NJ7P SQL Tube Database Query

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6FM8
Twin Diode-Triode

EIA Base & Outline

EIA Base: 9KREIA Bulb: 6-2
Source ........................................ GE - 1973

Mechanical Data

Source ........................................ GE - 1973
Bulb .......................................... T-6 1/2
EIA Outline ................................... 6-2
EIA Base ...................................... 9KR

Electrical Data

Source ........................................ GE - 1973
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.45 A

Direct Interelectrode Capacitances (approx)

Diode 1
Source ........................................ GE - 1973
Output ........................................ 2.4 pf

Diode 2
Source ........................................ GE - 1973
Output ........................................ 2.2 pf

Triode
Source ........................................ GE - 1973
Input ......................................... 1.5 pf
Output ........................................ 0.16 pf
Grid to Plate ................................. 1.8 pf

Maximum Ratings (Design Center Values)

Triode
Source ........................................ GE - 1973
Plate Voltage ................................. 330 V
Plate Dissipation ............................. 1.0 W

Characteristics and Typical Operation

Max Rating (Diode 1)
Source ........................................ GE - 1973
Plate Voltage ................................. 200 V
Plate Current ................................. 5 mA

Max Rating (Diode 2)
Source ........................................ GE - 1973
Plate Voltage ................................. 200 V
Plate Current ................................. 5 mA

Triode Class A Amplifier
Source ........................................ GE - 1973
Plate Voltage ................................. 300 V
Grid No. 1 Voltage ............................ -3 V
Amplification Factor .......................... 70
Plate Resistance (approx) ..................... 58K Ω
Transconductance .............................. 1200 µMho
Plate Current ................................. 1 mA

Triode Class A Amplifier
Source ........................................ GE - 1973
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -3 V
Amplification Factor .......................... 70
Plate Resistance (approx) ..................... 58K Ω
Transconductance .............................. 1200 µMho
Plate Current ................................. 1 mA

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Mon, 15 Aug 2022 18:40:19 -0700