Why is reverse saturation current constant?

Since this current is due to minority carriers and these number of minority carriers are fixed at a given temperature therefore, the current is almost constant known as reverse saturation current ICO. This is due to surface leakage current. The surface of diode follows ohmic law (V=IR).

How does the reverse saturation current change with applied reverse voltage and temperature?

Reverse saturation current (IS) of diode increases with increase in the temperature the rise is 7\%/ºC for both germanium and silicon and approximately doubles for every 10ºC rise in temperature. Thus if we kept the voltage constant, as we increase temperature the current increases.

Does the reverse bias current depend on voltage?

The current flows effortlessly while in forward bias, but reverse bias does not permit current to flow through the diode. The level of the current depends on the forward voltage while in forward bias, however, the amount of current is minimal or negligible in reverse bias.

What is the difference between reverse current and reverse saturation current?

In the Gummel Poon the main reverse saturation current of the transistor is Is which is the transport saturation current. The reverse saturation current is the reverse current of an ideal pn junction and it is limited by diffusion of minority carrier from the neutral regions towards the space charge region.

What are the factors that decide the magnitude of reverse saturation current?

The magnitude of this current depends on the magnetic gradient across the junction, ie the flux density between the minority carriers and the opposite layer. It also depends on the thermal conditions across the junction and the crosssectional area of the junction.

What is reverse bias saturation current?

reverse saturation current is a current flow due to minority carrier from a neutral region to enlarging depletion region, this minority carriers are formed at junction due to thermally produced electrons and holes.

How does the reverse saturation current of diode varies with temperature?

Reverse saturation current: The reverse saturation current of the diode increases with an increase in the temperature. The rise is 7\% /°C for both germanium and silicon and approximately doubles for every 10°C rise in temperature.

What is maximum reverse current?

Maximum reverse current = IR, the amount of current through the diode in reverse-bias operation, with the maximum rated inverse voltage applied ( VDC ). Sometimes referred to as leakage current. Ideally, this figure would be zero, as a perfect diode would block all current when reverse-biased.

The current is called reverse saturation current and it remains almost constant with the change in reverse bias voltage. When the bias voltage is increased above certain voltage called reverse breakdown voltage, the current increases very rapidly. There is a drastic change in the value of current even for a small change in voltage.

What is reverse saturation current in p-n diode?

In a PN junction diode, the reverse saturation current is due to the diffusive flow of minority electrons from the p-side to the n-side and the minority holes from the n-side to the p-side. when voltage breakdown occurs,current remains constant and not increase eventhough there is increase of voltage.

What is the reverse current?

Reversed current occurs when there is a higher voltage at the output of a system than the input, causing the current to flow back through the system. There are two common sources of reverse voltage: (1) when the power is disconnected from a system.