help to identify the diode???



I am looking for info about 2 bad diode.
I check every diode on ST website, but don't find everything.

Anyone know the equivalent part?

http://www.geocities.com/saturnlee/Repair/burndiode/2.JPG
Diode 1:
ST
BUX
CO 19

http://www.geocities.com/saturnlee/Repair/burndiode/3.JPG
Diode 2:
ST ON
S140

.