| 摘要 |
A method ( 300 ) for fabricating a lead frame ( 100 ), comprising forming a plurality of external leads ( 122 ) in a lead frame material ( 108 ), plating a metal ( 222 ) on all surfaces of the lead frame material ( 108 ), and subsequently forming a plurality of internal leads ( 124 ) in the lead frame material ( 108 ). The lead frame material ( 108 ) may comprise of a portion of a contiguous metal sheeting ( 204 ) rolled upon a first coil ( 202 ), wherein the contiguous metal sheeting ( 204 ) is fed into an external lead stamping apparatus ( 206 ), thus forming the external leads ( 122 ), and rolled onto a second coil ( 215 ). The portion is fed into a plating apparatus and plated with the metal ( 222 ), and rolled onto a third coil ( 218 ) prior to forming the plurality of internal leads ( 124 ). The third coil ( 218 ) can be unrolled into an internal lead stamping apparatus ( 226 ), thus forming the internal leads ( 124 ) of a lead frame ( 100 ). The lead frame ( 100 ) is cleaned and subsequently rolled onto a fourth coil ( 238 ) to be cut into sheets ( 240 ). |
