NJ7P SQL Tube Database Query

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3-50A4
Power Triode

EIA Base & Outline

EIA Base: 3G

Mechanical Data

EIA Base ...................................... 3G

Electrical Data

Heater Voltage ................................ 5.0 V
Heater Current ................................ 4.0 A

Direct Interelectrode Capacitances (approx)

Triode
Input ......................................... 4.1 pf
Output ........................................ 0.3 pf
Grid to Plate ................................. 1.8 pf

Maximum Ratings (Design Center Values)

Triode
Plate Voltage ................................. 2000 V
Plate Dissipation ............................. 50 W

Characteristics and Typical Operation

Class C Amplifier
Plate Voltage ................................. 2000 V
Grid No. 1 Voltage ............................ -135 V
Grid No. 1 Current ............................ 45 mA
Plate Current ................................. 125 mA
Driving Power ................................. 13 W
Power Output (approx) ......................... 200 W

Class C Modulated Amplifier (Plate)
Plate Voltage ................................. 1500 V
Grid No. 1 Voltage ............................ -150 V
Grid No. 1 Current ............................ 40 mA
Plate Current ................................. 90 mA
Driving Power ................................. 11 W
Power Output (approx) ......................... 105 W

Push Pull Class B Amplifier
Plate Voltage ................................. 2000 V
Grid No. 1 Voltage ............................ -40 V
Peak Grid No. 1 Voltage........................ 255 V
Plate Current (Zero Signal) ................... 4 mA
Plate Current (Maximum Signal) ................ 167 mA
Driving Power ................................. 4.0 W
Load Resistance ............................... 27.5K Ω
Power Output (approx) ......................... 235 W

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Mon, 04 Jul 2022 16:31:51 -0700