In a non-leaded type semiconductor device, a tab, tab suspension leads, and other leads are exposed to one surface of a seal member. A semiconductor element is positioned within the seal member and fixed to a surface of the tab with an adhesive. The tab is formed larger than the semiconductor element so that outer peripheral edges of the tab are positioned outside outer peripheral edges of the semiconductor element. A groove is formed in the tab surface portion positioned between the area to which the semiconductor element is fixed and wire connection areas to which the wires are connected, the groove being formed so as to surround the semiconductor element fixing area, thereby preventing peeling-off between the tab to which the semiconductor element is fixed and the resin which constitutes the package.

In a non-leaded type semiconductor device, a tab, tab suspension leads, and other leads are exposed to one surface of a seal member. A semiconductor element is positioned within the seal member and fixed to a surface of the tab with an adhesive. The tab is formed larger than the semiconductor element so that outer peripheral edges of the tab are positioned outside outer peripheral edges of the semiconductor element. A groove is formed in the tab surface portion positioned between the area to which the semiconductor element is fixed and wire connection areas to which the wires are connected, the groove being formed so as to surround the semiconductor element fixing area, thereby preventing peeling-off between the tab to which the semiconductor element is fixed and the resin which constitutes the package.

A semiconductor device (100) comprising a leadframe (120) having an assembly pad (121) in a first horizontal plane (180), the pad's first surface (121a) with a semiconductor chip (110) attached; further a plurality of leads (122) in a parallel second horizontal plane (190) offset from the first plane in the direction of the attached chip, the leads having a third surface (122a) with bonding wires, and an opposite fourth surface (122b); a package (140) encapsulating leadframe, chip, and wires, the package having a fifth surface (140a) parallel to the first and second planes; a plurality of recess holes (150) in the package, each hole stretching from the fifth surface to the fourth surface of respective leads; and solder (160) filling the recess holes, the solder attached to the fourth lead surface and extending to the fifth package surface.

A semiconductor device (100) comprising a leadframe (120) having an assembly pad (121) in a first horizontal plane (180), the pad's first surface (121a) with a semiconductor chip (110) attached; further a plurality of leads (122) in a parallel second horizontal plane (190) offset from the first plane in the direction of the attached chip, the leads having a third surface (122a) with bonding wires, and an opposite fourth surface (122b); a package (140) encapsulating leadframe, chip, and wires, the package having a fifth surface (140a) parallel to the first and second planes; a plurality of recess holes (150) in the package, each hole stretching from the fifth surface to the fourth surface of respective leads; and solder (160) filling the recess holes, the solder attached to the fourth lead surface and extending to the fifth package surface.

A semiconductor component support is provided which includes a component support portion for a semiconductor component to be mounted on the semiconductor component support portion. The component support portion includes a metal part that includes an opening in plan view. The opening of the metal part includes first and second sections. The second section communicates with the first section, and is arranged outside the first section. The second section is wider than the first section. The first section can be at least partially positioned directly under a mount-side main surface of the semiconductor component.

A semiconductor component support is provided which includes a component support portion for a semiconductor component to be mounted on the semiconductor component support portion. The component support portion includes a metal part that includes an opening in plan view. The opening of the metal part includes first and second sections. The second section communicates with the first section, and is arranged outside the first section. The second section is wider than the first section. The first section can be at least partially positioned directly under a mount-side main surface of the semiconductor component.

A semiconductor device (100) comprising a leadframe (120) having an assembly pad (121) in a first horizontal plane (180), the pad's first surface (121a) with a semiconductor chip (110) attached; further a plurality of leads (122) in a parallel second horizontal plane (190) offset from the first plane in the direction of the attached chip, the leads having a third surface (122a) with bonding wires, and an opposite fourth surface (122b); a package (140) encapsulating leadframe, chip, and wires, the package having a fifth surface (140a) parallel to the first and second planes; a plurality of recess holes (150) in the package, each hole stretching from the fifth surface to the fourth surface of respective leads; and solder (160) filling the recess holes, the solder attached to the fourth lead surface and extending to the fifth package surface.

A semiconductor device (100) comprising a leadframe (120) having an assembly pad (121) in a first horizontal plane (180), the pad's first surface (121a) with a semiconductor chip (110) attached; further a plurality of leads (122) in a parallel second horizontal plane (190) offset from the first plane in the direction of the attached chip, the leads having a third surface (122a) with bonding wires, and an opposite fourth surface (122b); a package (140) encapsulating leadframe, chip, and wires, the package having a fifth surface (140a) parallel to the first and second planes; a plurality of recess holes (150) in the package, each hole stretching from the fifth surface to the fourth surface of respective leads; and solder (160) filling the recess holes, the solder attached to the fourth lead surface and extending to the fifth package surface.

An LED leadframe or LED substrate includes a main body portion having a mounting surface for mounting an LED element thereover. A reflection metal layer serving as a reflection layer for reflecting light from the LED element is disposed over the mounting surface of the main body portion. The reflection metal layer comprises an alloy of platinum and silver or an alloy of gold and silver. The reflection metal layer efficiently reflects light emitted from the LED element and suppresses corrosion due to the presence of a gas, thereby capable of maintaining reflection characteristics of light from the LED element.

An LED leadframe or LED substrate includes a main body portion having a mounting surface for mounting an LED element thereover. A reflection metal layer serving as a reflection layer for reflecting light from the LED element is disposed over the mounting surface of the main body portion. The reflection metal layer comprises an alloy of platinum and silver or an alloy of gold and silver. The reflection metal layer efficiently reflects light emitted from the LED element and suppresses corrosion due to the presence of a gas, thereby capable of maintaining reflection characteristics of light from the LED element.