What type of diodes are these?

[John Lyons]

Anyone recognise these (black with yellow dot)
I salvaged this board from a 60's camera flash. I know that the clear glass ones are germanium.
I assume these are diodes because they have orienting dots.... any ideas?

[hippo]

I don't know anything about that diodes, but your wood works are really cool. Do you make guitars too?

[blustrat]

Looks like some germanium diodes i see.
Bye.

[Dai H.]

I would guess silicon. I have some which are the same ones as in a Shin-ei octave pedal which look roughly similar (big, molded? package as opposed to say a 1N4007). (old ones, that is)

[John Lyons]

Hippo
I just make amps and pedals, I've refinished some guitars but not made them from scratch. I have a few wooden pedals left for sale, let me know if you are interested in anything you see.

I was hoping these were something other than silicon diodes but I guess that makes sense, they do look like silicon... Well at least I got a couple Siemens germanium diodes off the board...

[petemoore]

  Just measure the threshold voltage on 'em and put 'em with the 'like others' or use them.

[sepultura]

Yeh, I'd do that too. I have a multimeter which measures diode forward bias voltage drop, so it's easy to tell if it's ge or si. Do you have a meter which can do that? It's worth getting. They are cheap these days.

[John Lyons]

Yes, My meter has a diode test. I was just thrown of by the shape having mostly seen round diodes even in 60's circuits... Silly germans...