NJ7P SQL Tube Database Query

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12FT6
Twin Diode-Triode

EIA Base & Outline

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 µ
Plate Current ................................. 2 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

Tue, 09 Aug 2022 07:12:56 -0700