NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

6EH8
Medium-Mu Triode - Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 9JGEIA Bulb: 6-2

Substitute Data

Preferred Substitutes ......................... 6AU8
Substitutes ................................... 6AW8
Source ........................................ GE - 1973

Application

Source ........................................ GE - 1973
Miniature type used as a combined triode oscillator and pentode mixer in tv receivers. Requires miniature 9-contact socket.

Mechanical Data

Source ........................................ GE - 1973
Bulb .......................................... T-6 1/2
Base Type ..................................... Miniature Button 9-Pin
EIA Outline ................................... 6-2
EIA Base ...................................... 9JG
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ GE - 1973
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.45 A

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ GE - 1973
Input ......................................... 4.8 pf
Output ........................................ 2.4 pf
Grid to Plate ................................. 0.02 pf

Triode
Source ........................................ GE - 1973
Input ......................................... 2.8 pf
Output ........................................ 1.7 pf
Grid to Plate ................................. 1.8 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ GE - 1973
Plate Voltage ................................. 300 V
Grid No. 2 Voltage ............................ 300 V
Plate Dissipation ............................. 2.8 W
Grid No. 2 Dissipation ........................ 0.5 W

Triode
Source ........................................ GE - 1973
Plate Voltage ................................. 300 V
Plate Dissipation ............................. 2.5 W

Characteristics and Typical Operation

Triode Class A Amplifier
Source ........................................ GE - 1973
Plate Voltage ................................. 125 V
Grid No. 1 Voltage ............................ -1 V
Amplification Factor .......................... 40
Transconductance .............................. 7500 µMho
Plate Current ................................. 13.5 mA

Pentode Class A Amplifier
Source ........................................ GE - 1973
Plate Voltage ................................. 125 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage ............................ -1 V
Plate Resistance (approx) ..................... 170K Ω
Transconductance .............................. 6000 µMho
Plate Current ................................. 12 mA
Grid No. 2 Current ............................ 4 mA

A horizontal ribbon.

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A horizontal ribbon.

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Fri, 24 Jun 2022 18:59:02 -0700