NJ7P SQL Tube Database Query

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A horizontal ribbon.

6X8A
Medium-Mu Triode - Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 9AKEIA Bulb: 6-2
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
Miniature type used as combined oscillator and mixer tube in television receivers utilizing an IF in the rder of 40 MHz. Requires miniature 9-contact socket.

Mechanical Data

Source ........................................ RCA RC-29 - 1975
Bulb .......................................... T-6 1/2
Base Type ..................................... Small Button 9-Pin
EIA Outline ................................... 6-2
EIA Base ...................................... 9AK
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.45 A

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 4.6 pf
Output ........................................ 0.9 pf
Grid to Plate ................................. 0.09 pf

Triode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 2 pf
Output ........................................ 0.5 pf
Grid to Plate ................................. 1.5 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 275 V
Grid No. 2 Voltage ............................ 275 V
Plate Dissipation ............................. 2.3 W
Grid No. 2 Dissipation ........................ 0.45 W

Triode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 275 V
Plate Dissipation ............................. 1.7 W

Characteristics and Typical Operation

Triode Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 125 V
Grid No. 1 Voltage ............................ -1 V
Amplification Factor .......................... 40
Plate Resistance (approx) ..................... 6K Ω
Transconductance .............................. 6500 µMho
Plate Current ................................. 12 mA

Pentode Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 125 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage ............................ -1 V
Plate Resistance (approx) ..................... 300K Ω
Transconductance .............................. 5500 µMho
Plate Current ................................. 9 mA
Grid No. 2 Current ............................ 2.2 mA

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Fri, 09 Dec 2022 05:40:19 -0700