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.

6LM8
Medium-Mu Triode - Semi-Remote-Cutoff Pentode

EIA Base & Outline

EIA Base: 9AEEIA Bulb: 6-2

Substitute Data

Preferred Substitutes ......................... 6GH8
Substitutes ................................... 6AX8 6EA8 6GJ8 6HL8 6KD8 6U8

Application

Miniature type used in color and bw tv receivers. The pentode is used in burst-amplifier circuits, and the triode as a general-purpose amplifier tube. Requires miniature 9-contact socket.

Mechanical Data

Bulb .......................................... T-6 1/2
EIA Outline ................................... 6-2
EIA Base ...................................... 9AE

Electrical Data

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

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 5.5 pf
Output ........................................ 3.8 pf
Grid to Plate ................................. 0.015 pf

Triode
Input ......................................... 3/2 pf
Output ........................................ 1.9 pf
Grid to Plate ................................. 1.8 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 350 V
Grid No. 2 Voltage ............................ 330 V
Plate Dissipation ............................. 2.5 W
Grid No. 2 Dissipation ........................ 0.55 W

Triode
Plate Voltage ................................. 330 V
Plate Dissipation ............................. 2.5 W

Characteristics and Typical Operation

Triode Class A Amplifier
Plate Voltage ................................. 125 V
Grid No. 1 Voltage ............................ -1 V
Amplification Factor .......................... 46
Plate Resistance (approx) ..................... 5400 Ω
Transconductance .............................. 8500 µMho
Plate Current ................................. 13.5 mA

Pentode Class A Amplifier
Plate Voltage ................................. 125 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage ............................ -2 V
Plate Resistance (approx) ..................... 150K Ω
Transconductance .............................. 6000 µMho
Plate Current ................................. 12 mA
Grid No. 2 Current ............................ 4 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, 29 Nov 2022 18:24:56 -0700