NJ7P SQL Tube Database Query

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6AG9
Medium-Mu Triode - Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 12HEEIA Bulb: 9-59

Substitute Data

Preferred Substitutes ......................... 6AL9
Source ........................................ GE DS 1/67

Application

Source ........................................ GE DS 1/67
Duodecar type with frame grid pentode unit used in television receiver applications. The pentode unit is used as a video amplifier; the triode unit as an agc amplifier. Requires duodecar 12-contact socket.

Mechanical Data

Source ........................................ GE DS 1/67
Bulb .......................................... T-9
Base Type ..................................... E12 Button 12-pin
EIA Outline ................................... 9-59
EIA Base ...................................... 12HE
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ GE DS 1/67
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.82 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
Source ........................................ GE DS 1/67
Input ......................................... 3.6 pf
Output ........................................ 2.2 pf
Grid to Plate ................................. 2.8 pf

Pentode
Source ........................................ GE DS 1/67
Input ......................................... 17 pf
Output ........................................ 6.5 pf
Grid to Plate ................................. 0.16 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ GE DS 1/67
Plate Voltage ................................. 330 V
Grid No. 2 Voltage ............................ 200 V
Positive Grid No. 1 Voltage ................... 0 V
Plate Dissipation ............................. 10 W
Grid No. 2 Dissipation ........................ 1.5 W
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 100K Ω
Self Bias .................................. 250K Ω

Triode
Source ........................................ GE DS 1/67
Plate Voltage ................................. 330 V
Plate Dissipation ............................. 1.1 W
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 500K Ω
Self Bias .................................. 1M Ω

Characteristics and Typical Operation

Triode Class A Amplifier
Source ........................................ GE DS 1/67
Plate Voltage ................................. 150 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 350 Ω
Amplification Factor .......................... 39
Plate Resistance (approx) ..................... 8500 Ω
Transconductance .............................. 4600 µMho
Plate Current ................................. 6.2 mA
Grid No. 1 Voltage for Ib ..................... 20 µa @ -7 V

Pentode Class A Amplifier
Source ........................................ GE DS 1/67
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 150 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 56 Ω
Plate Resistance (approx) ..................... 40K Ω
Transconductance .............................. 30K µMho
Plate Current ................................. 28 mA
Grid No. 2 Current ............................ 5.6 mA
Grid No. 1 Voltage for Ib ..................... 100 µa @ -5.4 V

Pentode Class A Amplifier
Source ........................................ GE DS 1/67
Plate Voltage ................................. 55 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage ............................ 0 V
Plate Current ................................. 56 mA
Grid No. 2 Current ............................ 21 mA

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Thu, 29 Sep 2022 23:46:25 -0700