The M54MS18Y03 from MicroRFconnector is a RF Connector with Frequency DC to 27 GHz, Connector Length 0.504 Inches, Operating Temperature -55 to 100 Degree C, Pin Diameter 0.018 inches, Voltage Rating 1000 V (Withstanding Voltage). Tags: Field Replaceable. More details for M54MS18Y03 can be seen below.