what is saturation current and for which purpose it is taken.........???
Asked by Mukul Mantosh | 22nd Nov, 2010, 12:00: AM
Saturation current is a term used in relation to semiconductor diodes. It is more fully named reverse saturation current and is "part of the reverse current in a diode caused by diffusion of minority carriers from the neutral regions to the depletion region.
IS, the reverse bias saturation current for an ideal p-n diode is given by,
- IS is the reverse bias saturation current,
- e is elementary charge
- A is the cross-sectional area
- Dp,n are the diffusion coefficients of holes and electrons, respectively,
- ND,A are the donor and acceptor concentrations at the n side and p side, respectively,
- ni is the intrinsic carrier concentration in the semiconductor material,
- τp,n are the carrier lifetimes of holes and electrons, respectively.
Answered by | 23rd Nov, 2010, 01:08: PM
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