NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

1S4
Power Pentode

EIA Base & Outline

EIA Base: 7AVEIA Bulb: 5-2
Source ........................................ RCA RC-15 - 1947

Application

Source ........................................ RCA RC-15 - 1947
Miniature type used in output stage of lightweight, compact, portable, battery-operated equipment. 1S4 and 3S4 are identical except for filament arrangement. Requires miniature 7-contact socket and may be mounted in any position.

Mechanical Data

Source ........................................ RCA RC-15 - 1947
Bulb .......................................... T-5 1/2
EIA Outline ................................... 5-2
EIA Base ...................................... 7AV

Electrical Data

Source ........................................ RCA RC-15 - 1947
Filament Voltage .............................. 1.4 DC V
Filament Current .............................. 0.1 A

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 90 V
Grid No. 2 Voltage ............................ 67.5 V

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 45 V
Grid No. 2 Voltage ............................ 45 V
Grid No. 1 Voltage ............................ -4.5 V
Plate Resistance (approx) ..................... 100K Ω
Transconductance .............................. 1250 µMho
Plate Current ................................. 3.8 mA
Grid No. 2 Current ............................ 0.8 mA
Load Resistance ............................... 8000 Ω
Power Output (approx) ......................... 0.065 W

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 67.5 V
Grid No. 2 Voltage ............................ 67.5 V
Grid No. 1 Voltage ............................ -7 V
Plate Resistance (approx) ..................... 100K Ω
Transconductance .............................. 1550 µMho
Plate Current ................................. 7.2 mA
Grid No. 2 Current ............................ 1.5 mA
Load Resistance ............................... 5000 Ω
Power Output (approx) ......................... 0.18 W

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 90 V
Grid No. 2 Voltage ............................ 67.5 V
Grid No. 1 Voltage ............................ -7 V
Plate Resistance (approx) ..................... 100K Ω
Transconductance .............................. 1575 µMho
Plate Current ................................. 7.4 mA
Grid No. 2 Current ............................ 1.4 mA
Load Resistance ............................... 8000 Ω
Power Output (approx) ......................... 0.27 W

A horizontal ribbon.

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A horizontal ribbon.

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Thu, 30 Jun 2022 06:17:13 -0700