NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

5987
Low-Mu Triode

EIA Base & Outline

EIA Base: 8DMEIA Bulb: 3-4
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 ................................... 3-4
EIA Base ...................................... 8DM

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.45 A

Direct Interelectrode Capacitances (approx)

Triode
Input ......................................... 3.2 pf
Output ........................................ 5.0 pf
Grid to Plate ................................. 3.2 pf

Maximum Ratings (Design Center Values)

Triode
Plate Voltage ................................. 165 V
Plate Dissipation ............................. 4.0 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 100 V
Grid No. 1 Voltage ............................ -18 V
Amplification Factor .......................... 4.1
Transconductance .............................. 1850 µMho
Plate Current ................................. 9.0 mA

A horizontal ribbon.

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A horizontal ribbon.

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Fri, 19 Aug 2022 07:17:07 -0700