R78-HBxx-0.5(L) Series - Innoline Regulated DC-DC Converters; Output Voltage (Vdc): 3.3V; Output Current (A): 0.5A; Features: Efficiency up to 96%; Non isolated, no need for heatsinks; Pin-out compatible with LM78XX Linears; Low profile( L*W*H=11.5*8.5*17.5mm); High voltage input range, up to 72V; Short circuit protection, Thermal shutdown; Non standard outputs available as specials between 3.3V~24V; Low ripple and noise; ?L? version with 90?? pins; See Positive to Negative Converter Application Note for use as a voltage inverter (alternative to LM79xx Linear)