NJ7P SQL Tube Database Query

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6A4
Power Pentode

EIA Base & Outline

EIA Base: 5BEIA Bulb: 14-1
Source ........................................ RCA RC-11 - 1933

Application

Source ........................................ RCA RC-11 - 1933
Glass type used in output stage of automobile receivers. Tube requires 5-contact socket.

Mechanical Data

Source ........................................ RCA RC-11 - 1933
Bulb .......................................... ST-14
Base Type ..................................... Medium 5-Pin
EIA Outline ................................... 14-1
EIA Base ...................................... 5B
Mounting Position ............................. Vertical

Electrical Data

Source ........................................ RCA RC-11 - 1933
Filament Voltage .............................. 6.3 V
Filament Current .............................. 0.3 A

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ RCA RC-11 - 1933
Plate Voltage ................................. 180 V
Grid No. 2 Voltage ............................ 180 V
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 500K Ω
Self Bias .................................. 500K Ω

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-11 - 1933
Plate Voltage ................................. 100 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage ............................ -6.5 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 615 Ω
Amplification Factor .......................... 100
Plate Resistance (approx) ..................... 83250 Ω
Transconductance .............................. 1200 µMho
Plate Current ................................. 9.0 mA
Grid No. 2 Current ............................ 1.6 mA
Load Resistance ............................... 11K Ω
Power Output (approx) ......................... 0.31 W

Class A Amplifier
Source ........................................ RCA RC-11 - 1933
Plate Voltage ................................. 135 V
Grid No. 2 Voltage ............................ 135 V
Grid No. 1 Voltage ............................ -9.0 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 545 Ω
Amplification Factor .......................... 100
Plate Resistance (approx) ..................... 52600 Ω
Transconductance .............................. 1900 µMho
Plate Current ................................. 14.0 mA
Grid No. 2 Current ............................ 2.5 mA
Load Resistance ............................... 9.5K Ω
Power Output (approx) ......................... 0.7 W

Class A Amplifier
Source ........................................ RCA RC-11 - 1933
Plate Voltage ................................. 165 V
Grid No. 2 Voltage ............................ 165 V
Grid No. 1 Voltage ............................ -11.0 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 470 Ω
Amplification Factor .......................... 100
Plate Resistance (approx) ..................... 48000 Ω
Transconductance .............................. 2100 µMho
Plate Current ................................. 20.0 mA
Grid No. 2 Current ............................ 3.5 mA
Load Resistance ............................... 8K Ω
Power Output (approx) ......................... 1.2 W

Class A Amplifier
Source ........................................ RCA RC-11 - 1933
Plate Voltage ................................. 180 V
Grid No. 2 Voltage ............................ 180 V
Grid No. 1 Voltage ............................ -12.0 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 465 Ω
Amplification Factor .......................... 100
Plate Resistance (approx) ..................... 45500 Ω
Transconductance .............................. 2200 µMho
Plate Current ................................. 22.0 mA
Grid No. 2 Current ............................ 3.9 mA
Load Resistance ............................... 8K Ω
Power Output (approx) ......................... 1.40 W

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Wed, 07 Dec 2022 13:21:02 -0700