The 1.0-JFD1 from Mechanc is a RF Connector with Frequency DC to 110 GHz, Operating Temperature -55 to 165 Degree C, Pin Diameter 0.23 mm, Voltage Rating 300 Vrms (Dielectric Withstanding Voltage), VSWR 1.50:1. Tags: Standard. More details for 1.0-JFD1 can be seen below.