18Watt.com

Hello, this is my forst post!

My name is Fábio and recently I bought four NOS tubes EL84 MICRON.
I'm trying to find some information about these tubes, like origin, or who re-branded them.

Thanks very much!

FAB

My notoriously dodgy memory says that Micron are usually rebranded Ei valves.
If they are from Ei, they might carry an "etched" code similar to a Philips group code - here is an example on a 12AX7 -



but the absence of a code might only indicate that the batch was produced for re-labelling - a common thing with Ei valves.

Thanks Dotfret

I was thinking it was a Tungsram EL84 rebranded tube.

http://www.tubemonger.com/PhotoGallery. ... ctCode=599
and
http://ep.yimg.com/ip/I/thetubestore_2057_66088175

because there are a lot os similarities with mine like the little metal tab above the mica, and the flat connexion between the pins.

But I'm not sure yet.

FAB

If they have that little tab with a number on it, they are almost certainly Tungsram.
You do find Tungsram valves without the tabs, which can be hard to identify.