Quantic PMI Model P4T-100M53G-100-T-RD-185MM is an absorptive single pole four throw pin diode switch that operates over the 100 MHz to 53 GHz frequency range. Features low insertion loss of 5 dB at 18 GHz, and high isolation of 70 dB minimum, a switching speed of 50 ns, and an input power of +23 dBm in a slimline package. This model also incorporates a TTL compatible driver for ease of system integration and has 1.85mm female connectors and a size of 1.25" x 1.25" x 0.40".
https://www.quanticpmi.com/product-details/p4t-100m53g-100-t-rd-185mm
