NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

6AJ5
Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 7BDEIA Bulb: 5-1

Substitute Data

Preferred Substitutes ......................... 6AK5
Substitutes ................................... 6AG5 6BC5 6CE5
Source ........................................ TS DS 07/01/51 & 07/01/48

Application

Source ........................................ TS DS 07/01/51 & 07/01/48
Miniature type used as wide-band amplifier where low supply voltages are available. Requires miniature 7-contact socket.

Mechanical Data

Source ........................................ TS DS 07/01/51 & 07/01/48
Bulb .......................................... T-5 1/2
Base Type ..................................... Miniature Button 7-Pin
EIA Outline ................................... 5-1
Maximum Diameter .............................. Coated Unipotential In.
EIA Base ...................................... 7BD
Mounting Position ............................. Any

Electrical Data

Source ........................................ TS DS 07/01/51 & 07/01/48
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.175 A
Maximum Heater-Cathode Voltage ................ 90 V

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ TS DS 07/01/51 & 07/01/48
Shielded Unshielded
Input ......................................... 4.0 4.0 pf
Output ........................................ 2.8 2.1 pf
Grid to Plate ................................. 0.02 0.03 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ TS DS 07/01/51 & 07/01/48
Plate Voltage ................................. 180 V
Grid No. 2 Supply Voltage ..................... 180 V
Grid No. 2 Voltage ............................ 140 V
Positive Grid No. 1 Voltage ................... 0 V
Plate Dissipation ............................. 1.7 W
Grid No. 2 Dissipation ........................ 0.5 W
Cathode Current ............................... 18 mA
Bulb Temperature (At Hottest Point) ........... 120 °C

Characteristics and Typical Operation

Push Pull Class AB1 Amplifier
Source ........................................ TS DS 07/01/51 & 07/01/48
Plate Voltage ................................. 180 V
Grid No. 2 Voltage ............................ 75 V
Grid No. 1 Voltage ............................ -7.5 V
Peak Grid No. 1 Voltage........................ 15.0 V
Load Resistance ............................... 28K Ω
Power Output (approx) ......................... 1 W

Class A Amplifier
Source ........................................ TS DS 07/01/51 & 07/01/48
Plate Voltage ................................. 28 V
Grid No. 2 Voltage ............................ 28 V
Grid No. 1 Voltage ............................ -1.0 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 200 Ω
Amplification Factor .......................... 250
Plate Resistance (approx) ..................... 90K Ω
Transconductance .............................. 2750 µMho
Plate Current ................................. 3 mA
Grid No. 2 Current ............................ 1.2 mA

A horizontal ribbon.

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A horizontal ribbon.

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Mon, 28 Nov 2022 02:14:47 -0700