Schmid-M: Series SURF1D_QB-50W(H)R3

50W, Input 43-160V, Single regulated, Isolation 2,1 (3)kV, Case 1/4 brick, 60.80x39.20x12.70mm 

SURF1D_QB-50WR3 Series
50W isolated DC-DC converter
Ultra-wide input and regulated single output 

Ultra-wide input voltage range: 43-160VDC
High efficiency up to 89%
Low no-load power consumption
Reinforced insulation, input - output isolationtest voltage: 3k VAC, input - case isolation test voltage: 2.1k VAC
Operating ambient temperature range: -40℃to +105℃
Input under-voltage protection, output short-circuit, over-current, over-voltage, over-temperature protection
Industry standard 1/4 brick
Meets EN50155 railway standard