NJ7P SQL Tube Database Query

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6F8G
Medium-Mu Twin Triode

EIA Base & Outline

Substitute Data

Preferred Substitutes ......................... 6C8
Source ........................................ RCA RC-15 - 1947

Application

Source ........................................ RCA RC-15 - 1947
Glass octal type used as voltage amplifier or phase inverter in radio equipment. Except for common heater each triode is independent of the other.

Source ........................................ RCA RC-15 - 1947
Tube requires octal socket. Except for the heater rating and interelectrode capacitances, each triode unit is identical with type 6J5.

Mechanical Data

Source ........................................ RCA RC-15 - 1947
Bulb .......................................... ST-12
EIA Outline ................................... 12-8
EIA Base ...................................... 8G

Electrical Data

Source ........................................ RCA RC-15 - 1947
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A
Maximum Heater-Cathode Voltage
Heater Positive with Respect to Cathode
DC Component ............................ 90 V
Heater Negative with Respect to Cathode
DC Component ............................ 90 V

Source ........................................ RCA RC-15 - 1947
For other characteristics and typical operation, see 6J5

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

Mon, 04 Jul 2022 16:28:28 -0700