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6MN8
High-Mu Triple Triode

Base & Bulb ( GE DS 12/70)

Substitute Data

Substitutes ................................... 6HL8

Application

Duodecar type used in matrixing-amplifier circuits of color and bw tv receivers. Requires duodecar 12-contact socket.

Mechanical Data

Bulb .......................................... T-9
Base .......................................... E12-70 Button 12-Pin
Outline ....................................... 9-60
EIA Base ...................................... 12HU
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.9 A

Direct Interelectrode Capacitances (approx)

Triode 1
Input ......................................... 4.6 pf
Output ........................................ 0.33 pf
Grid to Plate ................................. 2.6 pf

Direct Interelectrode Capacitances (approx)

Triode 2
Input ......................................... 4.6 pf
Output ........................................ 0.57 pf
Grid to Plate ................................. 2.6 pf

Direct Interelectrode Capacitances (approx)

Triode 3
Input ......................................... 4.6 pf
Output ........................................ 0.65 pf
Grid to Plate ................................. 2.6 pf

Maximum Ratings (Design Center Values)

Each Triode
Plate Voltage ................................. 330 V
Positive Grid No. 1 Voltage ................... 0 V
Plate Dissipation ............................. 3.0 W
Grid No. 1 Circuit Resistance
Fixed Bias .................................. 1M Ω

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 200 V
Grid No. 1 Voltage ............................ -4 V
Amplification Factor .......................... 40
Plate Resistance (approx) ..................... 10K Ω
Transconductance .............................. 4000 µ
Plate Current ................................. 4.8 mA
Grid No. 1 Voltage for Ib ..................... 50 µa @ -11 V

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 125 V
Grid No. 1 Voltage ............................ -1 V
Amplification Factor .......................... 47
Plate Resistance (approx) ..................... 6.25K Ω
Transconductance .............................. 7500 µ
Plate Current ................................. 11 mA
Grid No. 1 Voltage for Ib ..................... 50 µa @ -5 V

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