| abstract |
A semiconductor chip (15) is connected to the surface of a die pad (13) of a lead frame, and inner leads (12) are connected to the electrode pads of the chip (15) through thin metallic wires (16). The die pad (13), the chip (15), and the leads (12) are sealed with a sealing resin (17), but the resin (17) does not exist on the rear surface sides of the leads (12) and the rear surface sides of the leads (12) are protruded downward from the rear surface of the resin (17) to form external electrodes (18). Since the external electrodes (18) are protruded, the stand-off heights of the electrodes (18) can be secured in advance at the time of connecting the electrodes (18) to the electrodes of a mounting substrate. Therefore, the manufacturing man-hour and manufacturing cost of a resin sealed type semiconductor device can be reduced, because the electrodes (18) can be used as external terminals as they are and it becomes unnecessary to additionally provide ball electrodes made of solder, etc., to the electrodes (18). |