Parallel dual switch module

Abstract

A parallel dual switch module that is characterized by improved mechanical and electrical packaging efficiency and low cost. The module includes a common terminal defined by a first stamped elongate metal plate insert molded into the module housing, and positive and negative terminals defined by second and third stamped elongate metal plates disposed side-by-side atop the common terminal. Connection areas formed on the positive and negative terminals extend in opposite lateral directions, and interdigitate with connection areas formed on the common terminal, thereby forming two linear parallel rows of connection areas. Adjacent each row of connection areas, and mounted on a baseplate of the module is a set of parallel connected transistors subassemblies. A molded elongate gate collection component is mounted on the baseplate between the sets of transistor subassemblies, and beneath the common terminal. The gate collection component confines a pair of insert molded gate terminal strips to which the gate terminals of the respective sets of transistor subassemblies are connected, and the terminal strips, in turn, are coupled to gate terminals of the module. The transistor subassemblies are mounted in close proximity to the central terminal structure, and the metal tabs of the subassemblies are shaped to prevent interference with the overlying terminal connection areas, and to provide stress relief.