NJ7P SQL Tube Database Query

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

6LF8
Triode - Pentode

EIA Base & Outline

Substitute Data

Preferred Substitutes ......................... 6JV8 6KS8
Substitutes ................................... 6AW8

Application

Miniature type used in video-amplifier stages of color and bw tv receivers. Requires miniature 9-contact socket.

Mechanical Data

Bulb .......................................... T-6 1/2
EIA Outline ................................... 6-3
EIA Base ...................................... 9DX

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.6 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 10 pf
Output ........................................ 3.6 pf
Grid to Plate ................................. 0.06 pf

Triode
Input ......................................... 3.2 pf
Output ........................................ 1.8 pf
Grid to Plate ................................. 2.2 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 330 V
Grid No. 2 Voltage ............................ 330 V
Plate Dissipation ............................. 3.75 W
Grid No. 2 Dissipation ........................ 1.1 W

Triode
Plate Voltage ................................. 330 V
Plate Dissipation ............................. 1.1 W

Characteristics and Typical Operation

Triode Class A Amplifier
Plate Voltage ................................. 200 V
Grid No. 1 Voltage ............................ -2 V
Plate Resistance (approx) ..................... 17.5K Ω
Transconductance .............................. 4000 µ
Plate Current ................................. 4.0 mA

Pentode Class A Amplifier
Plate Voltage ................................. 100 V
Grid No. 2 Voltage ............................ 150 V
Grid No. 1 Voltage ............................ -2.5 V
Plate Resistance (approx) ..................... 200K Ω
Transconductance .............................. 11000 µ
Plate Current ................................. 20 mA
Grid No. 2 Current ............................ 5 mA

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 03:58:40 -0700