NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

15
Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 5FEIA Bulb: 12-6
Source ........................................ RCA RC-13 - 1937

Application

Source ........................................ RCA RC-13 - 1937
Glass type used as rf amplifier in battery-operated receivers.

Mechanical Data

Source ........................................ RCA RC-13 - 1937
Bulb .......................................... ST-12
Base Type ..................................... Small 5-Pin
EIA Outline ................................... 12-6
EIA Base ...................................... 5F
Top Cap ....................................... Small Metal
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA RC-13 - 1937
Filament Voltage .............................. 2 DC V
Filament Current .............................. 0.22 A

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ RCA RC-13 - 1937
Input ......................................... 2.35 pf
Output ........................................ 7.8 pf
Grid to Plate ................................. 0.01 pf

Maximum Ratings (Design Center Values)

Triode
Source ........................................ RCA RC-13 - 1937
Plate Voltage ................................. 135 V

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-13 - 1937
Plate Voltage ................................. 135 V
Grid No. 2 Voltage ............................ 67.5 V
Grid No. 1 Voltage ............................ -1.5 V
Plate Resistance (approx) ..................... 800K Ω
Transconductance .............................. 750 µMho
Plate Current ................................. 1.85 mA
Grid No. 2 Current ............................ 0.3 mA

Class A Amplifier
Source ........................................ RCA RC-13 - 1937
Plate Voltage ................................. 67.5 V
Grid No. 2 Voltage ............................ 67.5 V
Grid No. 1 Voltage ............................ -1.5 V
Plate Resistance (approx) ..................... 630K Ω
Transconductance .............................. 710 µMho
Plate Current ................................. 1.85 mA
Grid No. 2 Current ............................ 0.3 mA

A horizontal ribbon.

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A horizontal ribbon.

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Thu, 30 Jun 2022 06:56:54 -0700