NJ7P SQL Tube Database Query

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1E8
Pentagrid Converter

EIA Base & Outline

Substitute Data

Substitutes ................................... 1C8

Mechanical Data

Bulb .......................................... T-3
EIA Outline ................................... 3-5
EIA Base ...................................... 8CN

Electrical Data

Filament Voltage .............................. 1.25 DC V
Filament Current .............................. 0.04 A

Characteristics and Typical Operation

Converter
Plate Voltage ................................. 45 V
Grid No. 2 Voltage ............................ 45 V
Grid No. 1 Voltage ............................ 0 V
Plate Resistance (approx) ..................... 400K Ω
Transconductance .............................. 150 µ
Plate Current ................................. 0.6 mA
Grid No. 2 Current ............................ 1.1 mA

Converter
Plate Voltage ................................. 67.5 V
Grid No. 2 Voltage ............................ 67.5 V
Grid No. 1 Voltage ............................ 0 V
Plate Resistance (approx) ..................... 400K Ω
Transconductance .............................. 150 µ
Plate Current ................................. 1.0 mA
Grid No. 2 Current ............................ 1.5 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

Fri, 09 Dec 2022 05:02:15 -0700