6BG6GA

Improved replacement for the 6BG6G beam-power horizontal-output tube, retaining approximately 20 W plate dissipation and high pulse-current capability.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 5BT
Socket code: IO
Base pins: 8
Nominal heater: 6.3 V / 900 mA

Description

Beam-power pentode replacement for 6BG6G, primarily for television horizontal-deflection service.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 5BT
Socket code: IO
Base pins: 8
Nominal heater voltage: 6.3 V
Nominal heater current: 900 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

5BT - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1IS	A	IS — Internal Screen Source designation IS; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
PIN2H	—	H — Heater Source designation H; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
PIN3G3	A	G3 — Suppressor GridGroup 5BT3 Source designation G3; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
PIN3K	A	K — CathodeGroup 5BT3 Source designation K; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
PIN5G1	A	G1 — Control Grid Source designation G1; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
PIN7H	—	H — Heater Source designation H; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
PIN8G2	A	G2 — Screen Grid Source designation G2; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT
CAP1P	A	P — Plate (Anode) Source designation P; independent manufacturer confirmation pending	Unverified EIA Base Connections, printed page 127, 5BT

Section ratings

1 physical section, each with unique specifications.

Section 1

Beam Power

X-ray radiationInterelectrode capacitances

Plate resistance: 25000 Ω
Transconductance: 0.006 S
Max plate voltage: 700 V
Max screen voltage: 350 V
Max plate dissipation: 20 W
Max screen dissipation: 3.2 W
Max cathode current: 110 mA
Rectifier max heater-cathode voltage: 200 V

DC plate-supply and pulse plate-voltage ratings are preserved as parameters; there is no separately stated generic maximum DC plate voltage.

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

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Peak Positive Pulse Plate Voltage
6600 V
HorizontalDeflection

Characteristic

TriodeAmplificationFactor
8
TriodeConnection

Data set 02

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Capacitance

GRID #
0.8 pF
Capacitances | GRID #1 TO PLATE 0.8 pf

Other

MAXIMUM GRID #
3.2 W
Maximum Ratings | MAXIMUM GRID #2 DISSIPATION 3.2 WATTS
MAXIMUM DC CATHODE CURRENT
110 mA
Maximum Ratings | MAXIMUM DC CATHODE CURRENT 110 MA.
MAXIMUM GRID #
0.47 Mohm
Maximum Ratings | MAXIMUM GRID #1 CIRCDIT RESISTANCE 0.47 MEGOHM
PLATE VOLTAGE
250 V
Typical Operating Conditions | PLATE VOLTAGE 0'0 250 voLTs
GRID #
250 V
Typical Operating Conditions | GRID #2 VOLTAGE 25O 250 VOLTS
PLATE CURRENT
75 mA
Typical Operating Conditions | PLATE CURRENT 180 75 Ma.
GRID #i VOLTAGE O —
15 V
Typical Operating Conditions | GRID #i VOLTAGE O — 15 VOLTS
TRANSCONDUCTANCE
0 µMHOS
Typical Operating Conditions | TRANSCONDUCTANCE 6 000 µMHOS
GRID #
1 mA
Typical Operating Conditions | GRID #1 VOLTAGE (APPROX.) FOR Ib=1.0 MA. —45 voLTs
GRID #
45 V
Typical Operating Conditions | GRID #1 VOLTAGE (APPROX.) FOR Ib=1.0 MA. —45 voLTs

Data set 03

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

DCPlateSupplyVoltageBoostPlusDC
700 V
HorizontalDeflection
Peak Positive Pulse Plate Voltage
6600 V
HorizontalDeflection
Peak Negative Pulse Plate Voltage
1500 V
HorizontalDeflection
PeakNegativeGrid1Voltage
300 V
HorizontalDeflection
Peak Cathode Current
400 mA
HorizontalDeflection
BulbTemperatureMaximum
210 C
HorizontalDeflection

Characteristic

Plate Voltage
250 V
AverageCharacteristics
Screen Voltage
250 V
AverageCharacteristics
Grid1 Voltage
-15 V
AverageCharacteristics
Plate Current
75 mA
AverageCharacteristics
Screen Current
4 mA
AverageCharacteristics
TriodeAmplificationFactor
8
TriodeConnection; PlateAndScreen=250V; Grid1=-15V

Capacitance

Grid1 To Plate Capacitance
0.8 pF
Input Capacitance
11 pF
Output Capacitance
6 pF