1. What is Reverse Saturation Current?

Definition: The reverse saturation current (I_s) is the small current that flows through a diode when it is reverse-biased.

Purpose: This calculator helps determine the reverse saturation current based on diode characteristics, which is important for circuit design and analysis.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( I_s \) — Reverse saturation current (A)
• \( I \) — Diode current (A)
• \( V \) — Voltage across diode (V)
• \( k \) — Boltzmann constant (1.381×10^-23 J/K)
• \( T \) — Temperature (K)
• \( q \) — Electron charge (1.602×10^-19 C)

Explanation: The formula calculates the reverse saturation current based on the diode's forward current, applied voltage, and temperature.

3. Importance of Reverse Saturation Current

Details: Understanding I_s is crucial for predicting diode behavior in reverse bias, leakage current analysis, and temperature-dependent performance.

4. Using the Calculator

Tips: Enter the diode current in amperes, voltage across the diode, and temperature in Kelvin. Temperature must be > 0K.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical value for reverse saturation current?
A: For silicon diodes, I_s is typically in the range of 10^-9 to 10^-12 A at room temperature.

Q2: How does temperature affect reverse saturation current?
A: I_s approximately doubles for every 10°C increase in temperature.

Q3: What's the difference between I_s and leakage current?
A: I_s is the theoretical minimum leakage current, while actual leakage current may be higher due to other factors.

Q4: Why is the Boltzmann constant important in this calculation?
A: It relates the thermal energy at the atomic level to macroscopic temperature measurements.

Q5: Can this calculator be used for all types of diodes?
A: The basic principle applies to most diodes, but specialized diodes may have additional factors to consider.