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Subminiature type used as output amplifier in subminiature equipment. Requires either a subminiature socket or direct soldering of the wires from the tube to circuit components.
EIA Outline ................................... 3-3
EIA Base ...................................... 8DL
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.35 A
Pentode
Input ......................................... 5.0 pf
Output ........................................ 5.5 pf
Grid to Plate ................................. 0.13 pf
Pentode
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 150 V
Plate Dissipation ............................. 3.0 W
Grid No. 2 Dissipation ........................ 0.33 W
Class A Amplifier
Plate Voltage ................................. 100 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 270 Ω
Plate Resistance (approx) ..................... 20K Ω
Transconductance .............................. 3500 µ
Plate Current ................................. 25 mA
Grid No. 2 Current ............................ 1.5 mA
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
Mon, 30 Jan 2023 00:26:56 -0700