The QM48T50018 Series is a 90 W DC-DC converter from the QmaX™ family in a through-hole quarter-brick, accepting 36 ~ 75 VDC and delivering a regulated 1.8 VDC at 50 A at a power density exceeding competitive 50 A half-bricks by more than 2×. Each slot converted from a half-brick frees over 2 in² of board area and reduces the body volume obstructing chassis airflow. Heat-sink-free operation spans -40 ~ +85 °C.