NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

6112
High-Mu Twin Triode

EIA Base & Outline

EIA Base: 8DGEIA Bulb: 3-1
Source ........................................ GE - 1973

Application

Subminiature type used as a general purpose amplifier in subminiature equipment. Requires either a subminiature socket or direct soldering of the wires from the tube to circuit components.

Mechanical Data

EIA Outline ................................... 3-1
EIA Base ...................................... 8DG

Electrical Data

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

Direct Interelectrode Capacitances (approx)

Each Section
Input ......................................... 1.9 pf
Output ........................................ 1.5 pf
Grid to Plate ................................. 1.0 pf

Maximum Ratings (Design Center Values)

Each Section
Plate Voltage ................................. 165 V
Plate Dissipation ............................. 0.3 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 150 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 820 Ω
Amplification Factor .......................... 70
Plate Resistance (approx) ..................... 28K Ω
Transconductance .............................. 2500 µMho
Plate Current ................................. 1.75 mA

Class A Amplifier
Plate Voltage ................................. 100 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 1500 Ω
Amplification Factor .......................... 70
Plate Resistance (approx) ..................... 39K Ω
Transconductance .............................. 1800 µMho
Plate Current ................................. 0.8 mA

A horizontal ribbon.

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A horizontal ribbon.

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Sat, 25 Mar 2023 04:51:09 -0700