NJ7P SQL Tube Database Query

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75
Twin Diode - High-Mu Triode

EIA Base & Outline

EIA Base: 6GEIA Bulb: 12-6

Substitute Data

Substitutes ................................... 6SZ7
Source ........................................ RCA RC-13 - 1937

Application

Glass type used as combined detector, amplifier, and avc tube in radio receivers. Requires six-contact socket.

Mechanical Data

Bulb .......................................... ST-12
Base Type ..................................... Small 6-Pin
EIA Outline ................................... 12-6
EIA Base ...................................... 6G
Top Cap ....................................... Small Metal
Mounting Position ............................. Any

Electrical Data

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

Direct Interelectrode Capacitances (approx)

Triode
Input ......................................... 3.8 pf
Output ........................................ 1.7 pf
Grid to Plate ................................. 1.7 pf

Maximum Ratings (Design Center Values)

Triode
Plate Voltage ................................. 250 V
Cathode Current ............................... mA
Grid No. 1 Circuit Resistance
Fixed Bias ................................. Ω
Self Bias .................................. Ω
Bulb Temperature (At Hottest Point) ........... °C

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -2 V
Amplification Factor .......................... 100
Plate Resistance (approx) ..................... 91K Ω
Transconductance .............................. 1100 µMho
Plate Current ................................. 0.8 mA

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Sat, 25 Jun 2022 16:01:30 -0700