Patent ID: 11908895
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. The electrostatic discharge protection device of claim 17, wherein:
the second conductivity-type deep well is configured to define respective current paths between the emitter region and the first collector region and the second collector region deeper than the second conductivity-type shallow well; and
the first impurity concentration of the second conductivity-type deep well is about 2.5×1012/cm2 to 5×1012/cm2, the second impurity concentration of the second conductivity-type shallow well is about 2.5×1013/cm2 to 5×1013/cm2, and the third impurity concentration of the second conductivity-type body region is about 1×1013/cm2 to 3.5×1013/cm2.