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6AQ8
High-Mu Twin Triode

Base & Bulb ( RCA RC-29 - 1975)

Substitute Data

Preferred Substitutes ......................... 6BK7 6DT8 6EV7
Substitutes ................................... 6BC8 6BQ7 6BZ7

Application

Miniature type used as rf amplifier and self-oscillationg mixer in FM/AM radio receivers. Requires miniature 9-contact socket.

Mechanical Data

Bulb .......................................... T-6 1/2
Base .......................................... Small Button 9-Pin
Outline ....................................... 6-2
EIA Base ...................................... 9DE
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.435 A

Direct Interelectrode Capacitances (approx)

Triode 1
Input ......................................... 0.3 pf
Output ........................................ 1.2 pf
Grid to Plate ................................. 1.5 pf

Direct Interelectrode Capacitances (approx)

Triode 2
Input ......................................... 0.3 pf
Output ........................................ 1.2 pf
Grid to Plate ................................. 1.5 pf

Maximum Ratings (Design Center Values)

Triode 1
Plate Voltage ................................. 300 V
Plate Dissipation ............................. 2.5 W

Maximum Ratings (Design Center Values)

Triode 2
Plate Voltage ................................. 300 V
Plate Dissipation ............................. 4.5 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -2 V
Amplification Factor .......................... 57
Plate Resistance (approx) ..................... 9.7K Ω
Transconductance .............................. 6000 µ
Plate Current ................................. 10 mA
Load Resistance ............................... 1.8K Ω

Characteristics and Typical Operation

Converter
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -3 V
Amplification Factor .......................... 57
Plate Resistance (approx) ..................... 22K Ω
Plate Current ................................. 5.2 mA
Load Resistance ............................... 12K Ω

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