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Rectifier - Half Wave ·Rectifier

NL616

National Electronics directly heated industrial power rectifier. Its heavy filament provides multiampere output and very strong peak-current capability.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
UX4
Base pins
4
Nominal heater
2.5 V / 9 A

Description

The NL616 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
4
Nominal heater voltage
2.5 V
Nominal heater current
9 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
1250 V
Rectifier nominal output current
2.5 A
Rectifier peak forward current
30 A
Rectifier forward voltage drop
9 V
Rectifier warm-up time
20 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

    1250 V

    Published datasheet value

  • Maximum DC output current

    2.5 A

    Published datasheet value

  • Maximum instantaneous output current

    30 A

    Published datasheet value

  • Maximum AC short-circuit current

    300 A

    Published datasheet value

Characteristics

  • Heating time

    20 s

    Published datasheet value

  • Typical arc drop

    9 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

    30 A

  • Maximum peak inverse voltage

    1250 V

Characteristic

  • Filament heating time

    20 s

  • Typical arc drop

    9 V

  • Typical anode starting voltage

    13 V

Construction

  • Filling

    Mercury vapor