NJ7P SQL Tube Database Query

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1G4GT
Medium-Mu Triode

EIA Base & Outline

Substitute Data

Preferred Substitutes ......................... 1E4
Substitutes ................................... 1H4
Source ........................................ RCA RC-15 - 1947

Application

Source ........................................ RCA RC-15 - 1947
Glass octal type used in battery-operated radio receivers as detector or voltage amplifier. Requires an octal socket.

Mechanical Data

Source ........................................ RCA RC-15 - 1947
Bulb .......................................... T-9
Base Type ..................................... Octal
EIA Outline ................................... 9-11
EIA Base ...................................... 5S

Electrical Data

Source ........................................ RCA RC-15 - 1947
Filament Voltage .............................. 1.4 DC V
Filament Current .............................. 0.05 A

Maximum Ratings (Design Center Values)

Triode
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 110 V

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 90 V
Grid No. 1 Voltage ............................ -6 V
Amplification Factor .......................... 8.8
Plate Resistance (approx) ..................... 10.7K Ω
Transconductance .............................. 825 µ
Plate Current ................................. 2.3 mA

If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.

(c) 1994-2021 by William A. Beech, NJ7P

Thu, 29 Sep 2022 22:28:23 -0700