Alternative Leaded Package for Surface-Mounted Components
Original Publication Date: 1986-Nov-01
Included in the Prior Art Database: 2005-Mar-09
The Alternate Leaded Package (ALP) shown in Figs. 1 and 2 is designed to combine the two advantages of present leaded packages for surface- mounted components (SMCs). These are 1) lead flexibility and 2) accessibility for rework. In addition to the above advantages, visual inspection of solder joints is also improved. Fig. 1 shows the general package arrangement. Fig. 2 shows the same package with guide pins molded as part of the main body. These pins allow package orientation and registration for automatic placement. The height of the package can be varied by changing Y and O, as shown in Fig. 3A. Fig. 3B shows a schematic form of "as molded" and "after lead forming" stages in manufacturing. The package can be used with screened paste process or modified wave solder process.