NJ7P SQL Tube Database Query

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5797
Semiremote-Cutoff Pentode

EIA Base & Outline

Application

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

Mechanical Data

EIA Outline ................................... 3-2
EIA Base ...................................... 8CY

Electrical Data

Heater Voltage ................................ 26.5 V
Heater Current ................................ 0.045 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 4.2 pf
Output ........................................ 3.2 pf
Grid to Plate ................................. 0.024 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 50 V
Grid No. 2 Voltage ............................ 50 V
Plate Dissipation ............................. 0.8 W
Grid No. 2 Dissipation ........................ 0.25 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 26.5 V
Grid No. 2 Voltage ............................ 26.5 V
Grid No. 1 Voltage ............................ -0 V
Plate Resistance (approx) ..................... 70K Ω
Transconductance .............................. 3450 µ
Plate Current ................................. 2.8 mA
Grid No. 2 Current ............................ 0.9 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

Mon, 30 Jan 2023 00:20:31 -0700