Component ID Help

[aplmak]

Can someone help me identify what this component is and a possible replacement??? It's ID'd as "CR".... It was in a small glass tube which is now broken unfortunately.. Possibly a diode?? But what can I put in as a replacement??



This is on an Apple Portable Modem board...

Thanks in advance!

 

[trag]

It sure looks like a diode, and, I suspect, that CR, way back when they started using it, meant crystal rectifier, which would be a diode.

Without markings on the part itself, or experience with that piece of equipment, I can't guess at the part number.  Perhaps someone with mroe hands-on experience can.

Best bet, IMO, would be to find someone with a non-melted diode and check for markings on it.   I suspect that in that application, on something that old, the exact part number is not that critical as long as it conducts in one direction and not the other.

 

[techknight]

I would need to see more of what this actually is, and what it is used in to know what value it is. 

 

[aplmak]

Its an Apple Portable modem card... I have working ones I can compare to... Just have to grab one out of storage... But here is the broken board again..

 

[techknight]

Ahh, that is part of the lightning protection circuit. its likely a high voltage diode. OR even a sparkgap. 

 

[aplmak]

Techknight any suggestions on what I could throw in it's place??? 

 

[techknight]

without another card to see its part number, not really.