NJ7P SQL Tube Database Query

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A horizontal ribbon.

6X8
Medium-Mu Triode - Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 9AKEIA Bulb: 6-2
Source ........................................ RCA DS 8/60

Application

Source ........................................ RCA DS 8/60
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 DS 8/60
Bulb .......................................... T-6 1/2
Base Type ..................................... Small Button 9-Pin
EIA Outline ................................... 6-2
EIA Base ...................................... 9AK
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA DS 8/60
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.45 A

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ RCA DS 8/60
Input ......................................... 4.3 pf
Output ........................................ 0.7 pf
Grid to Plate ................................. 0.09 pf

Triode
Source ........................................ RCA DS 8/60
Input ......................................... 2.0 pf
Output ........................................ 0.5 pf
Grid to Plate ................................. 1.4 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ RCA DS 8/60
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 250 V
Plate Dissipation ............................. 2.0 W
Grid No. 2 Dissipation ........................ 0.4 W

Triode
Source ........................................ RCA DS 8/60
Plate Voltage ................................. 250 V
Plate Dissipation ............................. 1.5 W

Characteristics and Typical Operation

Triode Class A Amplifier
Source ........................................ RCA DS 8/60
Plate Voltage ................................. 100 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 100 Ω
Amplification Factor .......................... 40
Plate Resistance (approx) ..................... 6.9K Ω
Plate Current ................................. 8.5 mA

Pentode Class A Amplifier
Source ........................................ RCA DS 8/60
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 150 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 200 Ω
Plate Resistance (approx) ..................... 750K Ω
Plate Current ................................. 7.7 mA
Grid No. 2 Current ............................ 1.6 mA

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A horizontal ribbon.

(c) 1994-2021 by William A. Beech, NJ7P

Thu, 18 Aug 2022 16:22:37 -0700