When comparing Photo-MOSFET Solid State Relays to Reed Relays, there are advantages for each technology as outlined here. This presentation has already touched on some of the advantages of Photo-MOSFET such as long life, fast switching speed, size and lack of contact bounce, as well as Reed advantages such as lower open contact isolation, closed contact resistance and leakage current. These differences can be quantified by examining the values provided in the table. Please take a few moments to review the comparison.