NJ7P SQL Tube Database Query

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6M11
Twin High-Mu Triode - Sharp-Cutoff Pentode

EIA Base & Outline

Application

Source ........................................ GE DS 04/63
Duodecar type used in general applications. Requires duodecar 12-contact socket.

Mechanical Data

Source ........................................ GE DS 04/63
Bulb .......................................... T-9
Base Type ..................................... E12-70 Button 12-Pin
EIA Outline ................................... 9-56
EIA Base ...................................... 12CA
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ GE DS 04/63
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.75 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
Total DC and Peak ....................... 200 V

Direct Interelectrode Capacitances (approx)

Each Triode
Source ........................................ GE DS 04/63
Input ......................................... 3.4 pf
Output ........................................ 0.8 pf
Grid to Plate ................................. 1.8 pf

Pentode
Source ........................................ GE DS 04/63
Input ......................................... 12.0 pf
Output ........................................ 2.8 pf
Grid to Plate ................................. 0.03 pf

Maximum Ratings (Design Center Values)

Each Triode
Source ........................................ GE DS 04/63
Plate Voltage ................................. 330 V
Positive Grid No. 1 Voltage ................... 0 V
Plate Dissipation ............................. 2.25 W
Grid No. 1 Circuit Resistance
Self Bias .................................. 680K Ω

Pentode
Source ........................................ GE DS 04/63
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 .................................. 1M Ω

Characteristics and Typical Operation

Triode Class A Amplifier
Source ........................................ GE DS 04/63
Plate Voltage ................................. 125 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 120 Ω
Amplification Factor .......................... 58
Plate Resistance (approx) ..................... 10K Ω
Transconductance .............................. 8K µ
Plate Current ................................. 8 mA
Grid No. 1 Voltage for Ib ..................... 50 µa @ -4.5 V

Pentode Class A Amplifier
Source ........................................ GE DS 04/63
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 .............................. 13K µ
Plate Current ................................. 11 mA
Grid No. 2 Current ............................ 3.4 mA
Grid No. 1 Voltage for Ib ..................... 20 µa @ -3.5 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

Thu, 30 Jun 2022 16:25:11 -0700