The 2SMD7BA from Renaissance Electronics Corporation is a Dual-Junction Cryogenic Isolator that operates in the C-Band from 4 to 8 GHz. It provides an isolation of 35 dB and has an insertion loss of 1 dB. This isolator can handle an input power of 1 W and has a VSWR of 1.25:1. It has been designed to work at mK temperatures and maintains a low insertion loss across the operating bandwidth. This compact cryogenic isolator is available in a surface-mount package that measures 1.50 x 0.75 x 0.44 inches and is ideal for quantum computing applications.