Please note: SMS7621-060 is being discontinued and is not recommended for new designs.
The suggested replacement
are
SMS7621-040LF, SMS7621-079LF
The SMS7621-060 is a silicon, low-barrier N-type Schottky diode
with an ultra-miniature 0201 footprint. This diode may be used in
detector circuits, sampling circuits, and mixer circuits.
The low series resistance of this low-barrier diode enables good
performance as a low-level mixer at frequencies up to 26 GHz
and higher.