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6FQ7
Medium-Mu Twin Triode

Base & Bulb ( RCA RC-29 - 1975)

Substitute Data

Preferred Substitutes ......................... 6CG7
Substitutes ................................... 6EV7 6GU7

Application

Miniature type used as combined vertical and horizontal-deflection oscillator in color and black-and-white television receivers. Requires miniature 9-contact socket.

Mechanical Data

Bulb .......................................... T-6 1/2
Outline ....................................... 6-3
EIA Base ...................................... 9LP

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.6 A

Direct Interelectrode Capacitances (approx)

Triode 1
Input ......................................... 2.4 pf
Output ........................................ 0.34 pf
Grid to Plate ................................. 3.6 pf

Direct Interelectrode Capacitances (approx)

Triode 2
Input ......................................... 2.4 pf
Output ........................................ 0.26 pf
Grid to Plate ................................. 3.8 pf

Maximum Ratings (Design Center Values)

Triode 1
Plate Voltage ................................. 330 V
Plate Dissipation ............................. 4 W

Maximum Ratings (Design Center Values)

Triode 2
Plate Voltage ................................. 330 V
Plate Dissipation ............................. 5.7 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -8 V
Amplification Factor .......................... 20
Plate Resistance (approx) ..................... 7700 Ω
Transconductance .............................. 2600 µ
Plate Current ................................. 9 mA

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 90 V
Grid No. 1 Voltage ............................ 0 V
Amplification Factor .......................... 20
Plate Resistance (approx) ..................... 6700 Ω
Transconductance .............................. 3000 µ
Plate Current ................................. 10 mA

Characteristic Curves

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