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Preferred Substitutes ......................... 6BA8 6BH8
Substitutes ................................... 6AW8 6JL8 6LB8
Source ........................................ TungSol
Source ........................................ TungSol
Miniature type used in television receiver applications. Pentode unit is used as video amplifier, if amplifier, and agc amplifier. Triode unit is used in sync-inverter circuits. Requires miniature 9-contact socket.
Source ........................................ TungSol
Bulb .......................................... T-6 1/2
Base Type ..................................... Small Button 9-Pin
EIA Outline ................................... 6-3
EIA Base ...................................... 9DX
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any
Source ........................................ TungSol
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.6 A
Heater Warm-up Time ........................... 11 s
Maximum Heater-Cathode Voltage
Heater Positive with Respect to Cathode
DC Component ............................ 100 V
Total DC and Peak ....................... 200 V
Heater Negative with Respect to Cathode
Total DC and Peak ....................... 200 V
Pentode
Source ........................................ TungSol
Input ......................................... 7.5 pf
Output ........................................ 2.4 pf
Grid to Plate ................................. 0.044 pf
Triode
Source ........................................ TungSol
Input ......................................... 2.6 pf
Output ........................................ 0.34 pf
Grid to Plate ................................. 2.2 pf
Pentode
Source ........................................ TungSol
Plate Voltage ................................. 300 V
Grid No. 2 Voltage ............................ 300 V
Plate Dissipation ............................. 3 W
Grid No. 2 Dissipation ........................ 1 W
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 1M Ω
Self Bias .................................. 1M Ω
Triode
Source ........................................ TungSol
Plate Voltage ................................. 300 V
Plate Dissipation ............................. 2.5 W
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 0.5M Ω
Self Bias .................................. 0.25M Ω
Triode Class A Amplifier
Source ........................................ TungSol
Plate Voltage ................................. 150 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 150 Ω
Amplification Factor .......................... 40
Plate Resistance (approx) ..................... 8.2K Ω
Transconductance .............................. 4900 µ
Plate Current ................................. 9 mA
Grid No. 1 Voltage for Ib ..................... 100 µa @ -6.5 V
Pentode Class A Amplifier
Source ........................................ TungSol
Plate Voltage ................................. 200 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 82 Ω
Plate Resistance (approx) ..................... 150K Ω
Transconductance .............................. 7000 µ
Plate Current ................................. 15 mA
Grid No. 2 Current ............................ 3.4 mA
Grid No. 1 Voltage for Ib ..................... 100 µa @ -8.0 V
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 09:22:51 -0700