This listing is for a strip/pack of 10 Surface Mount Diodes. Each "item" you buy is 10 diodes.
SOD-323 size, that is basically the same as 0805 resistor/capacitor dimensions.
This listing is for 1N5819 (or “same as 1N5819” who really knows from China) which is your bog standard schottkey signal diode with a reverse voltage of 40v, a forward voltage of 0.38v. Being such a small package the current for these will be around 120mA I believe.
I don’t have any datasheet and they are not even marked with a manufacturer, just the S4 code, if you need specific specifics on a specification sheet, best you buy from Digikey, Mouser, RS Components or Element 14 instead!
All of our products are shipped from Christchurch, New Zealand using CourierPost for NZ, and Airmail for international.