NJ7P SQL Tube Database Query

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6AK5
Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 7BDEIA Bulb: 5-1

Substitute Data

Preferred Substitutes ......................... 5591 5654
Substitutes ................................... 6AG5 6BC5 6CE5
Source ........................................ TS DS 03/01/59

Application

Source ........................................ TS DS 03/01/59
Miniature type used as RF or IF amplifiers especially in high-frequency wide-band applications at frequencies up to 400 MHz. Requires miniature 7-contact socket.

Mechanical Data

Source ........................................ TS DS 03/01/59
Bulb .......................................... T-5 1/2
Base Type ..................................... Miniature Button 7-Pin
EIA Outline ................................... 5-1
EIA Base ...................................... 7BD

Electrical Data

Source ........................................ TS DS 03/01/59
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.175 A
Maximum Heater-Cathode Voltage ................ 120 V

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ TS DS 03/01/59
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 03/01/59
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

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ TS DS 03/01/59
Plate Voltage ................................. 180 V
Grid No. 2 Voltage ............................ 120 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 180 Ω
Plate Resistance (approx) ..................... 500K Ω
Transconductance .............................. 5100 µMho
Plate Current ................................. 7.7 mA
Grid No. 2 Current ............................ 2.4 mA
Grid No. 1 Voltage for Ib ..................... 10 µa @ -8.5 V

Class A Amplifier
Source ........................................ TS DS 03/01/59
Plate Voltage ................................. 120 V
Grid No. 2 Voltage ............................ 120 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 180 Ω
Plate Resistance (approx) ..................... 300K Ω
Transconductance .............................. 5000 µMho
Plate Current ................................. 7.5 mA
Grid No. 2 Current ............................ 2.5 mA
Grid No. 1 Voltage for Ib ..................... 10 µa @ -8.5 V

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Thu, 18 Aug 2022 00:42:22 -0700