NJ7P SQL Tube Database Query

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6MQ8
Medium-Mu Triode - Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 9AEEIA Bulb: 6-2

Substitute Data

Substitutes ................................... 6HL8
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
Miniature type used in color and bw tv receivers. The pentode is used in band-pass-amplifier applications.

Source ........................................ RCA RC-29 - 1975
The triode is used in video-amplifier, sync-separator, color-killer-control, matrix-amplifier or blanker applications. Requires minaiture 9-contact socket.

Mechanical Data

Source ........................................ RCA RC-29 - 1975
Bulb .......................................... T-6 1/2
EIA Outline ................................... 6-2
EIA Base ...................................... 9AE

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.535 A

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 7.5 pf
Output ........................................ 2.2 pf
Grid to Plate ................................. 0.045 pf

Triode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 3 pf
Output ........................................ 1.4 pf
Grid to Plate ................................. 1.7 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 330 V
Grid No. 2 Voltage ............................ 330 V
Plate Dissipation ............................. 2.5 W
Grid No. 2 Dissipation ........................ 0.55 W

Triode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 330 V
Plate Dissipation ............................. 2.7 W

Characteristics and Typical Operation

Triode Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 150 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 56 Ω
Amplification Factor .......................... 40
Plate Resistance (approx) ..................... 5K Ω
Transconductance .............................. 8500 µMho
Plate Current ................................. 18 mA

Pentode Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 125 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 62 Ω
Plate Resistance (approx) ..................... 150K Ω
Transconductance .............................. 10000 µMho
Plate Current ................................. 12 mA
Grid No. 2 Current ............................ 4.5 mA

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Wed, 08 Dec 2021 11:45:40 -0700