NJ7P SQL Tube Database Query

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1AF5
Diode - Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 6AUEIA Bulb: 5-2

Substitute Data

Substitutes ................................... 1AR5 1S5

Mechanical Data

Bulb .......................................... T-5 1/2
EIA Outline ................................... 5-2
EIA Base ...................................... 6AU

Electrical Data

Filament Voltage .............................. 1.4 DC V
Filament Current .............................. 0.025 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 2.3 pf
Output ........................................ 2.8 pf
Grid to Plate ................................. 0.17 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 110 V
Grid No. 2 Voltage ............................ 110 V

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 67.5 V
Grid No. 2 Voltage ............................ 67.5 V
Grid No. 1 Voltage ............................ 0 V
Plate Resistance (approx) ..................... 2.8M Ω
Transconductance .............................. 550 µMho
Plate Current ................................. 0.7 mA
Grid No. 2 Current ............................ 0.25 mA

Class A Amplifier
Plate Voltage ................................. 90 V
Grid No. 2 Voltage ............................ 90 V
Grid No. 1 Voltage ............................ 0 V
Plate Resistance (approx) ..................... 2M Ω
Transconductance .............................. 600 µMho
Plate Current ................................. 1.1 mA
Grid No. 2 Current ............................ 0.4 mA

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Sat, 25 Mar 2023 19:31:09 -0700