NJ7P SQL Tube Database Query

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6AH9
Medium-Mu Triode - Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 12HJEIA Bulb: 9-58
Source ........................................ GE DS 12/70

Application

Source ........................................ GE DS 12/70
Duodecar type with frame grid used as color blanker and video output amplifier in color television receivers. Requires duodecar 12-contact socket.

Mechanical Data

Source ........................................ GE DS 12/70
Bulb .......................................... T-9
Base Type ..................................... E12-70 Button 12-Pin
EIA Outline ................................... 9-58
EIA Base ...................................... 12HJ
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ GE DS 12/70
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.9 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
Source ........................................ GE DS 12/70
Input ......................................... 15 pf
Output ........................................ 6.0 pf
Grid to Plate ................................. 0.15 pf

Triode
Source ........................................ GE DS 12/70
Input ......................................... 2.4 pf
Output ........................................ 0.4 pf
Grid to Plate ................................. 3.7 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ GE DS 12/70
Plate Voltage ................................. 400 V
Grid No. 2 Voltage ............................ 330 V
Positive Grid No. 1 Voltage ................... 0 V
Plate Dissipation ............................. 10 W
Grid No. 2 Dissipation ........................ 1 W
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 100K Ω
Self Bias .................................. 250k Ω

Triode
Source ........................................ GE DS 12/70
Plate Voltage ................................. 330 V
Plate Dissipation ............................. 2 W
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 1M Ω

Characteristics and Typical Operation

Triode Class A Amplifier
Source ........................................ GE DS 12/70
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -9 V
Amplification Factor .......................... 20
Plate Resistance (approx) ..................... 7300 Ω
Transconductance .............................. 2750 µMho
Plate Current ................................. 8 mA

Pentode Class A Amplifier
Source ........................................ GE DS 12/70
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 150 V
Grid No. 1 Voltage ............................ 0 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 122 Ω
Plate Resistance (approx) ..................... 55K Ω
Transconductance .............................. 21K µMho
Plate Current ................................. 25 mA
Grid No. 2 Current ............................ 6 mA
Grid No. 1 Voltage for Ib ..................... 100 µa @ -7.2 V

Pentode Class A Amplifier
Source ........................................ GE DS 12/70
Plate Voltage ................................. 50 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage ............................ 0 V
Plate Current ................................. 76 mA
Grid No. 2 Current ............................ 32 mA
Grid No. 1 Voltage for Ib ..................... 100 µa @ -18 V

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Mon, 03 Oct 2022 17:52:58 -0700