NJ7P SQL Tube Database Query

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A horizontal ribbon.

RK48
Power Pentode

EIA Base & Outline

EIA Base: F64

Mechanical Data

EIA Base ...................................... F64

Electrical Data

Heater Voltage ................................ 10 V
Heater Current ................................ 5.0 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 17 pf
Output ........................................ 13 pf
Grid to Plate ................................. 0.13 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 2000 V
Grid No. 2 Voltage ............................ 400 V
Plate Dissipation ............................. 100 W
Grid No. 2 Dissipation ........................ 22 W

Characteristics and Typical Operation

Class C Amplifier
Plate Voltage ................................. 2000 V
Grid No. 2 Voltage ............................ 400 V
Grid No. 1 Voltage ............................ -100 V
Grid No. 1 Current ............................ 6.5 mA
Plate Current ................................. 180 mA
Grid No. 2 Current ............................ 40 mA
Driving Power ................................. 1.0 W
Power Output (approx) ......................... 250 W

Class C Modulated Amplifier (Plate)
Plate Voltage ................................. 1500 V
Grid No. 2 Voltage ............................ 400 V
Grid No. 1 Voltage ............................ -100 V
Grid No. 1 Current ............................ 6.5 mA
Plate Current ................................. 148 mA
Grid No. 2 Current ............................ 50 mA
Driving Power ................................. 1.0 W
Power Output (approx) ......................... 165 W

Class C Modulated Amplifier (Grid)
Plate Voltage ................................. 1500 V
Grid No. 2 Voltage ............................ 400 V
Grid No. 1 Voltage ............................ -145 V
Grid No. 1 Current ............................ 1.5 mA
Plate Current ................................. 77 mA
Grid No. 2 Current ............................ 10 mA
Driving Power ................................. 1.6 W
Power Output (approx) ......................... 40 W

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Thu, 18 Aug 2022 18:33:10 -0700