NJ7P SQL Tube Database Query

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6BW11
Sharp-Cutoff Twin Pentode

EIA Base & Outline

Application

Source ........................................ GE DS 11/67
Duodecar type used in color and black-and-white television receiver applications. Unit 1 is used as a vedio amplifier; unit 2 is used in bandpass amplifier, burst amplifier, or sound if amplifier or video if amplifier. Requires duodecar 12-contact socket.

Mechanical Data

Source ........................................ GE DS 11/67
Bulb .......................................... T-9
Base Type ..................................... E12-70
EIA Outline ................................... 9-58
EIA Base ...................................... 12HD
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ GE DS 11/67
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.8 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)

Pentode 1
Source ........................................ GE DS 11/67
Input ......................................... 7.5 pf
Output ........................................ 2.8 pf
Grid to Plate ................................. 0.03 pf

Pentode 2
Source ........................................ GE DS 11/67
Input ......................................... 12.0 pf
Output ........................................ 2.8 pf
Grid to Plate ................................. 0.03 pf

Maximum Ratings (Design Center Values)

Pentode 1
Source ........................................ GE DS 11/67
Plate Voltage ................................. 330 V
Grid No. 2 Voltage ............................ 330 V
Positive Grid No. 1 Voltage ................... 0 V
Plate Dissipation ............................. 4.0 W
Grid No. 2 Dissipation ........................ 0.8 W
Grid No. 1 Circuit Resistance
Self Bias .................................. 250K Ω

Pentode 2
Source ........................................ GE DS 11/67
Plate Voltage ................................. 330 V
Grid No. 2 Voltage ............................ 330 V
Positive Grid No. 1 Voltage ................... 0 V
Plate Dissipation ............................. 3.1 W
Grid No. 2 Dissipation ........................ 0.65 W
Grid No. 1 Circuit Resistance
Self Bias .................................. 250K Ω

Characteristics and Typical Operation

Pentode 1 Class A Amplifier
Source ........................................ GE DS 11/67
Plate Voltage ................................. 125 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 56 Ω
Plate Resistance (approx) ..................... 120K Ω
Transconductance .............................. 8500 µ
Plate Current ................................. 22 mA
Grid No. 2 Current ............................ 4.8 mA
Grid No. 1 Voltage for Ib ..................... 20 µa @ -9.5 V

Pentode 2 Class A Amplifier
Source ........................................ GE DS 11/67
Plate Voltage ................................. 125 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 56 Ω
Plate Resistance (approx) ..................... 200K Ω
Transconductance .............................. 13000 µ
Plate Current ................................. 11 mA
Grid No. 2 Current ............................ 3.8 mA
Grid No. 1 Voltage for Ib ..................... 20 µa @ -3 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

Sat, 25 Mar 2023 19:58:59 -0700