NJ7P SQL Tube Database Query

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5875
Sharp-Cutoff Pentode

EIA Base & Outline

Application

Subminiature type used as a 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 ................................... 2-1
EIA Base ...................................... 1AD4

Electrical Data

Heater Voltage ................................ 1.25 DC V
Heater Current ................................ 0.1 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 4.0 pf
Output ........................................ 4.0 pf
Grid to Plate ................................. 0.03 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 90 V
Grid No. 2 Voltage ............................ 90 V

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 90 V
Grid No. 2 Voltage ............................ 90 V
Grid No. 1 Voltage ............................ -0 V
Transconductance .............................. 2500 µ
Plate Current ................................. 3.5 mA
Grid No. 2 Current ............................ 1.0 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

Tue, 21 Mar 2023 04:09:29 -0700