NJ7P SQL Tube Database Query

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3E5
Beam Power Pentode

EIA Base & Outline

Substitute Data

Preferred Substitutes ......................... 3C4
Substitutes ................................... 3V4

Mechanical Data

Bulb .......................................... T-5 1/2
EIA Outline ................................... 5-2
EIA Base ...................................... 6BX

Electrical Data

Heater Voltage ................................ 2.8/1.4 DC V
Heater Current ................................ 0.025/0.05 A

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 110 V
Grid No. 2 Voltage ............................ 110 V

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 67.5 V
Grid No. 2 Voltage ............................ 67.5 V
Grid No. 1 Voltage ............................ -5 V
Plate Resistance (approx) ..................... 120K Ω
Transconductance .............................. 1300 µ
Load Resistance ............................... 7K Ω
Power Output (approx) ......................... 0.1 W

Class A Amplifier
Plate Voltage ................................. 90 V
Grid No. 2 Voltage ............................ 90 V
Grid No. 1 Voltage ............................ -8 V
Plate Resistance (approx) ..................... 140K Ω
Transconductance .............................. 1200 µ
Load Resistance ............................... 8K Ω
Power Output (approx) ......................... 0.2 W

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

Fri, 09 Dec 2022 04:50:10 -0700