NJ7P SQL Tube Database Query

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6JE8
High-Mu Triode - Sharp-Cutoff Pentode

EIA Base & Outline

Substitute Data

Preferred Substitutes ......................... 6HF8 6HZ8
Substitutes ................................... 6CX8 6EB8 6GN8 6JT8 6JV8 6KV8 6LY8
Source ........................................ GE - 1973

Mechanical Data

Source ........................................ GE - 1973
Bulb .......................................... T-6 1/2
EIA Outline ................................... 6-3
EIA Base ...................................... 9DX

Electrical Data

Source ........................................ GE - 1973
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.78 A

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ GE - 1973
Plate Voltage ................................. 330 V
Grid No. 2 Voltage ............................ 330 V
Plate Dissipation ............................. 5.0 W
Grid No. 2 Dissipation ........................ 2.0 W

Triode
Source ........................................ GE - 1973
Plate Voltage ................................. 300 V
Plate Dissipation ............................. 1.0 W

Characteristics and Typical Operation

Triode Class A Amplifier
Source ........................................ GE - 1973
Plate Voltage ................................. 200 V
Grid No. 1 Voltage ............................ -2 V
Amplification Factor .......................... 70
Transconductance .............................. 4200 µ
Plate Current ................................. 4.5 mA

Pentode Class A Amplifier
Source ........................................ GE - 1973
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 170 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 82 Ω
Plate Resistance (approx) ..................... 140K Ω
Transconductance .............................. 12000 µ
Plate Current ................................. 22 mA
Grid No. 2 Current ............................ 4 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, 31 Jan 2023 08:54:10 -0700