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6U3

Heater-cathode half-wave high-vacuum rectifier designed for television damper service, with 4 kV peak inverse-voltage capability.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 9BM
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 900 mA

Description

A heater-cathode half-wave high-vacuum rectifier used in television damper service. The printed table specifies a maximum DC output current of 180 mA and a peak inverse voltage of 4000 V.

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: 9BM
Socket code: B9A
Base pins: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 900 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9BM - 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

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 4000 V
Rectifier nominal output current: 180 mA
Rectifier peak forward current: 400 mA
Rectifier forward voltage drop: 16 V
Rectifier max heater-cathode voltage: 650 V

Half-wave high-vacuum rectifier section.

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

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Maximum peak inverse voltage
4000 V
TVDamper
Maximum DC output current
180 mA
TVDamper
Maximum peak current
400 mA
TVDamper

Characteristics

Forward voltage drop
16 V
At 180 mA DC

Data set 02

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

Heater voltage
6.3 V
Heater current
900 mA

Other

Peak inverse plate voltage
4000 V
Peak plate current
400 mA
Average plate current
180 mA
Peak heater-cathode voltage
650 V
Pezk inverse plate voltage (see nove
4000 volts
PublishedLine: Pezk inverse plate voltage (see nove 2) 4000 volts
Pezk plate current
400 ma
PublishedLine: Pezk plate current 400 ma
cathode positive with respect to heater)
650 volts
PublishedLine: cathode positive with respect to heater) 650 volts
D.C. component of heater-cathode voltage
450 volts
PublishedLine: D.C. component of heater-cathode voltage 450 volts