NJ7P SQL Tube Database Query

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6612
RF Pentode

EIA Base & Outline

Application

Subminiature type used as rf or if 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 ................................... 2-1
EIA Base ...................................... 512AX

Electrical Data

Filament Voltage .............................. 1.25 V
Filament Current .............................. 0.08 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 5.5 pf
Output ........................................ 4.2 pf
Grid to Plate ................................. 0.01 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 50 V
Grid No. 2 Voltage ............................ 50 V
Plate Dissipation ............................. 0.2 W
Grid No. 2 Dissipation ........................ 0.05 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 30 V
Grid No. 2 Voltage ............................ 30 V
Grid No. 1 Voltage ............................ 0 V
Plate Resistance (approx) ..................... 180K Ω
Transconductance .............................. 3000 µ
Plate Current ................................. 3.0 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

Wed, 29 Mar 2023 06:54:06 -0700