HX1188NL is a pulse transformer designed to provide galvanic isolation, signal coupling and impedance matching in telecommunication applications. It is commonly used to provide signal isolation between two sides of a network, allowing data communication without direct electrical connection. The Pulse HX1188NL is a surface-mountable transformer with an isolation of 1000Vrms, is 50O impedance, and has a 0-2kV maximum operating voltage. It has a primary inductance of 500µH and secondary inductance of 4µH.