NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

RK66
Power Pentode

EIA Base & Outline

EIA Base: 5J

Mechanical Data

EIA Base ...................................... 5J

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.5 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 12 pf
Output ........................................ 10.5 pf
Grid to Plate ................................. 0.25 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 300 V
Plate Dissipation ............................. 30 W
Grid No. 2 Dissipation ........................ 3.5 W

Characteristics and Typical Operation

Class C Oscillator/Amplifier
Plate Voltage ................................. 600 V
Grid No. 2 Voltage ............................ 300 V
Grid No. 1 Voltage ............................ -60 V
Grid No. 1 Current ............................ 5 mA
Plate Current ................................. 90 mA
Grid No. 2 Current ............................ 11 mA
Driving Power ................................. 0.5 W
Power Output (approx) ......................... 40 W

Class C Modulated Amplifier (Plate)
Plate Voltage ................................. 500 V
Grid No. 1 Voltage ............................ -50 V
Grid No. 1 Current ............................ 3.2 mA
Plate Current ................................. 75 mA
Grid No. 2 Current ............................ 8 mA
Driving Power ................................. 0.23 W
Power Output (approx) ......................... 25 W

A horizontal ribbon.

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A horizontal ribbon.

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Thu, 02 Feb 2023 05:27:38 -0700