NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

12BL6
Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 7BKEIA Bulb: 5-2

Substitute Data

Substitutes ................................... 12AF6 12CY6 12EZ6
Source ........................................ Sylvania - 1959

Application

Source ........................................ Sylvania - 1959
Miniature type used as a rf or if amplifier. This tube is designed to operate where heater and plate voltage ar supplied directly from a 12 volt battery. Requires miniature 7-contact socket.

Mechanical Data

Source ........................................ Sylvania - 1959
Bulb .......................................... T-5 1/2
Base Type ..................................... Miniature Button 7-Pin
EIA Outline ................................... 5-2
EIA Base ...................................... 7BK
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ Sylvania - 1959
Heater Voltage ................................ 10-16 V
Heater Current ................................ 0.15 A

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ Sylvania - 1959
Input ......................................... 5.5 pf
Output ........................................ 4.8 pf
Grid to Plate ................................. 0.006 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 30 V
Grid No. 2 Voltage ............................ 30 V

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 12.6 V
Grid No. 2 Voltage ............................ 12.6 V
Grid No. 1 Voltage ............................ -0.65 V
Plate Resistance (approx) ..................... 500K Ω
Transconductance .............................. 1350 µMho
Plate Current ................................. 1.35 mA
Grid No. 2 Current ............................ 0.0005 mA

A horizontal ribbon.

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A horizontal ribbon.

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Tue, 31 Jan 2023 09:38:08 -0700