Can somebody please I.D. these diodes...

[peteb2]

They at least measure as a diode on my DMM diode function but the color code is referring to perhaps a zener voltage? It's an old switchmode style circuit too. I faintly recall seeing this kind of package in the past but never thought to learn what they truly are... Thanks.   

[schenkzoola]

This is a MELF package.  See the following link, page 3.
https://www.vishay.com/docs/88912/diodesgroupbodymarking.pdf