The QM48S40033 Series is a 132 W DC-DC converter from the QmaX™ family in a surface-mount quarter-brick, accepting 36 ~ 75 VDC and delivering a regulated 3.3 VDC at 40 A at a power density up to 130 W/in³, more than twice that of competitive 40 A half-brick solutions. Each slot converted from a half-brick recovers over 1 in² of board space. Output voltage trim, no minimum load, and heat-sink-free operation are standard.