NJ7P SQL Tube Database Query

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6BJ6
Remote-Cutoff Pentode

EIA Base & Outline

Application

Source ........................................ GE DS 02/57
Miniature type used as rf amplifier in high-frequency and wide-band applications. Features high transconductance and low grid-plate capacitance. Tube requires miniature 7-contact socket and may be mounted in any position.

Mechanical Data

Source ........................................ GE DS 02/57
Bulb .......................................... T-5 1/2
Base Type ..................................... E7-1 Miniature Button 7-Pin
EIA Outline ................................... 5-2
EIA Base ...................................... 7CM
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ GE DS 02/57
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.15 A
Maximum Heater-Cathode Voltage ................ 90 V

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ GE DS 02/57
Shielded Unshielded
Input ......................................... 4.5 4.5 pf
Output ........................................ 5.5 5.5 pf
Grid to Plate ................................. 0.0035 0.0035 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ GE DS 02/57
Plate Voltage ................................. 300 V
Grid No. 2 Voltage ............................ 300 V
Negative Grid No. 1 Voltage ................... -50 V
Positive Grid No. 1 Voltage ................... 0 V
Plate Dissipation ............................. 3 W
Grid No. 2 Dissipation ........................ 0.6 W

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ GE DS 02/57
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage ............................ -1 V
Plate Resistance (approx) ..................... 1.3M Ω
Transconductance .............................. 3600 µ
Plate Current ................................. 9.2 mA
Grid No. 2 Current ............................ 3.3 mA
Grid No. 1 Voltage for Ib ..................... 10 µa @ -20 V

Class A Amplifier
Source ........................................ GE DS 02/57
Plate Voltage ................................. 100 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage ............................ -1 V
Plate Resistance (approx) ..................... 250K Ω
Transconductance .............................. 3650 µ
Plate Current ................................. 9.0 mA
Grid No. 2 Current ............................ 3.5 mA
Grid No. 1 Voltage for Ib ..................... 10 µa @ -20 V

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, 08 Feb 2023 22:19:53 -0700