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Tube Substitutions for:
6SN7GT
Medium Mu Duo Triode
TypeSubstitutesBase Diagram
6SN7GT6BL7, 6BX7, 6DN7, 6, 6SN7A, 6SN7GTA, 6SN7GTB, 6SN7GTY, 6SN7L
Web References6SN7GT (Tung-Sol) @ Franks Electron Tubes
6SN7GT (Sylvania) @ Franks Electron Tubes
6SN7GT (Brimar) @ Franks Electron Tubes
6SN7GT @ RadioMuseum.org
Sylvania Type 6SN7GT
DUO TRIODE



MECHANICAL DATA

Bulb T-9
Base Intermediate Shell Octal 8-Pin
Basing 8BD
Mounting Position Any


ELECTRICAL DATA


HEATER CHARACTERISTICS
Heater Voltage 6.3 Volts
Heater Current 600 Ma

DIRECT INTERELECTRODE CAPACITANCES
  Section 12 Section 2
Grid to Plate 240 3.8 ��f
Input 2.2 2.6 ��f
Output 0.7 0.7 ��f

MAXIMUM RATINGS (Design Center Values-Each Section)
Plate Voltage, C D 300 Volts
Vertical Amp Peak Postive Voltage 1200 Volts
Plate Dissipation (each plate) 3.5 Watts
Plate Dissipation (both Plates) 5.0 Watts

CHARACTERISTIC AND TYPICAL OPERATION
Class A1
Plate Voltage 90 250 Volts
Grid Voltage 0 -8.0 Volts
Plate Current 10 9.0 Ma
Plate Resistance 6700 7700 Ohms
Transconductance 3000 2600 �mhos
Amplification Factor 20 20 X
Grid Voltage for Ib=1.3Ma   -12.5 Volts
Grid Voltage for Ib=10�a -7.0 -18 Volts

NOTES:

1 All ratings, operating conditions and characteristics are for each section except where otherwise noted.
2 Section No. 1 connects to pins 4, 5 and 6, Section No. 2 connects to pins 1, 2 and 3.
3 For operation in a 525-line, 30 frame system, the duty cycle of the voltage pulse must not exceed 15% of one scanning cycle.

APPLICATION

The Sylvania Type 6SN7GT is a duo-triode. It may be uses as combined vertical oscillator and vertical deflection amplifier in television receivers or in audio amplifier service.



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