NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

5972
Remote-Cutoff Pentode

EIA Base & Outline

EIA Base: 1AD4EIA Bulb: 2-1
Source ........................................ GE - 1973

Application

Subminiature type used as rf or if amplifier and oscillator in subminiature equipment. Requires either a subminiature socket or direct soldering of the wires from the tube to circuit components.

Mechanical Data

EIA Outline ................................... 2-1
EIA Base ...................................... 1AD4

Electrical Data

Heater Voltage ................................ 1.25 V
Heater Current ................................ 0.06 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 4.3 pf
Output ........................................ 4.1 pf
Grid to Plate ................................. 0.01 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 75 V
Grid No. 2 Voltage ............................ 75 V

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 67.5 V
Grid No. 2 Voltage ............................ 67.5 V
Grid No. 1 Voltage ............................ -0 V
Plate Resistance (approx) ..................... 1M Ω
Transconductance .............................. 1300 µMho
Plate Current ................................. 2.5 mA
Grid No. 2 Current ............................ 0.8 mA

Class A Amplifier
Plate Voltage ................................. 45 V
Grid No. 2 Voltage ............................ 45 V
Grid No. 1 Voltage ............................ -0 V
Plate Resistance (approx) ..................... 800K Ω
Transconductance .............................. 1100 µMho
Plate Current ................................. 1.5 mA
Grid No. 2 Current ............................ 0.4 mA

A horizontal ribbon.

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A horizontal ribbon.

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Sat, 25 Mar 2023 19:34:29 -0700