7437

Reliable subminiature flying-lead triode for guided-weapon and severe-environment military equipment.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: B8D/F
Socket code: SUBMINIATURE8
Base pins: 8
Nominal heater: 6.3 V / 150 mA

Description

Reliable subminiature triode with flying leads for guided-weapon equipment.

Socket description

Subminiature 8-lead base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: B8D/F
Socket code: SUBMINIATURE8
Base pins: 8
Nominal heater voltage: 6.3 V
Nominal heater current: 150 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

B8D/F - 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

Transconductance: 0.0042 S
Amplification factor: 20
Max plate voltage: 190 V
Max plate dissipation: 3 W
Max cathode current: 20 mA

Promoted values are taken directly from the supplied datasheet; additional ratings, characteristics and operating points are preserved in TUBE_SECTION_PARAMETER.

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

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Plate supply voltage maximum
350 V

Capacitance

Plate-to-grid capacitance
2.1 pF
ExternalShield
Input capacitance
2 pF
ExternalShield
Output capacitance
2.8 pF
ExternalShield

Characteristics

Plate voltage
100 V
Plate current
8 mA
Transconductance
4200 uS
Amplification factor
20 ratio
Control-grid voltage
-3 V
Maximum noise output voltage
100 mV
Vibration=20g;60-1000Hz