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US 2011/0212341 A1Published application
Lead frame sheet
AssigneeFreescale Semiconductor, Inc.
InventorsTing Li, Qingchun He, Yongqiang Liu
Life of this patent
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Abstract
A lead frame sheet made of an electrically conductive material has lead frames integrally formed on it. Spacing members also are formed from the sheet. A first one of the spacing members is proximal to a first longitudinal edge of the sheet and a second one of the spacing members is proximal to a second longitudinal edge of the sheet. The spacing members extend from an underside surface of the sheet and, in use, space the underside surface from a planar support such as a surface of a heating block.
Claims20
A lead frame sheet, comprising:
- an electrically conductive sheet having an upper side surface and an under side surface, the electrically conductive sheet including a plurality of lead frames integrally formed therein;
- and
- spacing members integrally formed from the electrically conductive sheet, a first one of the spacing members being proximal to a first longitudinal edge of the electrically conductive sheet and a second one of the spacing members being proximal to a second longitudinal edge of the electrically conductive sheet,
- wherein the spacing members extend along the under side surface of the electrically conductive sheet, and in use the spacing members space the under side surface from a planar support.
1 more element
A lead frame sheet, comprising:
- an electrically conductive sheet with a plurality of lead frames integrally formed therein, the electrically conductive sheet having an underside surface with a protective sheet removably attached thereto;
- and
- spacing members integrally formed from the electrically conductive sheet, a first one of the spacing members being proximal to a first longitudinal edge of the electrically conductive sheet and a second one of the spacing members being proximal to a second longitudinal edge of the electrically conductive sheet,
- wherein, the spacing members extend from the underside surface of the electrically conductive sheet such that a lengthwise spacing member edge is at a distance of between 5 mm to 10 mm from the underside surface.
1 more element
Dependencies are inferred from the claim text.