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Subminiature type used in output stages of subminiature equipment. Requires either a subminiature socket or direct soldering of the wires from the tube to circuit components.
EIA Outline ................................... 2-1
EIA Base ...................................... 2E31
Heater Voltage ................................ 1.25 V
Heater Current ................................ 0.05 A
Pentode
Plate Voltage ................................. 67.5 V
Grid No. 2 Voltage ............................ 67.5 V
Class A Amplifier
Plate Voltage ................................. 45 V
Grid No. 2 Voltage ............................ 45 V
Grid No. 1 Voltage ............................ -4.5 V
Transconductance .............................. 600 µ
Plate Current ................................. 1.4 mA
Grid No. 2 Current ............................ 0.4 mA
Load Resistance ............................... 30K Ω
Power Output (approx) ......................... 0.025 W
If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.
(c) 1994-2021 by William A. Beech, NJ7P
Tue, 28 Mar 2023 23:07:43 -0700