Abstract: A packaged semiconductor device includes a lead frame including plurality of lead terminals each having a plated wettable flank dimple including 2 or more different widths including narrower lead terminals and wider lead terminals. A semiconductor die is attached to the lead frame. A mold material terminates at a saw line of the packaged semiconductor device providing encapsulation except for an exposed bottom contact and an exposed sidewall contact for the plurality of lead terminals. The wider lead terminals have a necked region with a reduced width extending inward a predetermined distance from the saw line, where a terminal region inward beyond the necked region which is wider as compared to the necked region.

Abstract: A packaged semiconductor device includes a lead frame including plurality of lead terminals each having a plated wettable flank dimple including 2 or more different widths including narrower lead terminals and wider lead terminals. A semiconductor die is attached to the lead frame. A mold material terminates at a saw line of the packaged semiconductor device providing encapsulation except for an exposed bottom contact and an exposed sidewall contact for the plurality of lead terminals. The wider lead terminals have a necked region with a reduced width extending inward a predetermined distance from the saw line, where a terminal region inward beyond the necked region which is wider as compared to the necked region.

Abstract: A thermally enhanced BGA semiconductor device 10 having a heat sink 12 formed from a single piece of material with an expanded base and a pedestal in contact with a semiconductor chip 11. The pedestal is aligned through a window opening in a substrate 13 and the top surface of the base is adhered to the substrate. The heat sink 12 with an expanded base provides a path for rapid and efficient heat spreading and dissipation, a stand-off and an aid to improved package planarity during reflow to a PCB, and a long path for ingress of contaminants into the package. The device is amenable to high volume, low cost production.

Abstract: Disclosed are flex resistant die pads (18), leadframes (16), and high aspect ratio semiconductor packages (10) using the same. Methods for making devices (10, 16, and 18) according to the invention are also disclosed. Preferred embodiments of the invention are described in which tie bars (24) extending outward from the attachment region (20) of a die pad (18) are used to increase flex resistance of die pads (18), leadframes (16), and packages (10).