The Schottky diodes are often called “4-layer diodes” because 2 layers of each type of semiconductor material is included in their construction. The result is a NPNP device. As with all other types of diodes, they are two-lead devices.
The Schottky family of diodes includes a PIN diode, this is sometimes referred to as the silicon hot-carrier diode. These are breakdown devices, means that their useful role is to become highly conductive in case when the reverse voltage across them exceeds the value of an inherent trigger voltage. Not like zener diodes, these diodes do not maintain their
avalanche voltage across them after the trigger voltage has been reached. In contrast, their internal resistance drops to an extremely low level of only a few ohms, and stays there as long as a minimum holding current is maintained. The common uses of Schottky diodes are:
The Schottky family of diodes includes a PIN diode, this is sometimes referred to as the silicon hot-carrier diode. These are breakdown devices, means that their useful role is to become highly conductive in case when the reverse voltage across them exceeds the value of an inherent trigger voltage. Not like zener diodes, these diodes do not maintain their
avalanche voltage across them after the trigger voltage has been reached. In contrast, their internal resistance drops to an extremely low level of only a few ohms, and stays there as long as a minimum holding current is maintained. The common uses of Schottky diodes are:
- high-frequency switching,
- detecting, and
- oscillator circuits.
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