NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

2EG4
High-Mu Triode

EIA Base & Outline

EIA Base: 12AQEIA Bulb: 4-4

Substitute Data

Substitutes ................................... 2CW4 2DS4
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
Nuvistor type used as a grounded-cathode, neutralized rf amplifier in vhf tuners of tv and FM receivers. Requires nuvistor socket.

Mechanical Data

Source ........................................ RCA RC-29 - 1975
EIA Outline ................................... 4-4
EIA Base ...................................... 12AQ

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 1.7 V
Heater Current ................................ 0.6 A

Direct Interelectrode Capacitances (approx)

Triode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 4.3 pf
Output ........................................ 1.8 pf
Grid to Plate ................................. 0.92 pf

Maximum Ratings (Design Center Values)

Triode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 135 V
Plate Dissipation ............................. 1.5 W

Characteristics and Typical Operation

VHF Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 110 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 130 Ω
Amplification Factor .......................... 63
Plate Resistance (approx) ..................... 7000 Ω
Transconductance .............................. 9000 µMho
Plate Current ................................. 6.5 mA

VHF Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 70 V
Grid No. 1 Voltage ............................ 0 V
Amplification Factor .......................... 68
Plate Resistance (approx) ..................... 5440 Ω
Transconductance .............................. 12500 µMho
Plate Current ................................. 7 mA

A horizontal ribbon.

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A horizontal ribbon.

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Sat, 02 Jul 2022 20:41:49 -0700