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Rectifier - Half Wave ·Rectifier

NL604

National Electronics directly heated industrial power rectifier. Its massive filament provides multiampere output for heavy AC-to-DC conversion.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
UX4
Base pins
-
Nominal heater
2.5 V / 11.5 A

Description

The NL604 is a National Electronics industrial rectifier tube with published DC output-current and peak-inverse-voltage ratings.

Socket description

Medium-shell UX 4-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
UX4
Base pins
-
Nominal heater voltage
2.5 V
Nominal heater current
11.5 A
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

Rectifier

X-ray radiationInterelectrode capacitances
Max cathode current
2.5 A
Rectifier peak inverse voltage
900 V
Rectifier nominal output current
2.5 A
Rectifier peak forward current
10 A
Rectifier forward voltage drop
10 V
Rectifier warm-up time
15 s

Published rectifier ratings promoted from technical-information table.

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

1956 National Electronics Industrial Tubes

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Maximum peak inverse voltage

    900 V

    Published datasheet value

  • Maximum DC output current

    2.5 A

    Published datasheet value

  • Maximum instantaneous output current

    10 A

    Published datasheet value

  • Maximum AC short-circuit current

    150 A

    Published datasheet value

Characteristics

  • Heating time

    15 s

    Published datasheet value

  • Typical arc drop

    10 V

    At stated peak current

Data set 02

1957 National Electronics

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Maximum DC output current

    2.5 A

  • Maximum instantaneous output current

    10 A

  • Maximum peak inverse voltage

    900 V

Characteristic

  • Filament heating time

    15 s

  • Typical arc drop

    10 V

  • Typical anode starting voltage

    10 V

Construction

  • Filling

    Mercury vapor

Application

  • Service

    Industrial power rectifier