NJ7P SQL Tube Database Query

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6AU6WA
Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 7BKEIA Bulb: 5-2
Source ........................................ TungSol

Application

Source ........................................ TungSol
Miniature type used in compact radio equipment as an rf amplifier especially in high-frequency, wide-band applications. It is also used as a limiter tube in FM equipment. Tube requires miniature 7-contact socket and may be mounted in any position.

Mechanical Data

Source ........................................ TungSol
Bulb .......................................... T-5 1/2
Base Type ..................................... Miniature Button 7-Pin
EIA Outline ................................... 5-2
EIA Base ...................................... 7BK
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ TungSol
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A
Heater Warm-up Time ........................... 11 s
Maximum Heater-Cathode Voltage ................ 100 V

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ TungSol
Shielded Unshielded
Input ......................................... 5.5 5.5 pf
Output ........................................ 5.0 5.0 pf
Grid to Plate ................................. 0.0035 0.0035 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ TungSol
Plate Voltage ................................. 330 V
Grid No. 2 Voltage ............................ 165 V
Plate Dissipation ............................. 3.3 W
Grid No. 2 Dissipation ........................ 0.7 W
Bulb Temperature (At Hottest Point) ........... 165 °C

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ TungSol
Plate Voltage ................................. 100 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 150 Ω
Plate Resistance (approx) ..................... 500K Ω
Transconductance .............................. 3900 µMho
Plate Current ................................. 5 mA
Grid No. 2 Current ............................ 2.1 mA
Grid No. 1 Voltage for Ib ..................... 10 µa @ -4.2 V

Class A Amplifier
Source ........................................ TungSol
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 100 Ω
Plate Resistance (approx) ..................... 1.5M Ω
Transconductance .............................. 4500 µMho
Plate Current ................................. 7.6 mA
Grid No. 2 Current ............................ 3 mA
Grid No. 1 Voltage for Ib ..................... 10 µa @ -5.5 V

Class A Amplifier
Source ........................................ TungSol
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 150 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 68 Ω
Plate Resistance (approx) ..................... 1M Ω
Transconductance .............................. 5200 µMho
Plate Current ................................. 10.6 mA
Grid No. 2 Current ............................ 4.3 mA
Grid No. 1 Voltage for Ib ..................... 10 µa @ -6.5 V

Class A Amplifier (Triode Connected)
Source ........................................ TungSol
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -4 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 330 Ω
Amplification Factor .......................... 36
Plate Resistance (approx) ..................... 7.5K Ω
Transconductance .............................. 4800 µMho
Plate Current ................................. 12.2 mA

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Thu, 18 Aug 2022 00:37:57 -0700