The QME48T40 Series is a DC-DC converter family in a through-hole quarter-brick, accepting 36 ~ 75 VDC and delivering 40 A across multiple output voltage options. Patented thermal packaging sustains rated output current without a heat sink at elevated ambient temperatures. A single PCB layout covers the full voltage range; output trim of -20% ~ +10% adapts each variant to its downstream load. Suited for high-density enterprise servers and telecom infrastructure.