The SMP-MSSB-PTR-NM from Amphenol RF is a RF Connector with Frequency DC to 20 GHz, Operating Temperature -65 to 165 Degree C, Return Loss -26.4 to -20 dB, Voltage Rating 500 Vrms (Dielectric withstanding), VSWR 1.10:1, 1.22:1. Tags: Standard. More details for SMP-MSSB-PTR-NM can be seen below.