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Preferred Substitutes ......................... 7408
Substitutes ................................... 1614
Source ........................................ RCA RC-29 - 1975
Source ........................................ RCA RC-29 - 1975
Glass octal type used as output amplifiers in automobile, battery-operated, and other receivers in which reduced plate-current drain is desirable. Requires octal socket and may be mounted in any position.
Source ........................................ RCA RC-29 - 1975
It is equivalent in performance to type 6AQ5. Refer to type 6AQ5 for characteristic curves.
Source ........................................ RCA RC-29 - 1975
Bulb .......................................... T-9
Base Type ..................................... Int or short Int Octal
EIA Outline ................................... 9-11 9-41
EIA Base ...................................... 7S
Mounting Position ............................. Any
Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.45 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
Pentode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 9.5 pf
Output ........................................ 7.5 pf
Grid to Plate ................................. 0.7 pf
Pentode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 315 V
Grid No. 2 Voltage ............................ 285 V
Plate Dissipation ............................. 12 W
Grid No. 2 Dissipation ........................ 2 W
Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 180 V
Grid No. 2 Voltage ............................ 180 V
Grid No. 1 Voltage ............................ -8.5 V
Peak Grid No. 1 Voltage........................ 8.5 V
Plate Resistance (approx) ..................... 58K Ω
Transconductance .............................. 3700 µ
Plate Current (Zero Signal) ................... 29 mA
Plate Current (Maximum Signal) ................ 30 mA
Grid No. 2 Current (Zero Signal) .............. 3 mA
Grid No. 2 Current (Maximum Signal) ........... 4 mA
Load Resistance ............................... 5.5K Ω
Power Output (approx) ......................... 2 W
Total Harmonic Distortion ..................... 8 %
Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 250 V
Grid No. 1 Voltage ............................ -12.5 V
Peak Grid No. 1 Voltage........................ 12.5 V
Plate Resistance (approx) ..................... 52K Ω
Transconductance .............................. 4100 µ
Plate Current (Zero Signal) ................... 45 mA
Plate Current (Maximum Signal) ................ 47 mA
Grid No. 2 Current (Zero Signal) .............. 4.5 mA
Grid No. 2 Current (Maximum Signal) ........... 7 mA
Load Resistance ............................... 5K Ω
Power Output (approx) ......................... 4.5 W
Total Harmonic Distortion ..................... 8 %
Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 315 V
Grid No. 2 Voltage ............................ 225 V
Grid No. 1 Voltage ............................ -13 V
Peak Grid No. 1 Voltage........................ 13 V
Plate Resistance (approx) ..................... 77K Ω
Transconductance .............................. 3750 µ
Plate Current (Zero Signal) ................... 34 mA
Plate Current (Maximum Signal) ................ 35 mA
Grid No. 2 Current (Zero Signal) .............. 2.2 mA
Grid No. 2 Current (Maximum Signal) ........... 6 mA
Load Resistance ............................... 8.5K Ω
Power Output (approx) ......................... 5.5 W
Total Harmonic Distortion ..................... 12 %
Class AB1 Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 250 V
Grid No. 1 Voltage ............................ -15 V
Peak Grid No. 1 Voltage........................ 30 V
Plate Resistance (approx) ..................... 60K Ω
Transconductance .............................. 3750 µ
Plate Current (Zero Signal) ................... 70 mA
Plate Current (Maximum Signal) ................ 79 mA
Grid No. 2 Current (Zero Signal) .............. 5 mA
Grid No. 2 Current (Maximum Signal) ........... 13 mA
Load Resistance ............................... 10K Ω
Power Output (approx) ......................... 10 W
Total Harmonic Distortion ..................... 5 %
Class AB1 Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 285 V
Grid No. 2 Voltage ............................ 285 V
Grid No. 1 Voltage ............................ -19 V
Peak Grid No. 1 Voltage........................ 38 V
Plate Resistance (approx) ..................... 65K Ω
Transconductance .............................. 3600 µ
Plate Current (Zero Signal) ................... 70 mA
Plate Current (Maximum Signal) ................ 92 mA
Grid No. 2 Current (Zero Signal) .............. 4 mA
Grid No. 2 Current (Maximum Signal) ........... 13.5 mA
Load Resistance ............................... 8K Ω
Power Output (approx) ......................... 14 W
Total Harmonic Distortion ..................... 3.5 %
Class C Amplifier/Oscillator
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 300 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 1 Voltage ............................ -45 V
Grid No. 1 Current ............................ 2.5 mA
Plate Current ................................. 60 mA
Grid No. 2 Current ............................ 7.5 mA
Driving Power ................................. 0.3 W
Power Output (approx) ......................... 12 W
Class C Modulated Amplifier (Plate)
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 1 Voltage ............................ -45 V
Grid No. 1 Current ............................ 2 mA
Plate Current ................................. 60 mA
Grid No. 2 Current ............................ 6 mA
Driving Power ................................. 0.4 W
Power Output (approx) ......................... 10 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
Thu, 02 Feb 2023 04:55:03 -0700