snapback
n.— «The turning on of the bipolar transistor results in a drop in voltage, often called bipolar snapback. The bipolar region is characterized by Vsb, the snapback voltage, and the resistance of the snapback region, R. The snapback region ends at the second breakdown point Vt2, It2.» —“Transmission line pulse is an effective analysis tool for ESD” by Robert Ashton ECNAsiamag.com Jan. 1, 2008. (source: Double-Tongued Dictionary)