The 1221-40049 is an SMP jack connector with a quarter back nut, intended for termination with Ø.085 inch cable. This connector provides a 50 Ohm impedance and is engineered for high-frequency performance, operating over a range from DC to 40.0 GHz. Key electrical characteristics include a VSWR of 1.30:1 from DC to 18.0 GHz and an insertion loss of .03 x SQRT(F) dB. Its construction features a gold-plated beryllium copper body and contact, a PTFE insulator, and an SMP interface compliant with MIL-STD 348, ensuring reliability in demanding RF applications.