Abstract: A method to assemble a non-leaded semiconductor package is disclosed. In one embodiment, a carrier tape is attached to a metal foil. A plurality of leadframes are formed in the metal foil, each leadframe including a die pad laterally surrounded by a plurality of contact leads. A semiconductor die, including an active surface with a plurality of die contact pads, is attached to each die attach pad and electrically connected to the leadframe by a plurality of bond wires connecting the die contact pads and the lead contact areas of the contact leads. A plurality of leadframes, each including a wire bonded semiconductor die, are encapsulated with mold material. The carrier tape is removed and the non-leaded semiconductor packages separated.

Abstract: A lead frame (200) for housing an integrated circuit is disclosed comprising a main member (220) and an engagement portion (230) for receiving an integrated circuit (210). The integrated circuit (210) is located at the engagement portion (230) and engaged with the lead frame through resilient engagement with the first and second engagement members (222, 223). The first and second engagement members (222,223) which depend from the main member, secure the integrated to the lead frame by engaging in resilient contact respective opposed surfaces of the integrated circuit. The integrated circuit is engaged to the lead frame by clipping into it into position between the engagement members. There is no need for a gluing process unlike conventional lead frame designs which where the integrated circuit is attached to a lead frame by gluing it onto the die paddle.

Abstract: A method to assemble a non-leaded semiconductor package (1) comprises the following steps. A carrier tape (13) is attached to a metal foil (12). A plurality of leadframes (3) is formed in the metal foil (12), each leadframe (3) comprising a die pad (4) laterally surrounded by a plurality of contact leads (5). A semiconductor die (2), including an active surface with a plurality of die contact pads (7), is attached to each die attach pad (4) and electrically connected to the leadframe (3) by a plurality of bond wires (9) connecting the die contact pads (7) and the lead contact areas (6) of the contact leads (5). A plurality of leadframes (3), each including a wire bonded semiconductor die, are encapsulated with mold material (10). The carrier tape (13) is removed and the non-leaded semiconductor packages (1) separated.

Abstract: A lead frame (1) has a first portion (2) adapted to have a semiconductor device (10) mounted thereon and a second portion (3) including a main member (5), a number of first contact members (6) and a number of second contact members (7). The first and second contact members (6, 7) depend from the main member (5). The second portion (3) at least partially surrounds the first portion (6). The first contact members (6) extend form the main member (5) in a direction away for the first portion (2) and the second contact members (7) extend from the main member (5) in a direction towards the first portion (2).

Abstract: A lead frame (1) has a first portion (2) adapted to have a semiconductor device (10) mounted thereon and a second portion (3) including a main member (5), a number of first contact members (6) and a number of second contact members (7). The first and second contact members (6, 7) depend from the main member (5). The second portion (3) at least partially surrounds the first portion (6). The first contact members (6) extend form the main member (5) in a direction away for the first portion (2) and the second contact members (7) extend from the main member (5) in a direction towards the first portion (2).