First we calculate how many turns of wire you will need in order to get your desired inductance.

Enter the required inductance (uH):

Enter \( A_L \) (Core factor, nH):

I do not have the \(A_L\) value

Enter the equivalent cross sectional area (mm²):

Enter \( L_e \) (Equivalent length of the core, mm):

Enter \( \mu_e \) (Equivalent relative permeability of the core material):

The number of turns you will need is NaN turns.

Now we calculate the maximum current that your inductor can handle before saturating.

Enter \( B_s \) (Core maximum B field, Teslas):

Enter \( L_e \) (Equivalent length of the core, mm):

Enter \( \mu_e \) (Equivalent relative permeability of the core material):

The saturation current of your inductor is NaN amps.