Flashless lead frame with horizontal singulation

摘要

A lead frame is configured for use with a singulation apparatus that eliminates flash. A die pad is attached to sides of the frame by tie bars and peripheral portions. The peripheral portions have cutout sections defining openings that are bridged by lead frame segments. The apparatus applies a downward force to the lead frame segments and translates the downward force to a horizontal force applied to the tie bars. The singulation process confines movement of the lead frame metal to within the plane of the lead frame.