NJ7P SQL Tube Database Query

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12DE8
Diode - Remote-Cutoff Pentode

EIA Base & Outline

Mechanical Data

Source ........................................ ARRL HB - 1964
EIA Outline ................................... 6-2
EIA Base ...................................... 9HG

Electrical Data

Source ........................................ ARRL HB - 1964
Heater Voltage ................................ 10-16 V
Heater Current ................................ 0.2 A

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ ARRL HB - 1964
Input ......................................... 5.5 pf
Output ........................................ 5.7 pf
Grid to Plate ................................. 0.006 pf

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ ARRL HB - 1964
Plate Voltage ................................. 12.6 V
Grid No. 2 Voltage ............................ 12.6 V
Grid No. 1 Voltage ............................ -0.8 V
Plate Resistance (approx) ..................... 300K Ω
Transconductance .............................. 1500 µ
Plate Current ................................. 1.3 mA
Grid No. 2 Current ............................ 0.5 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

Sat, 25 Mar 2023 19:01:15 -0700