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Tube Tinker — Electron Tube Database
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Power - Beam (NOT sweep) ·BeamPower

50HN5

High-perveance beam-power pentode with very high power sensitivity, developed for economical low-cost audio power amplifiers.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B7G
Base pins
7
Nominal heater
50 V / 150 mA

Description

High-perveance beam-power audio output tube with very high power sensitivity.

Socket description

Miniature 7-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B7G
Base pins
7
Nominal heater voltage
50 V
Nominal heater current
150 mA
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

Beam Power

X-ray radiationInterelectrode capacitances
Plate resistance
7500 Ω
Transconductance
0.017 S
Amplification factor
13
Max plate voltage
330 V
Max screen voltage
250 V
Max plate dissipation
12 W
Max screen dissipation
2.5 W
Max cathode current
120 mA

Published source ratings and characteristics promoted where applicable; additional electrical and operating data retained as parameters.

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

1964 RMA EIA

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristics

  • Characteristic plate voltage

    130 V

  • Characteristic screen voltage

    130 V

  • Plate current

    70 mA

  • Screen current

    1 mA

  • Grid cutoff voltage

    -33 V

Other

  • Class-A plate voltage

    140 V

    ClassA

  • Class-A screen voltage

    140 V

    ClassA

  • Class-A fixed grid voltage

    -5.7 V

    ClassA

  • Class-A load resistance

    1700 ohm

    ClassA

  • Class-A power output

    4 W

    ClassA

  • Class-A total harmonic distortion

    9 %

    ClassA

  • Class-AB1 push-pull plate voltage

    260 V

    ClassAB,PushPull

  • Class-AB1 push-pull load plate-to-plate

    5500 ohm

    ClassAB,PushPull

  • Class-AB1 push-pull power output

    16.5 W

    ClassAB,PushPull

  • Class-AB1 distortion

    1.5 %

    ClassAB,PushPull

  • Heater-cathode voltage maximum

    200 V

Data set 02

1965 Westinghouse Data Book

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Typical plate voltage

    120 V

    ClassA

  • Typical screen voltage

    120 V

    ClassA

  • Typical grid1 bias

    -6 V

    ClassA

  • Typical plate current

    60 mA

    ClassA

  • Load resistance

    1800 ohm

    ClassA

  • Power output

    3.5 W

    ClassA

Application

  • Application

    High-sensitivity audio output amplifier