Protection device of an integrated circuit against electrostatic discharges.

摘要

The invention relates to the protection of integrated circuits against electrostatic discharges. The protection structure includes a thyristor: N+ region (16) connected to earth (18); P<-> substrate (20); N<-> deep well (12) forming a trigger region; and P+ region (22) linked to an external connection pin to be protected (PL). The trigger region is linked by a resistor R1 of low value (a few ohms at most) to the pin (PL). This resistor increases the current for which the thyristor fires and eliminates certain risks of destroying the circuit.