Patent ID: 7566953

Claim:
A plastic overmolded package comprising: a. a leadframe, the leadframe having a top side and a bottom side, and comprising: i. a die attachment portion on the top side of the leadframe, ii. at least one semiconductor device attached to the die attachment portion on the top side of the leadframe, with the bottom side of the leadframe devoid of a semiconductor device, iii. at least two leads extending from the center die attachment portion, the leads having a width W lead and a thickness T, iv. at least one slot formed in at least one of the leads, the at least one slot having a width W slot and a length L, wherein length L is substantially greater than width W slot , and wherein the length L of the slot extends along the width W lead of the lead, and further wherein the at least one slot extends through the thickness T of the lead thus providing an inboard slot edge nearest to a semiconductor device and an outboard slot edge furthest from the device, b. a plastic overmold comprising an integral body having a top, a bottom and sidewalls, the plastic overmold filling the at least one slot and additionally encapsulating the semiconductor device and the bottom of the leadframe while leaving a portion of the leads exposed, the exposed portions of the leads extending away from the sidewalls of the overmold.