An ideal diode should accept the afterward characteristics:
When forward-biased, the voltage beyond the end terminals of the diode should be zero, whatever the accepted that flows through it (on-state);
When reverse-biased, the arising accepted should be zero, whatever the voltage (off-state).
The alteration amid on and off states should be instantaneous.
In reality, the architecture of a diode is a accommodation amid achievement in on-state, off-state and commutation. Indeed, the aforementioned breadth of the accessory have to sustain the blocking voltage in the off-state and acquiesce accepted breeze in the on-state. As the requirements for the two states are absolutely opposite, a diode has to be either optimised for one of them, or time have to be accustomed to about-face from one accompaniment to the added (i.e. apathetic down the barter speed).
This accommodation amid on-state/off-state and switching acceleration is the aforementioned for all ability devices. A Schottky diode has accomplished switching acceleration and on-state performance, but a top akin of arising accepted in off-state. On the added hand, PIN diodes are commercially accessible in altered barter speeds (so-called "fast" and "ultrafast" rectifiers), but any access in acceleration is paid for by a lower achievement in the on-state.
When forward-biased, the voltage beyond the end terminals of the diode should be zero, whatever the accepted that flows through it (on-state);
When reverse-biased, the arising accepted should be zero, whatever the voltage (off-state).
The alteration amid on and off states should be instantaneous.
In reality, the architecture of a diode is a accommodation amid achievement in on-state, off-state and commutation. Indeed, the aforementioned breadth of the accessory have to sustain the blocking voltage in the off-state and acquiesce accepted breeze in the on-state. As the requirements for the two states are absolutely opposite, a diode has to be either optimised for one of them, or time have to be accustomed to about-face from one accompaniment to the added (i.e. apathetic down the barter speed).
This accommodation amid on-state/off-state and switching acceleration is the aforementioned for all ability devices. A Schottky diode has accomplished switching acceleration and on-state performance, but a top akin of arising accepted in off-state. On the added hand, PIN diodes are commercially accessible in altered barter speeds (so-called "fast" and "ultrafast" rectifiers), but any access in acceleration is paid for by a lower achievement in the on-state.
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