NJ7P SQL Tube Database Query

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6BL7GT
Medium-Mu Twin Triode

EIA Base & Outline

Substitute Data

Preferred Substitutes ......................... 6BL7GTA 6BX7GT
Source ........................................ RCA DS 10/53

Application

Source ........................................ RCA DS 10/53
Glass octal type used as combined vertical-deflection amplifier and vertical-deflection oscillator in color and black-and-white television receivers.

Source ........................................ RCA DS 10/53
When so operated, it is recommended that unit no 1 (pins 4, 5 and 6) be used as the oscillator. Requires octal socket.

Mechanical Data

Source ........................................ RCA DS 10/53
Bulb .......................................... T-9
Base Type ..................................... B8-58 Short Intermediate Octal 8-Pin
EIA Outline ................................... 9-41
EIA Base ...................................... 8BD
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA DS 10/53
Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.5 A

Direct Interelectrode Capacitances (approx)

Triode 1
Source ........................................ RCA DS 10/53
Shielded Unshielded
Input ......................................... 4.4 5.0 pf
Output ........................................ 1.1 3.4 pf
Grid to Plate ................................. 4.2 4.2 pf

Triode 2
Source ........................................ RCA DS 10/53
Shielded Unshielded
Input ......................................... 4.8 5.0 pf
Output ........................................ 1.2 3.2 pf
Grid to Plate ................................. 4.0 4.0 pf

Maximum Ratings (Design Center Values)

Each Unit
Source ........................................ RCA DS 10/53
Plate Voltage ................................. 500 V
Negative Grid No. 1 Voltage ................... 500 V
Plate Dissipation ............................. 10 W
Cathode Current ............................... 210 mA
Grid No. 1 Circuit Resistance
Self Bias .................................. 4.7M Ω

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA DS 10/53
Plate Voltage ................................. 250 V
Grid No. 1 Voltage ............................ -9 V
Amplification Factor .......................... 15
Plate Resistance (approx) ..................... 2150 Ω
Transconductance .............................. 6200 µ
Plate Current ................................. 40 mA
Grid No. 1 Voltage for Ib ..................... 25 µa @ -25 V

Vertical Amplifier
Source ........................................ RCA DS 10/53
DC Plate Supply Voltage ....................... 500 V
Peak Positive-Pulse Plate Voltage ............. 1800 V
Peak Negative-Pulse Grid No. 1 Voltage ........ 500 V
Average Cathode Current ....................... 60 mA
Plate Dissipation ............................. 10 W

If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.

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

Thu, 02 Feb 2023 23:30:36 -0700