The SPF1K5D12 from Calex Manufacturing is a DC to DC Converter with Input Voltage 4.5 to 5.5 V, Output Voltage 1 12 V, Output Current 1 42 mA, Output Power 1 W, Output Voltage 2 -12 V. Tags: Through Hole, Buck-Boost. More details for SPF1K5D12 can be seen below.