NJ7P SQL Tube Database Query

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6848
Tetrode

EIA Base & Outline

Mechanical Data

EIA Base ...................................... 6848

Electrical Data

Heater Voltage ................................ 7.0 V
Heater Current ................................ 13.5 A

Direct Interelectrode Capacitances (approx)

GG
Input ......................................... 27.8 pf
Output ........................................ 6.4 pf
Grid to Plate ................................. 0.01 pf

Maximum Ratings (Design Center Values)

GG
Plate Voltage ................................. 750 V
Plate Dissipation ............................. 7000 W

Characteristics and Typical Operation

Class C Amplifier
Plate Voltage ................................. 4000 V
Grid No. 2 Voltage ............................ 400 V
Grid No. 1 Voltage ............................ -100 V
Plate Current ................................. 570 mA
Grid No. 2 Current ............................ 20 mA
Power Output (approx) ......................... 1250 W

Class C Oscillator/Amplifier
Plate Voltage ................................. 6500 V
Grid No. 2 Voltage ............................ 700 V
Grid No. 1 Voltage ............................ -100 V
Plate Current ................................. 800 mA
Grid No. 2 Current ............................ 25 mA
Power Output (approx) ......................... 3200 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

Wed, 29 Mar 2023 03:32:07 -0700