6BQ6GTA

Improved glass beam-power horizontal-output tube for television receivers, rated for approximately 11 W plate dissipation and positive plate pulses above 6 kV.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 6AM
Socket code: B9A
Base pins: 8
Nominal heater: 6.3 V / 1.2 A

Description

Beam-power horizontal-deflection output tube for television receivers.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 6AM
Socket code: B9A
Base pins: 8
Nominal heater voltage: 6.3 V
Nominal heater current: 1.2 A
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

6AM - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1Pin 1	—	NC May be omitted on some physical base variants	Verified 6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view
PIN2Pin 2	—	H — Heater	Verified 6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view
PIN3Pin 3	—	NC	Verified 6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view
PIN4Pin 4	A	G2 — Screen Grid	Verified 6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view
PIN5Pin 5	A	G1 — Control Grid	Verified 6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view
PIN7Pin 7	—	H — Heater	Verified 6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view
PIN8Pin 8	A	BP — Beam-Forming PlateGroup AM8	Verified 6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view
PIN8Pin 8	A	K — CathodeGroup AM8	Verified 6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view
CAP1Top cap	A	P — Plate (Anode)	Verified 6AM manufacturer basing; 12DQ6A Tung-Sol, 6BQ6GT Sylvania/Tung-Sol; bottom view

Section ratings

1 physical section, each with unique specifications.

Section 1

Beam Power

X-ray radiationInterelectrode capacitances

Plate resistance: 20000 Ω
Transconductance: 0.0055 S
Max plate voltage: 700 V
Max screen voltage: 175 V
Max plate dissipation: 11 W
Max screen dissipation: 2.5 W
Max cathode current: 110 mA

Promoted from the printed maximum-rating/characteristic columns; additional operating-point data retained as section parameters.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Plate voltage
250 V
HorizontalDeflection
Screen voltage
150 V
HorizontalDeflection
Control-grid voltage
-22.5 V
HorizontalDeflection
Plate current
55 mA
HorizontalDeflection
Screen current
2.1 mA
HorizontalDeflection
Positive pulse plate voltage maximum
6100 V
HorizontalDeflection
Plate dissipation maximum
11 W
HorizontalDeflection
Screen dissipation maximum
2.5 W
HorizontalDeflection
DC cathode current maximum
110 mA
HorizontalDeflection

Characteristic

Plate resistance
20000 Ω
HorizontalDeflection
Transconductance
5500 µS
HorizontalDeflection

Data set 02

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristics

Heater voltage
6.3 V
Heater current
1.2 A

Other

Maximum plate voltage
700 V
Maximum screen voltage
175 V
Maximum plate dissipation
11 W
Maximum screen dissipation
2.5 W
Maximum positive control-grid voltage
0 V

Application

Service
Horizontal deflection amplifier