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6DX4
Medium-Mu Triode

Base & Bulb ( GE - 1973)

Substitute Data

Preferred Substitutes ......................... 6DY4
Substitutes ................................... 6AF4 6T4 6AN4 6DZ4

Mechanical Data

Bulb .......................................... T-5 1/2
Outline ....................................... 5-1
EIA Base ...................................... 7DK

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.2 A

Direct Interelectrode Capacitances (approx)

Triode
Input ......................................... 3.9 pf
Output ........................................ 1.5 pf
Grid to Plate ................................. 1.6 pf

Maximum Ratings (Design Center Values)

Triode
Plate Voltage ................................. 150 V
Plate Dissipation ............................. 2.2 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 85 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ....................... 150 Ω
Amplification Factor .......................... 30
Plate Resistance (approx) ..................... 2700 Ω
Transconductance .............................. 11000 µ
Plate Current ................................. 10 mA

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