The QSSNFNFAH00 from NexTek, LLC. is a RF Surge Protector with Frequency 1 to 1.2 GHz, Input Power 0.7 kW, Insertion Loss 0.05 to 0.1 dB, Operating Temperature -40 to 90 Degree C, Return Loss 23.1 to 32.3 dB. Tags: Quarter-Wave Shorting Stub (QWS). More details for QSSNFNFAH00 can be seen below.