NJ7P SQL Tube Database Query

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6DT6A
Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 7ENEIA Bulb: 5-2
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
Miniature type used as FM detector in color and black-and-white television receivers. Requires miniature 7-contact socket.

Mechanical Data

Source ........................................ RCA RC-29 - 1975
Bulb .......................................... T-5 1/2
EIA Outline ................................... 5-2
EIA Base ...................................... 7EN

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.3 A

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 5.8 pf
Output ........................................ 1.7 pf
Grid to Plate ................................. 0.02 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 330 V
Grid No. 3 Voltage ............................ 28 V
Grid No. 2 Voltage ............................ 330 V
Negative Grid No. 1 Voltage ................... 0 V
Plate Dissipation ............................. 1.7 W
Grid No. 2 Dissipation ........................ 1.1 W
Grid Current .................................. 0.25 mA
Cathode Current ............................... 0.5 mA

FM Detector
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 330 V
Positive Grid No. 3 Voltage ................... 28 V
Grid No. 2 Supply Voltage ..................... 330 V
Positive Grid No. 1 Voltage ................... 0 V
Plate Dissipation ............................. 1.7 W
Grid No. 2 Dissipation ........................ 1.1 W
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 250000 Ω
Self Bias .................................. 500000 Ω

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ GE 1-61
Plate Voltage ................................. 150 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage Derived From
Cathode Bias Resistor ...................... 560 Ω
Plate Resistance (approx) ..................... 150000 Ω
Grid No. 1 Transconductance ................... 1350 µMho
Grid No. 3 Transconductance ................... 515 µMho
Plate Current ................................. 1.55 mA
Grid No. 2 Current ............................ 1.8 mA
Grid No. 1 Voltage for Ib ..................... 10 µa @ -5.2 V
Grid No. 3 Voltage for Ib ..................... 10 µa @ -4.2 V

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Thu, 30 Jun 2022 06:41:33 -0700