NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

1F5G
Power Pentode

EIA Base & Outline

EIA Base: 6XEIA Bulb: 12-7

Substitute Data

Substitutes ................................... 1G5 1J5
Source ........................................ RCA RC-15 - 1947

Application

Source ........................................ RCA RC-15 - 1947
Glass octal type used in output stage of battery-operated receivers. Requires an octal socket.

Mechanical Data

Source ........................................ RCA RC-15 - 1947
Bulb .......................................... ST-14
Base Type ..................................... Octal
EIA Outline ................................... 14-1
EIA Base ...................................... 6X

Electrical Data

Source ........................................ RCA RC-15 - 1947
Filament Voltage .............................. 2.0 DC V
Filament Current .............................. 0.12 A

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 90 V
Grid No. 2 Voltage ............................ 90 V
Grid No. 1 Voltage ............................ -3 V
Amplification Factor .......................... 340
Plate Resistance (approx) ..................... 240K Ω
Transconductance .............................. 1400 µMho
Plate Current ................................. 4.0 mA
Grid No. 2 Current ............................ 1.1 mA
Load Resistance ............................... 20K Ω
Power Output (approx) ......................... 0.12 W

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 135 V
Grid No. 2 Voltage ............................ 135 V
Grid No. 1 Voltage ............................ -4.5 V
Amplification Factor .......................... 340
Plate Resistance (approx) ..................... 200K Ω
Transconductance .............................. 1700 µMho
Plate Current ................................. 8 mA
Grid No. 2 Current ............................ 2.4 mA
Load Resistance ............................... 16K Ω
Power Output (approx) ......................... 0.34 W

A horizontal ribbon.

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A horizontal ribbon.

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Wed, 08 Dec 2021 21:53:00 -0700