NJ7P SQL Tube Database Query

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A horizontal ribbon.

6DR7
Twin Triode

EIA Base & Outline

EIA Base: 9HFEIA Bulb: 6-3

Substitute Data

Preferred Substitutes ......................... 6FD7
Substitutes ................................... 6CY7 6FR7
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
Miniature type containing high-mu and low-mu triodes; used as combined vertical-deflection oscillator and vertical-deflection amplifier tube in television receivers. Requires miniature 9-contact socket.

Mechanical Data

Source ........................................ RCA RC-29 - 1975
Bulb .......................................... T-6 1/2
Base Type ..................................... Miniature Button 9-Pin
EIA Outline ................................... 6-3
EIA Base ...................................... 9HF
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.9 A

Direct Interelectrode Capacitances (approx)

Triode 1
Source ........................................ RCA RC-29 - 1975
Input ......................................... 2.2 pf
Output ........................................ 0.34 pf
Grid to Plate ................................. 4.5 pf

Triode 2
Source ........................................ RCA RC-29 - 1975
Input ......................................... 5.5 pf
Output ........................................ 1.0 pf
Grid to Plate ................................. 8.5 pf

Maximum Ratings (Design Center Values)

Triode 1
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 330 V
Plate Dissipation ............................. 1 W

Triode 2
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 275 V
Plate Dissipation ............................. 7 W

Characteristics and Typical Operation

Triode 1 Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -3 V
Amplification Factor .......................... 68
Plate Resistance (approx) ..................... 40K Ω
Transconductance .............................. 1600 µMho
Plate Current ................................. 1.4 mA

Triode 2 Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 150 V
Grid No. 1 Voltage ............................ -17.5 V
Amplification Factor .......................... 6
Plate Resistance (approx) ..................... 925 Ω
Transconductance .............................. 6500 µMho
Plate Current ................................. 35 mA

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Tue, 28 Mar 2023 22:52:25 -0700