NJ7P SQL Tube Database Query

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6LR8
High-Mu Triode - Sharp-Cutoff Pentode

EIA Base & Outline

Substitute Data

Substitutes ................................... 6KY8
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
Novar type used in combined vertical-deflection oscillator and amplifier in bw tv receivers. Requires novar 9-contact socket.

Mechanical Data

Source ........................................ RCA RC-29 - 1975
Bulb .......................................... T-12
EIA Outline ................................... 12-65
EIA Base ...................................... 9QT

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.5 A

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 400 V
Grid No. 2 Voltage ............................ 300 V
Plate Dissipation ............................. 14 W
Grid No. 2 Dissipation ........................ 2.75 W

Triode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 400 V
Plate Dissipation ............................. 2.5 W

Characteristics and Typical Operation

Triode Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -4 V
Amplification Factor .......................... 58
Plate Resistance (approx) ..................... 14K Ω
Transconductance .............................. 4100 µ
Plate Current ................................. 2.6 mA

Pentode Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 135 V
Grid No. 2 Voltage ............................ 120 V
Grid No. 1 Voltage ............................ -10 V
Plate Resistance (approx) ..................... 14K Ω
Transconductance .............................. 9200 µ
Plate Current ................................. 51 mA
Grid No. 2 Current ............................ 3 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 00:03:35 -0700