MMBD301LT1 diodes equivalent, silicon hot-carrier detector and switching diodes.
http://onsemi.com
*
*
*
*
Extremely Low Minority Carrier Lifetime − 15 ps (Typ) Very Low Capacitance − 1.5 pF (Max) @ VR = 15 V Low Reverse Leakage − I.
They are readily adaptable to many other fast switching RF and digital applications. They are supplied in an inexpensiv.
Image gallery