NJ7P SQL Tube Database Query

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211
Power Triode

EIA Base & Outline

Substitute Data

Preferred Substitutes ......................... 311
Source ........................................ RCA DS 05/01/50

Mechanical Data

Bulb .......................................... ST-16
Base Type ..................................... Medium-Metal-Shell Jumbo 4-Pin, Bayonet
Maximum Overall Height ........................ 7-7/8 In.
Maximum Diameter .............................. 2-5/16 In.
EIA Base ...................................... 4AZ

Electrical Data

Heater Voltage ................................ 10 V
Heater Current ................................ 3.25 A

Direct Interelectrode Capacitances (approx)

Triode
Input ......................................... 5.4 pf
Output ........................................ 4.8 pf
Grid to Plate ................................. 14 pf

Maximum Ratings (Design Center Values)

Triode
Plate Voltage ................................. 1250 V
Plate Dissipation ............................. 100 W

Characteristics and Typical Operation

Class C Oscillator/Amplifier
Plate Voltage ................................. 1250 V
Grid No. 1 Voltage ............................ -400 V
Grid No. 1 Current ............................ 50 mA
Plate Current ................................. 175 mA
Power Output (approx) ......................... 220 W

Class C Modulated Amplifier (Plate)
Plate Voltage ................................. 1000 V
Grid No. 1 Voltage ............................ -260 V
Grid No. 1 Current ............................ 35 mA
Plate Current ................................. 150 mA
Driving Power ................................. 14 W
Power Output (approx) ......................... 100 W

Push Pull Class B Amplifier
Plate Voltage ................................. 1250 V
Grid No. 1 Voltage ............................ -100 V
Peak Grid No. 1 Voltage........................ 410 V
Plate Current (Zero Signal) ................... 20 mA
Plate Current (Maximum Signal) ................ 320 mA
Driving Power ................................. 8.0 W
Load Resistance ............................... 9K Ω
Power Output (approx) ......................... 260 W

If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.

(c) 1994-2021 by William A. Beech, NJ7P

Fri, 24 Jun 2022 18:00:37 -0700