The SHD4111 includes four elements (two fast recovery diodes, two N-channel power MOSFETs) in its small HSON package. The internal power MOSFETs have Zener diodes between gates and sources, thus requiring no externally clamped circuit for an injection coil drive circuit. Supplied in a low thermal resistance package, the product achieves high performance in heat dissipation. In addition, its HSON package employs a wettable flank structure, with the pin tips plated and the case resin around the pins grooved. This achieves higher reliability in mounting.