| 摘要 |
<p>PURPOSE:To restrict the occurring region of any resin flash to the parts near a resin sealed body by a method wherein two grooves are formed along almost full width length in the width length direction of an outer lead to force-fit a liquefied sealing resin in a molding cavity for setting. CONSTITUTION:An irregular holding surface 22 taking at least two V-sectional shape comprising a first groove 23 and a second groove 24 going across in the width length direction of a lead 5 is formed on one main surface 5a of the outer lead 5. The lead 5 is arranged in an outer lead fitting groove 19 provided in a bottom force 13 while the irregular holding surface 22 of the lead 5 is held by a top force 12 and the bottom force 13. A melted resin is force-fitted in a molding cavity 14 formed in a molding die 11 to mold the resin sealed body. At this time, the melted resin leaking out of the cavity 14 along the main surface 5a of the lead 5 is trapped in the groove 23. Through these procedures, the occurring region of any resin flash can be restricted to the parts near the resin sealed body.</p> |
