NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

6C8G
Medium-Mu Twin Triode

EIA Base & Outline

EIA Base: 8GEIA Bulb: 12-8

Substitute Data

Substitutes ................................... 6F8
Source ........................................ RCA RC-15 - 1947

Application

Source ........................................ RCA RC-15 - 1947
Glass octal type used as a voltage amplifier and phase inverter in radio equipment. When this type is used in a high-gain amplifier, hum may be reduced or eliminated by

Source ........................................ RCA RC-15 - 1947
grounding pin 7 or by grounding the arm of a 100-to-500-ohm potentiometer across the heater terminals. Tune requires octal socket.

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 Ratings (Design Center Values)

Each Triode
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 250 V
Positive Grid No. 1 Voltage ................... 0 V
Plate Dissipation ............................. 1.0 W

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -4.5 V
Amplification Factor .......................... 36
Plate Resistance (approx) ..................... 22.5K Ω
Transconductance .............................. 1600 µMho
Plate Current ................................. 3.2 mA

A horizontal ribbon.

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A horizontal ribbon.

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Thu, 02 Feb 2023 23:20:15 -0700