NJ7P SQL Tube Database Query

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6BX7GT
High-Mu Twin Triode

EIA Base & Outline

Substitute Data

Preferred Substitutes ......................... 6BL7
Substitutes ................................... 6DN7
Source ........................................ TungSol DS 01/56

Application

Source ........................................ TungSol DS 01/56
Glass octal type used as a combined vertical oscillator and vertical deflection amplifier in television receivers. Requires octal socket.

Mechanical Data

Source ........................................ TungSol DS 01/56
Bulb .......................................... T-9
Base Type ..................................... Short Intermediate Shell Octal
EIA Outline ................................... 9-41
EIA Base ...................................... 8BD
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ TungSol DS 01/56
Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.5 A
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
DC Component ............................ 200 V
Total DC and Peak ....................... 200 V

Direct Interelectrode Capacitances (approx)

Triode 1
Source ........................................ TungSol DS 01/56
Shielded Unshielded
Input ......................................... 4.4 5.0 pf
Output ........................................ 1.1 3.4 pf
Grid to Plate ................................. 4.2 4.2 pf

Triode 2
Source ........................................ TungSol DS 01/56
Shielded Unshielded
Input ......................................... 4.8 5.0 pf
Output ........................................ 1.2 3.2 pf
Grid to Plate ................................. 4.0 4.0 pf

Maximum Ratings (Design Center Values)

Each Triode
Source ........................................ TungSol DS 01/56
Plate Voltage ................................. 500 V
Negative Grid No. 1 Voltage ................... 400 V
Positive Grid No. 1 Voltage ................... 0 V
Plate Dissipation ............................. 10 W
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 2.2M Ω

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ TungSol DS 01/56
Plate Voltage ................................. 250 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 390 Ω
Amplification Factor .......................... 10
Plate Resistance (approx) ..................... 1.3K Ω
Transconductance .............................. 7600 µ
Plate Current ................................. 42 mA
Grid No. 1 Voltage for Ib ..................... 50 µa @ -40 V

Class A Amplifier
Source ........................................ TungSol DS 01/56
Plate Voltage ................................. 100 V
Grid No. 1 Voltage ............................ 0 V
Plate Current ................................. 80 mA

Triode 2 Vert Defl Amplifier
Source ........................................ TungSol DS 01/56
DC Plate Supply Voltage ....................... 500 V
Peak Positive-Pulse Plate Voltage ............. 2000 V
Peak Negative-Pulse Grid No. 1 Voltage ........ 250 V
Average Cathode Current ....................... 60 mA
Peak Cathode Current .......................... 180 mA
Plate Dissipation ............................. 10 W

Notes

Source ........................................ TungSol DS 01/56
1. Total dissipation is 12 watts for both units operating.

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

Sat, 25 Mar 2023 04:39:40 -0700