This listing is for a strip/pack of 10 Surface Mount TL431, in SOT-23 package. Each "item" you buy is 10 TL431 devices.
I expect you already know what a TL431 is if you are looking at this listing, so just google for datasheets and tutorials and so forth as you desire.
These parts are sourced from the usual no-name chinese vendors, exact manufacturer/specifications can not be relied upon, so yeah, don't use no-name chinese parts in critical applications, for hobbiests, no problem!
SOT-23 is easy to solder by hand, just tin one pad, I usually use the "top" pin, tack that down, and then solder the other two.
All of our products are shipped from Christchurch, New Zealand using CourierPost for NZ, and Airmail for international.
