Patent ID: 7667241

Claim:
An electrostatic discharge protection device for protecting a node, comprising: (a) a transistor, comprising (i) a semiconductor substrate, (ii) a source region, in the substrate, (iii) a channel region, in the substrate, adjacent the source region, (iv) a gate, over the channel region, and (v) a drain region, in the substrate, laterally displaced from the channel, (b) a silicon controlled rectifier, in the substrate, comprising (i) the source region, (ii′) a portion of the substrate, (iii′) a doped well, in the substrate, and (iv′) a first contact region, in the well, laterally displaced from the drain region, (c) a second contact region, in the substrate, laterally displaced from the first contact region, and (d) a collection region, in the substrate, adjacent the source region, wherein the collection region, the source region and the gate, are metallically connected, the node, the first contact region, and the second contact region, are metallically connected, the drain region is not metallically connected to the node, and the electrostatic discharge protection device having a trigger voltage of 12-100 volts.