[bigone5500]

I found this in my box of parts. I do not know where I got it from but want to know what it is.

 

[KMoffett]

Diode of some sort...signal, Zener, diac, Schottky, rectifier...Silicon, Germanium...?

Ken

 

[bigone5500]

I found this:

... but it doesn't seem to correspond with the markings on my component. I have done a lot of searching but have only come up empty handed.

 

[davenn]

The internal construction doesn't look like a diode to me ( it may be)

its possible that its a resistor or a capacitor. There was a period of years where SMD resistors and caps
were mounted inside a glass encapsulation so that they could be used as a normal through hole component

Dave

 

[bigone5500]

My above post wouldn't show the colors but here it is.

 

[(*steve*)]

I would advise you to connect it up to your multimeter and read the resistance (both ways) and using the diode test function (again. both ways).

This won't tell you if it's a zener, but it will identify resistor/cap/diode, and will also allow you to distinguish between a silicon PN junction and germanium or schottky (nether of the alternatives are likely to be zeners).

To see if it's a zener create a voltage source from one or more 9V batteries in series, and with a resistor of about 1k per volt of total battery voltage in series, measure the voltage drop of the diode connected both ways around.

 

[bigone5500]

After connecting it to my meter and doing everything I could to get a reading, I grabbed a 9v battery and touched the ends both ways and not spark. Nothing whatsoever. I think I salvaged a blown fuse of some sort.

 

[(*steve*)]

You do need to take readings.

If you get nothing from all the tests then it may be a capacitor as suggests as a possibility by Dave.

 

[Arouse1973]

Possibly a Glass Encapsulated NTC Thermistors.
Adam

 

[bigone5500]

Possibly a Glass Encapsulated NTC Thermistors.
Adam

That's what it looks like.

 

[Arouse1973]

 

[(*steve*)]

And yet there were no readings on the multimeter, even on resistance ranges?

 

[bigone5500]

No. The meter only gave me an open reading.

 

[gorgon]

Could it be a glass gas discharge device for overvoltage protection?

 

[bigone5500]

Yes! That's what it is! Looks just like it.