NJ7P SQL Tube Database Query

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1A5GT
Power Pentode

EIA Base & Outline

Substitute Data

Preferred Substitutes ......................... 1T5
Substitutes ................................... 1C5 1Q5
Source ........................................ RCA RC-15 - 1947

Application

Source ........................................ RCA RC-15 - 1947
Glass octal type used in output stage of battery-operated receivers. Requires octal socket and may be mounted in any position.

Mechanical Data

Source ........................................ RCA RC-15 - 1947
Bulb .......................................... T-9
Base Type ..................................... Intermediate Octal 7-Pin
EIA Outline ................................... 9-11
EIA Base ...................................... 6X
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA RC-15 - 1947
Filament Voltage .............................. 1.4 DC V
Filament Current .............................. 0.05 A

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 110 V
Grid No. 2 Voltage ............................ 110 V
Bulb Temperature (At Hottest Point) ........... °C

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 85 V
Grid No. 2 Voltage ............................ 85 V
Grid No. 1 Voltage ............................ -4.5 V
Peak Grid No. 1 Voltage........................ 4.5 V
Plate Resistance (approx) ..................... 300K Ω
Transconductance .............................. 800 µ
Plate Current (Zero Signal) ................... 3.5 mA
Plate Current (Maximum Signal) ................ 3.5 mA
Grid No. 2 Current (Zero Signal) .............. 0.7 mA
Grid No. 2 Current (Maximum Signal) ........... 1.0 mA
Load Resistance ............................... 25K Ω
Power Output (approx) ......................... 0.1 W
Total Harmonic Distortion ..................... 10 %

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 90 V
Grid No. 2 Voltage ............................ 90 V
Grid No. 1 Voltage ............................ -4.5 V
Peak Grid No. 1 Voltage........................ 4.5 V
Plate Resistance (approx) ..................... 300K Ω
Transconductance .............................. 850 µ
Plate Current (Zero Signal) ................... 4.0 mA
Plate Current (Maximum Signal) ................ 4.0 mA
Grid No. 2 Current (Zero Signal) .............. 0.8 mA
Grid No. 2 Current (Maximum Signal) ........... 1.1 mA
Load Resistance ............................... 25K Ω
Power Output (approx) ......................... 0.115 W
Total Harmonic Distortion ..................... 7 %

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

Thu, 30 Jun 2022 06:55:47 -0700