Are these zener diodes?

[ahermida]

Can anyone tell me if these two look like zener diodes?

TIA

Alf

http://www.hermidaaudio.com/diodes.jpg

[R.G.]

From the top:
- no
- maybe

[ahermida]

Thanks R.G.  Is the top one a diode at all?

Alf

[Nasse]

Looked from my old "Replacement guide for semiconductors" book which has nice tranny diode and thyristor and so on case drawings with measures. SOD-57 and SOD-64 cases looks just same. Diameter and lenght of the component looks smaller than in my book, but that may mean nothing, there reads "max" with the values.

there is BYW56 and 1N5060, 1N5061 1N5062 diode in SOD-57 case, and several others too, SOD-64 cased diode types were not so many but too many to mention here

So the upper other might be a diode, very likely :?:

(edited) oops I mean those case types were in "diodes" part of my guide, not any such in "zener" or "voltage reference" section

[R.G.]

Thanks R.G. Is the top one a diode at all?

Yeah, it's a power diode. Probably a reverse polarity protector, just at a guess.

[ahermida]

Cool.  I'll search for those SOD packages and see what shows up.

Alf

[Steve C]

Is the top one a diode at all?

Alf

It looks exactly like the unlabeled diode in the clipping section of the Fulldrive pedals I traced.  I saw some at RS and they were packaged as epoxy rectifier diodes.

[Paul Perry (Frostwave)]

That top diode is a rectifier, fo sure. I got a belt of 2000 of them at an auction some years ago.. the only problem was the legs are a trifle fat.