NJ7P SQL Tube Database Query

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A horizontal ribbon.

6BH6
Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 7CMEIA Bulb: 5-2

Substitute Data

Preferred Substitutes ......................... 6BJ6
Substitutes ................................... 6DB6
Source ........................................ GE DS 04/57

Application

Source ........................................ GE DS 04/57
Miniature type used as rf amplifier particularly in ac/dc receivers and in mobile equipment where low heater current drain is important.

Source ........................................ GE DS 04/57
It is particularly useful in high-frequency, wide-band applications. Requires miniature seven-contact socket and may be mounted in any position.

Mechanical Data

Source ........................................ GE DS 04/57
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 04/57
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.15 A
Maximum Heater-Cathode Voltage ................ 90 V

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ GE DS 04/57
Shielded Unshielded
Input ......................................... 5.4 5.4 pf
Output ........................................ 4.4 4.4 pf
Grid to Plate ................................. 0.0035 0.0035 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ GE DS 04/57
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 ........................ 0.5 W

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ GE DS 04/57
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 150 V
Grid No. 1 Voltage ............................ -1 V
Plate Resistance (approx) ..................... 1.4M Ω
Transconductance .............................. 4600 µMho
Plate Current ................................. 7.4 mA
Grid No. 2 Current ............................ 2.9 mA
Grid No. 1 Voltage for Ib ..................... 10 µa @ -7.7 V

Class A Amplifier
Source ........................................ GE DS 04/57
Plate Voltage ................................. 100 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage ............................ -1 V
Plate Resistance (approx) ..................... 700K Ω
Transconductance .............................. 3400 µMho
Plate Current ................................. 3.6 mA
Grid No. 2 Current ............................ 1.4 mA
Grid No. 1 Voltage for Ib ..................... 10 µa @ -5.0 V

A horizontal ribbon.

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A horizontal ribbon.

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Wed, 17 Aug 2022 23:52:05 -0700