This "742 PG" seems found to be nowhere in any place. What is the best SMD diode that can replace it?
It is from Lenze PCB for the 8211E variable frequency drive.
Please show me the way to replace it with an equivalent one.
Electronic – How to replace this SMD diode
diodesintegrated-circuitreplacementsurface-mount
Best Answer
The chances are good that this is a 1SMA4742 12 volt Zener diode.
The datasheet is from a different manufacturer, but I'm pretty sure it is the part you need. Other companies that make the 1SMA4742 also mark them "472."
The "PG" is probably a date code. The comment from tlfong01 suggests it might be code indication packaging material. That may well be true.
From looking around, it seems the 1SMA4742 is a surface mount version of the 1N4742 12V Zener diode. The 1N4742 comes in a conventional through hole housing, and may be more commonly available.