Semiconductor device with correct case placement feature

A semiconductor device comprising:

• a case having a top face;
• at least first and second semiconductor chips contained within said case, each chip having first and second main electrodes;
• first and second externally drawn terminals which are connected to respective main electrodes of each semiconductor chip, said externally drawn terminals being arranged side by side and drawn out through the top face of each case, said externally drawn terminals having the same polarity being arranged in straight rows and said rows of the terminals being arranged in parallel with terminals of different polarities;
• wherein:
• each of said first and second externally drawn terminals includes a riser portion having predetermined width below said top face of said case and an extended portion having predetermined width above said top face of said case,
• the width of said riders portion of the first externally drawn terminal is equal to the width of said extended portion of said first externally drawn terminal,
• the width of said riser portion of the second externally drawn terminal is greater than the width of said extended portion of said externally drawn terminal,
• the width of said rider position of the first externally drawn terminal is equal to the width of said extended portion of said first externally drawn terminal,
• said first and second externally drawn terminals extend through respective first and second openings formed in the top face of said case,
• said first opening width corresponds to the width of said first extended portion, and
• said second opening width corresponds either to said second riser portion or else to said second extended portion with said case having a groove that corresponds to the width of said second riser.