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.

6U8
Medium-Mu Triode - Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 9AEEIA Bulb: 6-2
Source ........................................ TungSol

Application

Source ........................................ TungSol
Miniature type used as combined oscillator and mixer tube in color and black-and-white television receivers utilizing an intermediate frequency in the order of 40 MHz. Requires miniature 9-contact socket.

Mechanical Data

Source ........................................ TungSol
Bulb .......................................... T-6 1/2
Base Type ..................................... Small Button 9-Pin
EIA Outline ................................... 6-2
EIA Base ...................................... 9AE
Mounting Position ............................. Any

Electrical Data

Source ........................................ TungSol
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.45 A

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ TungSol
Input ......................................... 5 pf
Output ........................................ 2.6 pf
Grid to Plate ................................. 0.01 pf

Triode
Source ........................................ TungSol
Input ......................................... 2.5 pf
Output ........................................ 0.4 pf
Grid to Plate ................................. 1.8 pf

Maximum Ratings (Design Center Values)

Triode
Source ........................................ TungSol
Plate Voltage ................................. 300 V
Plate Dissipation ............................. 2.8 W

Pentode
Source ........................................ TungSol
Plate Voltage ................................. 300 V
Grid No. 2 Voltage ............................ 300 V
Plate Dissipation ............................. 2.7 W
Grid No. 2 Dissipation ........................ 0.5 W

Characteristics and Typical Operation

Triode Class A Amplifier
Source ........................................ TungSol
Plate Voltage ................................. 150 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 56 Ω
Amplification Factor .......................... 40
Plate Resistance (approx) ..................... 5K Ω
Transconductance .............................. 8500 µMho
Plate Current ................................. 18 mA

Pentode Class A Amplifier
Source ........................................ TungSol
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 110 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 68 Ω
Plate Resistance (approx) ..................... 400K Ω
Transconductance .............................. 5200 µMho
Plate Current ................................. 10 mA
Grid No. 2 Current ............................ 3.5 mA

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

Tue, 28 Mar 2023 22:54:14 -0700