5BC3A

Novar full-wave vacuum rectifier for radio and television supplies with high DC requirements. Its 5 V heater supports approximately 348 mA DC output and substantial peak-current capability.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 9QJ
Socket code: B9A
Base pins: 9
Nominal heater: 5 V / 3 A

Description

Novar full-wave vacuum rectifier for radio and television power supplies with high DC requirements. Electrical ratings, characteristics, and capacitances were interpreted from the supplied RCA manual excerpt where reproduced; reference-only entries were not supplemented from outside sources.

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: 9QJ
Socket code: B9A
Base pins: 9
Nominal heater voltage: 5 V
Nominal heater current: 3 A
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9QJ - 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

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 1700 V
Rectifier nominal output current: 348 mA
Rectifier peak forward current: 1 A

Full-wave Novar rectifier; capacitor-input and choke-input operating points retained as parameters.

Section 2

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 1700 V
Rectifier nominal output current: 348 mA
Rectifier peak forward current: 1 A

Second physical rectifier section; promoted electrical properties populated from identical 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

1971 RCA HB3 Binder 4 of 7

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Filament voltage
5 V
Filament current
3 A
Peak inverse plate voltage
1700 V
EachPlate
Peak plate current per plate
1 A
EachPlate
Hot-switching transient plate current per plate
5 A
HotSwitching
AC plate-to-plate supply voltage
600 V
CapacitorInputFilter
Filter-input capacitor
40 uF
CapacitorInputFilter
Effective plate-supply impedance per plate
21 ohm
CapacitorInputFilter
DC output voltage at 300 mA
290 V
CapacitorInputFilter
DC output voltage at 150 mA
335 V
CapacitorInputFilter
AC plate-to-plate supply voltage
900 V
CapacitorInputFilter
Effective plate-supply impedance per plate
67 ohm
CapacitorInputFilter
DC output voltage at 275 mA
460 V
CapacitorInputFilter
DC output voltage at 137.5 mA
520 V
CapacitorInputFilter
AC plate-to-plate supply voltage
1100 V
CapacitorInputFilter
Effective plate-supply impedance per plate
97 ohm
CapacitorInputFilter
DC output voltage at 162 mA
630 V
CapacitorInputFilter
DC output voltage at 81 mA
680 V
CapacitorInputFilter
Filter-input choke
10 H
ChokeInputFilter
DC output voltage at 346 mA
340 V
ChokeInputFilter;900VAC
DC output voltage at 275 mA
440 V
ChokeInputFilter;1100VAC
DC output voltage at 174 mA
355 V
ChokeInputFilter;900VAC
DC output voltage at 137.5 mA
455 V
ChokeInputFilter;1100VAC
Heater/filament voltage
5 V
DerivativeSheet
Heater/filament current
3 A
DerivativeSheet

SECTION 2

Rectifier

Other

Filament voltage
5 V
Filament voltage
5 V
Filament current
3 A
Peak inverse plate voltage
1700 V
EachPlate
Peak plate current per plate
1 A
EachPlate
Hot-switching transient plate current per plate
5 A
HotSwitching
AC plate-to-plate supply voltage
600 V
CapacitorInputFilter
Filter-input capacitor
40 uF
CapacitorInputFilter
Effective plate-supply impedance per plate
21 ohm
CapacitorInputFilter
DC output voltage at 300 mA
290 V
CapacitorInputFilter
DC output voltage at 150 mA
335 V
CapacitorInputFilter
AC plate-to-plate supply voltage
900 V
CapacitorInputFilter
Effective plate-supply impedance per plate
67 ohm
CapacitorInputFilter
DC output voltage at 275 mA
460 V
CapacitorInputFilter
DC output voltage at 137.5 mA
520 V
CapacitorInputFilter
AC plate-to-plate supply voltage
1100 V
CapacitorInputFilter
Effective plate-supply impedance per plate
97 ohm
CapacitorInputFilter
DC output voltage at 162 mA
630 V
CapacitorInputFilter
DC output voltage at 81 mA
680 V
CapacitorInputFilter
Filter-input choke
10 H
ChokeInputFilter

Data set 02

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Hot-switching transient plate current per plate
6 A
AC plate-to-plate supply voltage
600 V
CapacitorInputFilter
Filter input capacitor
40 uF
CapacitorInputFilter
DC output voltage at 300 mA
290 V
CapacitorInputFilter
AC plate-to-plate supply voltage
900 V
ChokeInputFilter
Filter input choke
10 H
ChokeInputFilter
DC output voltage at 348 mA
340 V
ChokeInputFilter

SECTION 2

Rectifier

Other

Hot-switching transient plate current per plate
6 A
AC plate-to-plate supply voltage
600 V
CapacitorInputFilter
Filter input capacitor
40 uF
CapacitorInputFilter
DC output voltage at 300 mA
290 V
CapacitorInputFilter
AC plate-to-plate supply voltage
900 V
ChokeInputFilter
Filter input choke
10 H
ChokeInputFilter
DC output voltage at 348 mA
340 V
ChokeInputFilter