5744WB

Ruggedized high-mu subminiature triode for UHF converter or oscillator service and general audio amplification under severe temperature, shock, and vibration.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B9A
Base pins: 8
Nominal heater: 6.3 V / 200 mA

Description

The 5744WB is a ruggedized high-mu subminiature triode for UHF frequency conversion or oscillator service and general audio-frequency voltage amplification under severe temperature, shock and vibration.

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: -
Socket code: B9A
Base pins: 8
Nominal heater voltage: 6.3 V
Nominal heater current: 200 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

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

Plate resistance: 17500 Ω
Transconductance: 0.004 S
Amplification factor: 70
Max plate voltage: 250 V
Max plate dissipation: 1.3 W
Max cathode current: 6.5 mA

Published promoted fields populated semantically; identical repeated sections compressed.

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

Triode

Characteristic

Plate Resistance
17500 ohm
PlateVoltage=250V
Amplification Factor
70
PlateVoltage=250V
Transconductance
4000 uS
PlateVoltage=250V

Data set 02

1966 Tung Sol Electronic Tubes 3 of 4

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Grid-to-plate capacitance
0.83 pF
WholeTube
Grid-to-cathode capacitance
2.6 pF
WholeTube
Plate-to-cathode capacitance
0.9 pF
WholeTube

Other

Plate voltage
250 V
ClassA1
Cathode bias resistance
500 ohm
ClassA1
Amplification factor
70
ClassA1
Transconductance
4000 µS
ClassA1
Maximum plate voltage
275 V
WholeTube
Maximum plate dissipation
1.3 W
WholeTube
Maximum plate current
6.5 mA
WholeTube
Maximum heater-cathode voltage
200 V
WholeTube