NJ7P SQL Tube Database Query

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5687
Medium-Mu Twin Triode

EIA Base & Outline

EIA Base: 9HEIA Bulb: 6-2
Source ........................................ TS DS - 22 Jan 48

Mechanical Data

Source ........................................ TS DS - 22 Jan 48
Bulb .......................................... T-6 1/2
EIA Outline ................................... 6-2
EIA Base ...................................... 9H
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ TS DS - 22 Jan 48
Heater Voltage ................................ 6.3/12.6 V
Heater Current ................................ 0.9/0.45 A

Direct Interelectrode Capacitances (approx)

Each Triode
Source ........................................ TS DS - 22 Jan 48
Input ......................................... 4 pf
Output ........................................ 0.45 pf
Grid to Plate ................................. 3.1 pf

Maximum Ratings (Design Center Values)

Each Triode
Source ........................................ TS DS - 22 Jan 48
Plate Voltage ................................. 500 V
Plate Input ................................... 4.2 W
Grid Current .................................. 6 mA
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 1M Ω
Self Bias .................................. 1M Ω
Bulb Temperature (At Hottest Point) ........... 220 °C

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ TS DS - 22 Jan 48
Plate Voltage ................................. 120 V
Grid No. 1 Voltage ............................ -2 V
Amplification Factor .......................... 20
Plate Resistance (approx) ..................... 2K Ω
Transconductance .............................. 10K µMho
Plate Current ................................. 34 mA
Grid No. 1 Voltage for Ib ..................... 0.1 µa @ -10 V

Class A Amplifier
Source ........................................ TS DS - 22 Jan 48
Plate Voltage ................................. 180 V
Grid No. 1 Voltage ............................ -7.0 V
Amplification Factor .......................... 17.5
Plate Resistance (approx) ..................... 2750 Ω
Transconductance .............................. 6.4K µMho
Plate Current ................................. 23 mA
Grid No. 1 Voltage for Ib ..................... 0.1 µa @ -15 V

Class A Amplifier
Source ........................................ TS DS - 22 Jan 48
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -12.5 V
Amplification Factor .......................... 16.5
Plate Resistance (approx) ..................... 4K Ω
Transconductance .............................. 4100 µMho
Plate Current ................................. 16 mA
Grid No. 1 Voltage for Ib ..................... 0.1 µa @ -21 V

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Fri, 03 Feb 2023 00:51:39 -0700