H ELECTRICITY
H01 ELECTRIC ELEMENTS
H01L SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
H01L2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
H01L2924/15 Details of package parts other than the semiconductor or other solid state devices to be connected
H01L2924/151 Die mounting substrate
H01L2924/153 Connection portion
H01L2924/1531 the connection portion being formed only on the surface of the substrate opposite to the die mounting surface