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ID = 22366
Brand: Triotron (tubes) = Brand of Schrack, Austria
Tube type:  Screen-grid Tetrode 
Identical to S412N
Similar Tubes
Normally replaceable-slightly different:
  AS494 ; E442 ; E452T ; NC4b ; RENS1264

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 Top contact screw type.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Description Va = 200V, Ia = 1,5mA
Vg1 = -1,3V, Vg2 100V
Ig2 = 0,6mA, S = 0,9ma/V
Verst. faktor 700
Ri = 0,8M, Pa 1,0W
Cag1 0,003nF 
S412N: eigenes Bild
Anonymous 603 Collector

S412N: Telefunken Werkstattbuch
Wolfgang Bauer

S412N: Triotron Röhrenkatalog von 1942
Wolfgang Bauer

from Just Qvigstad

Collection of a member from A

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