Note: Please do not link down into my pages. I change this directory structure often and your links will not work correctly.
![]() | ![]() |
Preferred Substitutes ......................... 6SN7GTA
Substitutes ................................... 6BL7 6BX7GT
Source ........................................ RCA RC-15 - 1947
Source ........................................ RCA RC-15 - 1947
Glass octal type used as phase inverter or resistance-coupled amplifier in radio equipment. Requires octal socket and may be mounted in any position. Each triode unit is independent of the other except for the common heater.
Source ........................................ RCA RC-15 - 1947
Bulb .......................................... T-9
Base Type ..................................... Int or Short Int Shell Octal 8-Pin
EIA Outline ................................... 9-11 9-41
EIA Base ...................................... 8BD
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any
Source ........................................ RCA RC-15 - 1947
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.6 A
Maximum Heater-Cathode Voltage
Heater Positive with Respect to Cathode
DC Component ............................ 90 V
Heater Negative with Respect to Cathode
DC Component ............................ 90 V
Triode 1
Source ........................................ RCA RC-15 - 1947
Input ......................................... 2.8 pf
Output ........................................ 0.8 pf
Grid to Plate ................................. 3.8 pf
Triode 2
Source ........................................ RCA RC-15 - 1947
Input ......................................... 3.0 pf
Output ........................................ 1.2 pf
Grid to Plate ................................. 4.0 pf
Each Triode
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 300 V
Plate Dissipation ............................. 2.5 W
Cathode Current ............................... 20 mA
Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -8 V
Amplification Factor .......................... 20
Plate Resistance (approx) ..................... 7.7K Ω
Transconductance .............................. 2600 µ
Plate Current ................................. 9 mA
Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 90 V
Grid No. 1 Voltage ............................ 0 V
Amplification Factor .......................... 20
Plate Resistance (approx) ..................... 6.7K Ω
Transconductance .............................. 3000 µ
Plate Current ................................. 10 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
Thu, 02 Feb 2023 10:35:43 -0700