231D WE "engraved base" like new round disc getter halo around 1930 (1.8ma)
$ 99.99
1 tube) 231D WE "engraved base" like new round disc getter halo around 1930 (1.8ma Gm=500)
General Information
3V Filament @ 60ma, Vplate=90V, Iplate=2.1ma, Mu=8.4, Gm=510, Rp=16Kohms, Pout=4.5mW
Similar to UV-199 and 864
See more: vacuum tube
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