NJ7P SQL Tube Database Query

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1E4G
Medium-Mu Triode

EIA Base & Outline

EIA Base: 5SEIA Bulb: 12-8

Substitute Data

Preferred Substitutes ......................... 1G4
Substitutes ................................... 1H4
Source ........................................ ARRL HB - 1947

Mechanical Data

Source ........................................ ARRL HB - 1947
Bulb .......................................... ST-12
Base Type ..................................... Octal
EIA Outline ................................... 12-8
EIA Base ...................................... 5S

Electrical Data

Source ........................................ ARRL HB - 1947
Filament Voltage .............................. 1.4 DC V
Filament Current .............................. 0.05 A

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ ARRL HB - 1947
Plate Voltage ................................. 90 V
Grid No. 1 Voltage ............................ 0 V
Amplification Factor .......................... 14.5
Plate Resistance (approx) ..................... 11K Ω
Transconductance .............................. 1325 µMho
Plate Current ................................. 4.5 mA

Class A Amplifier
Source ........................................ ARRL HB - 1947
Plate Voltage ................................. 90 V
Grid No. 1 Voltage ............................ -3.0 V
Amplification Factor .......................... 14
Plate Resistance (approx) ..................... 17K Ω
Transconductance .............................. 825 µMho
Plate Current ................................. 1.5 mA

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Wed, 07 Dec 2022 13:14:52 -0700