NJ7P SQL Tube Database Query

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6AU7
Medium-Mu Twin Triode

EIA Base & Outline

EIA Base: 9AEIA Bulb: 6-2

Substitute Data

Preferred Substitutes ......................... 7AU7
Substitutes ................................... 6189
Source ........................................ TungSol DS 10/01/60

Mechanical Data

Source ........................................ TungSol DS 10/01/60
Bulb .......................................... T-6 1/2
EIA Outline ................................... 6-2
EIA Base ...................................... 9A
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ TungSol DS 10/01/60
Heater Voltage ................................ 6.3/3.15 V
Heater Current ................................ 0.6/0.3 A
Heater Warm-up Time ........................... 11 s
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)

Triode 1
Source ........................................ TungSol DS 10/01/60
Shielded Unshielded
Input ......................................... 1.6 1.8 pf
Output ........................................ 2.0 0.40 pf
Grid to Plate ................................. 1.5 1.55 pf

Triode 2
Source ........................................ TungSol DS 10/01/60
Shielded Unshielded
Input ......................................... 1.6 1.8 pf
Output ........................................ 2.0 0.32 pf
Grid to Plate ................................. 1.5 1.55 pf

Maximum Ratings (Design Center Values)

Each Section
Source ........................................ TungSol DS 10/01/60
Plate Voltage ................................. 300 V
Plate Dissipation ............................. 2.75 W
Cathode Current ............................... 20 mA
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 0.25M Ω
Self Bias .................................. 1M Ω

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ TungSol DS 10/01/60
Plate Voltage ................................. 100 V
Grid No. 1 Voltage ............................ 0 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 250 Ω
Amplification Factor .......................... 19.5
Plate Resistance (approx) ..................... 6250 Ω
Transconductance .............................. 3500 µMho
Plate Current ................................. 11.8 mA
Grid No. 1 Voltage for Ib ..................... 10 µa @ -24 V

Class A Amplifier
Source ........................................ TungSol DS 10/01/60
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -8.5 V
Amplification Factor .......................... 17
Plate Resistance (approx) ..................... 7700 Ω
Transconductance .............................. 2200 µMho
Plate Current ................................. 10.5 mA

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Thu, 02 Feb 2023 23:23:06 -0700