NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

6AG5A
Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 7BDEIA Bulb: 5-2

Substitute Data

Preferred Substitutes ......................... 6BC5
Substitutes ................................... 6CE5

Application

Miniature type used in compact radio equipment as an rf or if amplifier up to 400 MHz. Tube requires miniature 7-contact socket and may be mounted in any position.

The two cathode leads facilitate isolation of the input and output circuits thus helping to minimize degeneration.

Mechanical Data

Bulb .......................................... T-5 1/2
Base Type ..................................... Miniature Button 7-Pin
EIA Outline ................................... 5-2
EIA Base ...................................... 7BD
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 6.5 pf
Output ........................................ 1.8 pf
Grid to Plate ................................. 0.03 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 300 V
Grid No. 2 Voltage ............................ 150 V
Plate Dissipation ............................. 2 W
Grid No. 2 Dissipation ........................ 0.5 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 150 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 180 Ω
Plate Resistance (approx) ..................... 800K Ω
Transconductance .............................. 5000 µMho
Plate Current ................................. 6.5 mA
Grid No. 2 Current ............................ 2 mA

Class A Amplifier
Plate Voltage ................................. 100 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 180 Ω
Plate Resistance (approx) ..................... 600K Ω
Transconductance .............................. 4500 µMho
Plate Current ................................. 4.5 mA
Grid No. 2 Current ............................ 1.4 mA

A horizontal ribbon.

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A horizontal ribbon.

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Tue, 29 Nov 2022 01:00:20 -0700