NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

5969
Twin Tetrode

EIA Base & Outline

EIA Base: 8DREIA Bulb: 3-8
Source ........................................ GE - 1973

Application

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

Mechanical Data

EIA Outline ................................... 3-8
EIA Base ...................................... 8DR

Electrical Data

Filament Voltage .............................. 1.25 V
Filament Current .............................. 0.2 A

Direct Interelectrode Capacitances (approx)

Tetrode
Input ......................................... 2.5 pf
Output ........................................ 2.5 pf
Grid to Plate ................................. 0.3 pf

Maximum Ratings (Design Center Values)

Tetrode
Plate Voltage ................................. 150 V
Plate Dissipation ............................. 0.96 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 135 V
Grid No. 2 Voltage ............................ 45 V
Grid No. 1 Voltage ............................ -3.0 V
Transconductance .............................. 1700 µMho
Plate Current ................................. 6.0 mA
Grid No. 2 Current ............................ 0.6 mA

A horizontal ribbon.

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A horizontal ribbon.

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Sat, 02 Jul 2022 22:30:35 -0700