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6BD4

High-voltage triode designed for electronic voltage-regulator service, controlling or shunting current to stabilize demanding power supplies.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 6BD4
Socket code: B7G
Base pins: 7
Nominal heater: 6.3 V / 600 mA

Description

Beam triode for very-high-voltage electronic regulation and voltage-control service.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 6BD4
Socket code: B7G
Base pins: 7
Nominal heater voltage: 6.3 V
Nominal heater current: 600 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

6BD4 - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Amplification factor: 1650
Max plate voltage: 300 V
Max plate dissipation: 20 W
Max cathode current: 1.5 mA
Rectifier max heater-cathode voltage: 180 V

Published promoted fields populated semantically; identical repeated sections compressed where applicable.

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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Heater Voltage (ACor DC).......................... 6.3 Volts
6.3 V
Heater Voltage (ACor DC).......................... 6.3 Volts
DCPlate Current......................... 1.5 1.5 Ma
1.5 mA
DCPlate Current......................... 1.5 1.5 Ma
Plate Dissipation. ......................... 20 25 Watts
25 W
Plate Dissipation. ......................... 20 25 Watts
Resistance of More Than 8 Megohms. . .. 3.0 4.0 Megohms
4 Megohm
Resistance of More Than 8 Megohms. . .. 3.0 4.0 Megohms
Resistance of Less Than 8 Megohms. . ... See See
8 Megohm
Resistance of Less Than 8 Megohms. . ... See See
Operation of the 6BD4 at plate voltages above 16,000 volts (absolute
16 V
Operation of the 6BD4 at plate voltages above 16,000 volts (absolute
The Types 6BD4 and 6BD4A are beam triode, high-voltage, low current
4 A
The Types 6BD4 and 6BD4A are beam triode, high-voltage, low current

Other

Maximum Peak Heater-Cathode Voltage................ 180 Volts
180 V
Maximum Peak Heater-Cathode Voltage................ 180 Volts

Data set 02

1958 Brimar Radio Valve No 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Heater Voltage
6.3 V
Heater Current
600 mA

Data set 03

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Maximum unregulated DC supply voltage
40000 V
HighVoltageShuntRegulator
Maximum DC plate current
1.5 mA
HighVoltageShuntRegulator
Maximum plate dissipation
20 W
HighVoltageShuntRegulator

Data set 04

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Maximum DC Plate Current
1.5 mA
Plate Dissipation
0.2 W

Data set 05

1966 Tung Sol Electronic Tubes 1 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Unregulated DC supply voltage maximum
40000 V
VoltageControl
DC plate voltage maximum
20000 V
VoltageControl
DC plate current maximum
2.5 mA
VoltageControl
Grid voltage DC maximum
-125 V
VoltageControl
Grid voltage peak maximum
-550 V
VoltageControl
Regulated DC output voltage at 0 mA load
20000 V
VoltageControl
Regulated DC output voltage at 1 mA load
19700 V
VoltageControl

Characteristic

Amplification factor
1650
Section1