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Voltage - Dual Triode (similar) ·Triode-Triode

6414

Long-life medium-mu double triode designed for electronic-computer and on-off control circuits, particularly applications involving extended cutoff operation and repeated switching duty.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 450 mA

Description

Long-life medium-mu double triode designed for electronic-computer and on-off control applications requiring extended cutoff operation.

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
9
Nominal heater voltage
6.3 V
Nominal heater current
450 mA
Parallel heater voltage
6.3 V
Parallel heater current
450 mA
Series capable
Yes

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Transconductance
0.0055 S
Amplification factor
42.5
Max plate voltage
220 V
Max plate dissipation
2 W
Max cathode current
17 mA

Published ratings and characteristics promoted where clearly stated; identical repeated sections compressed where applicable.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Transconductance
0.0055 S
Amplification factor
42.5
Max plate voltage
220 V
Max plate dissipation
2 W
Max cathode current
17 mA

Second identical physical triode section; added to align rows with SectionCount.

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

1938 Raytheon

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater or filament voltage

    6.3 V

    Published nominal or representative value

  • Heater or filament current

    450 mA

    Published nominal or representative value

  • Transconductance

    5500 µS

    Published operating characteristic

Other

  • Maximum plate dissipation

    2 W

    Published maximum rating