Note: Please do not link down into my pages. I change this directory structure often and your links will not work correctly.
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EIA Outline ................................... 5-2
EIA Base ...................................... 7BF
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A
Triode 1
Input ......................................... 2.4 pf
Output ........................................ 0.5 pf
Grid to Plate ................................. 2.7 pf
Triode 2
Input ......................................... 2.4 pf
Output ........................................ 0.4 pf
Grid to Plate ................................. 2.7 pf
Triode 1
Plate Voltage ................................. 200 V
Plate Dissipation ............................. 1.0 W
Triode 2
Plate Voltage ................................. 200 V
Plate Dissipation ............................. 1.0 W
Class A Amplifier
Plate Voltage ................................. 100 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 470 Ω
Amplification Factor .......................... 28
Plate Resistance (approx) ..................... 7550 Ω
Transconductance .............................. 3700 µ
Plate Current ................................. 4.8 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
Tue, 31 Jan 2023 10:31:33 -0700