stamping or pressing a metal plate the third pin 103 includes an outer pin 103 b and an inner pin 103 a transversely extending along the direction parallel to the rear side edge of the base 105 where the inner pin 103 a is thinner than the outer pin 103 b similarly the fourth pin 104 includes an outer pin 104 b and an inner pin 104 a transversely extending along the direction parallel to the rear side edge of the base 105 where the inner pin 104 a is thinner than the outer pin 104 b the inner pin 103 a of the third pin 103 and the inner pin 104 a of the fourth pin 104 extended toward each other through the center line between the left side and the right side of the base with the top surfaces of the inner pins 103 a and 104 a being coplanar with the front surface of the base 105 in fig3 a and 3b the outer pins 101 u2032 b and the outer pin 103 b are arranged in parallel and the outer pin 104 b and the outer pins 102 u2032 b are arranged in parallel where the outer pins 101 u2032 b 103 b 104 b and 102 u2032 b and the base 105 are located in the same plane referring to fig3 b the first chip 106 is flipped and attached on the base 105 such that the first chip 106.