NJ7P SQL Tube Database Query

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5977
Medium-Mu Triode

EIA Base & Outline

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 ................................... 3-1
EIA Base ...................................... 8DK

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.15 A

Direct Interelectrode Capacitances (approx)

Triode
Input ......................................... 2.0 pf
Output ........................................ 2.2 pf
Grid to Plate ................................. 1.3 pf

Maximum Ratings (Design Center Values)

Triode
Plate Voltage ................................. 180 V
Plate Dissipation ............................. 1.2 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 100 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 270 Ω
Amplification Factor .......................... 16
Transconductance .............................. 4500 µ
Plate Current ................................. 10.0 mA

If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.

(c) 1994-2021 by William A. Beech, NJ7P

Sat, 25 Jun 2022 10:08:51 -0700