NJ7P SQL Tube Database Query

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6AB7
Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 8NEIA Bulb: 8-1

Substitute Data

Preferred Substitutes ......................... 1853
Substitutes ................................... 6AC7 6AJ7 6SK7
Source ........................................ RCA DS 12/01/41

Application

Source ........................................ RCA DS 12/01/41
Metal type used in rf and if stages or picture amplifier of television receivers particularly those employing automatic-gain control. Tube requires octal socket.

Mechanical Data

Source ........................................ RCA DS 12/01/41
Bulb .......................................... MT-8
Base Type ..................................... Small Wafer Octal 8-pin
EIA Outline ................................... 8-1
EIA Base ...................................... 8N
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA DS 12/01/41
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.45 A

Direct Interelectrode Capacitances (approx)

8
Source ........................................ RCA DS 12/01/41
Input ......................................... 5 pf
Output ........................................ 0.015 pf
Grid to Plate ................................. pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ RCA DS 12/01/41
Plate Voltage ................................. 300 V
Grid No. 2 Supply Voltage ..................... 300 V
Grid No. 2 Voltage ............................ 200 V
Plate Dissipation ............................. 3.75 W
Grid No. 2 Dissipation ........................ 0.65 W

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA DS 12/01/41
Plate Voltage ................................. 300 V
Grid No. 3 Voltage ............................ 0 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 1 Voltage ............................ -3 V
Amplification Factor .......................... 3500
Plate Resistance (approx) ..................... 700K Ω
Transconductance .............................. 5000 µMho
Plate Current ................................. 12.5 mA
Grid No. 2 Current ............................ 3.2 mA

Class A Amplifier
Source ........................................ RCA DS 12/01/41
Plate Voltage ................................. 300 V
Grid No. 3 Voltage ............................ 0 V
Grid No. 2 Voltage ............................ 200 V
Grid No. 2 Dropping Resistor .................. 30K Ω
Grid No. 1 Voltage ............................ -3 V
Amplification Factor .......................... 3500
Plate Resistance (approx) ..................... 700K Ω
Transconductance .............................. 5000 µMho
Plate Current ................................. 12.5 mA
Grid No. 2 Current ............................ 3.2 mA

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Fri, 19 Aug 2022 23:15:15 -0700