Trisil characteristics

AN320

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Doc ID 5649 Rev 3

Figure 5.

Return to standby operation

The surge current associated with the disturbance is diverted through the Trisil as soon as it

begins to operate in the avalanche mode (see Figure 3) and the voltage limitation results

from the electrical characteristic at this point. The behavior of the Trisil is here identical to

the triggering of the thyristor structures take place.

This phenomenon results in absolute limitation independently of the current level, and a

capacity to divert currents much higher than those possible for an avalanche diode (Transil).

Furthermore, this limitation is independent of the avalanche voltage of the device.

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