The 1206-205-M20-PJ from San-tron is a RF Connector with Frequency DC to 27 GHz, Operating Temperature -65 to 165 Degree C, Pin Diameter 0.508 mm(0.02 Inch), Voltage Rating 335 Vrms, VSWR 1.10:1, 1.15:1. Tags: Field Replaceable. More details for 1206-205-M20-PJ can be seen below.