The IBS049 from ISOBAUD is a Space Qualified Optocoupler with Forward Voltage 1.1 to 1.8 V, Isolation Voltage 1000 V, Power Consumption 60 mW(Emitter power dissipation), Resistance 10 Ohms, Capacitance 5 pF. Tags: Surface Mount. More details for IBS049 can be seen below.