NJ7P SQL Tube Database Query

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6397
Power Amplifier Tube

EIA Base & Outline

Application

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

Mechanical Data

EIA Base ...................................... 6CL

Electrical Data

Filament Voltage .............................. 2.5/1.25 V
Filament Current .............................. 0.0625/0.125 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 2.75 pf
Output ........................................ 3.0 pf
Grid to Plate ................................. 0.055 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 135 V
Grid No. 2 Voltage ............................ 135 V
Plate Dissipation ............................. 1.5 W
Grid No. 2 Dissipation ........................ 0.6 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 125 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage ............................ -7.5 V
Transconductance .............................. 1950 µ
Plate Current ................................. 7.25 mA
Grid No. 2 Current ............................ 1.2 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, 04 Jul 2022 17:45:10 -0700