NJ7P SQL Tube Database Query

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12FT6
Twin Diode-Triode

EIA Base & Outline

EIA Base: 7BTEIA Bulb: 5-2

Substitute Data

Preferred Substitutes ......................... 12AE6
Substitutes ................................... 12AJ6 12FM6
Source ........................................ ARRL HB - 1964

Mechanical Data

Source ........................................ ARRL HB - 1964
EIA Outline ................................... 5-2
EIA Base ...................................... 7BT

Electrical Data

Source ........................................ ARRL HB - 1964
Heater Voltage ................................ 12.6 V
Heater Current ................................ 0.15 A

Direct Interelectrode Capacitances (approx)

Triode
Source ........................................ ARRL HB - 1964
Input ......................................... 1.8 pf
Output ........................................ 1.1 pf
Grid to Plate ................................. 2 pf

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ ARRL HB - 1964
Plate Voltage ................................. 30 V
Grid No. 1 Voltage ............................ 0 V
Amplification Factor .......................... 15
Plate Resistance (approx) ..................... 7.6K Ω
Transconductance .............................. 1900 µMho
Plate Current ................................. 2 mA

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This database contains data on thousands of tubes. Every effort has been made to insure the accuracy of this reference, however, I assume no liability for the results of using information contained herein.

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Complete Tube Manuals:
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Tue, 04 Oct 2022 19:08:58 -0700