NJ7P SQL Tube Database Query

A horizontal ribbon.

Note: Please do not link down into my pages. I change this directory structure often and your links will not work correctly.

A horizontal ribbon.

3-50D4
Power Triode

EIA Base & Outline

EIA Base: 2D

Mechanical Data

EIA Base ...................................... 2D

Electrical Data

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

Direct Interelectrode Capacitances (approx)

Triode
Input ......................................... 2.5 pf
Output ........................................ 0.4 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

A horizontal ribbon.

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.

Please enter the tube number:

This database contains data on thousands of tubes. Every effort has been made to insure the accuracy of this reference, however, I assume no liability for the results of using information contained herein.

Other Tube Search Engines:
Frank's Electron Tube Pages

Complete Tube Manuals:
Tube Manual Index from NJ7P

A horizontal ribbon.

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

Mon, 27 Jun 2022 08:36:08 -0700