Enter the reverse saturation current (amps), the applied voltage (volts), and the Temperature (K) into the calculator to determine the Diode Current.

## Diode Current Formula

The following formula is used to calculate the Diode Current.

Id = Irs * ( e^ (q*V/(k*T)) – 1)

• Where Id is the Diode Current (amps)
• Irs is the reverse saturation current (amps)
• V is the applied voltage (volts)
• T is the Temperature (K)
• q is the charge of an electron (1.60217662 *10^-19 C)
• k is the Boltzmann constant (1.38064852 * 10^-23)

## How to Calculate Diode Current?

The following example problems outline how to calculate Diode Current.

Example Problem #1

1. First, determine the reverse saturation current (amps). In this example, the reverse saturation current (amps) is determined to be 50 .
2. Next, determine the applied voltage (volts). For this problem, the applied voltage (volts) is measured to be 415 .
3. Next, determine the Temperature (K). In this case, the Temperature (K) is found to be 40.
4. Finally, calculate the Diode Current using the formula above:

Id = Irs * ( e^ (q*V/(k*T)) – 1)

Inserting the values from above and solving yields:

Id = 50* ( e^(1.60217662 *10^-19*415/(1.38064852 * 10^-23*40)) – 1) = (amps)

Example Problem #2

Using the same method as above, determine the variables required by the formula. For this example problem, these are:

reverse saturation current (amps) = 321

applied voltage (volts) = 96

Temperature (K) = 7

Enter these given values into the calculator or above yields:

Id = Irs * ( e^ (q*V/(k*T)) – 1) = (amps)