NJ7P SQL Tube Database Query

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6S8GT
Triple Diode - High-Mu Triode

EIA Base & Outline

Application

Source ........................................ RCA RC-15 - 1947
Glass octal type used as audio amplifier, AM detector, and FM detector in AM/FM receivers. Diode no.2 used for AM detection and diode unit No.1 and No.3 are used for FM detection. Requires octal socket and may be mounted in any position.

Mechanical Data

Source ........................................ RCA RC-15 - 1947
Bulb .......................................... T-9
Base Type ..................................... Intermediate Octal 8-Pin
EIA Outline ................................... 9-23 9-48
Maximum Overall Height ........................ 3-5/8 In.
Maximum Seated Height ......................... 3-1/16 In.
EIA Base ...................................... 8CB
Top Cap ....................................... Miniature
Mounting Position ............................. Any

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

Direct Interelectrode Capacitances (approx)

Triode
Source ........................................ RCA RC-15 - 1947
Input ......................................... 1.2 pf
Output ........................................ 5 pf
Grid to Plate ................................. 2 pf

Each Diode
Source ........................................ RCA RC-15 - 1947
Output ........................................ 1.0 pf

Maximum Ratings (Design Center Values)

Triode
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 300 V
Plate Dissipation ............................. 0.5 W

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -2 V
Amplification Factor .......................... 100
Plate Resistance (approx) ..................... 91K Ω
Transconductance .............................. 1100 µ
Plate Current ................................. 0.9 mA

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 100 V
Grid No. 1 Voltage ............................ -1 V
Amplification Factor .......................... 100
Plate Resistance (approx) ..................... 110K Ω
Transconductance .............................. 900 µ
Plate Current ................................. 0.4 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

Fri, 19 Aug 2022 21:38:03 -0700