The CU4S0508AC-3600-00 from TDK Corporation is a Circulator that operates from 3400 to 3600 MHz. It has an insertion loss of less than 1.2 dB, isolation of over 10 dB, and can handle up to 5 watts of power. This circulator has a clockwise direction of circulation and has a VSWR of 2:1. It is available in a surface-mount package that measures 5.2 (L) x 5 (W) x 2.5 (T) mm and can be used for commercial-grade applications.