NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

5970
Twin Pentode

EIA Base & Outline

EIA Base: 8DSEIA Bulb: 3-3
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 ................................... 3-3
EIA Base ...................................... 8DS

Electrical Data

Filament Voltage .............................. 1.25 V
Filament Current .............................. 0.16 A

Direct Interelectrode Capacitances (approx)

Tetrode
Input ......................................... 3.3 pf
Output ........................................ 2.4 pf
Grid to Plate ................................. 0.1 pf

Maximum Ratings (Design Center Values)

Tetrode
Plate Voltage ................................. 45 V
Grid No. 2 Voltage ............................ 45 V

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 45 V
Grid No. 2 Voltage ............................ 45 V
Grid No. 1 Voltage ............................ -0 V
Plate Resistance (approx) ..................... 170K Ω
Transconductance .............................. 1850 µMho
Plate Current ................................. 3.0 mA
Grid No. 2 Current ............................ 0.9 mA

A horizontal ribbon.

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A horizontal ribbon.

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Wed, 08 Dec 2021 11:42:22 -0700