You are buying 3 pieces of Aeroflex / Metelics SMMD835-SOD323 Silicon Step Recovery Diode in SOD323 SMT package. Tape and reel sealed.

Specs:

Vbr: 20V @ 10uA

Cj6: 0.3-0.7pF

T (lifetime): 15nSec

Tt: 80pSec

Datasheet: http://ams.aeroflex.com/Metelics/pdfiles/Step_Recovery_Diodes_SRD_A17037.pdf