NJ7P SQL Tube Database Query

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1AC5
Power Pentode

EIA Base & Outline

Substitute Data

Preferred Substitutes ......................... 1V5
Substitutes ................................... 1AD5 1W5

Mechanical Data

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

Electrical Data

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

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 45 V
Grid No. 2 Voltage ............................ 45 V
Grid No. 1 Voltage ............................ -3 V
Plate Resistance (approx) ..................... 170K Ω
Transconductance .............................. 600 µ
Plate Current ................................. 1.0 mA
Grid No. 2 Current ............................ 0.2 mA
Load Resistance ............................... 40K Ω
Power Output (approx) ......................... 0.015 W

Class A Amplifier
Plate Voltage ................................. 67.5 V
Grid No. 2 Voltage ............................ 67.5 V
Grid No. 1 Voltage ............................ -4.5 V
Plate Resistance (approx) ..................... 150K Ω
Transconductance .............................. 750 µ
Plate Current ................................. 2.0 mA
Grid No. 2 Current ............................ 0.4 mA
Load Resistance ............................... 25K Ω
Power Output (approx) ......................... 0.05 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

Mon, 30 Jan 2023 01:26:21 -0700