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Voltage Pentode - Sharp Cutoff (single) ·Pentode

B2046

Philips high-frequency pentode for RF voltage amplification, combining substantial transconductance with exceptionally high plate resistance.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B5
Base pins
5
Nominal heater
20 V / 180 mA

Description

B2046 is listed in the supplied tube table as a high-frequency pentode. Published electrical values were transcribed from its target row.

Socket description

European 5-pin base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B5
Base pins
5
Nominal heater voltage
20 V
Nominal heater current
180 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

Pentode

X-ray radiationInterelectrode capacitances
Plate resistance
2200000 Ω
Transconductance
0.005 S
Max plate voltage
250 V
Max screen voltage
250 V
Max plate dissipation
1 W
Max screen dissipation
0.3 W
Max cathode current
10 mA

Published table ratings and electrical characteristics reviewed; ambiguous cells were not inferred.

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

1938 Philips Miniwatt Vacuum Tube Catalog

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Maximum plate voltage

    200 V

    Published table rating

  • Plate voltage

    200 V

    Published operating point

  • Screen voltage

    100 V

    Published operating point

  • Control-grid bias

    2 V

    Published operating point

  • Plate current

    3 mA

    Published operating point

  • Screen current

    1.1 mA

    Published operating point

Characteristic

  • Plate resistance

    2200000 ohm

    Published table characteristic

  • Transconductance

    5000 µS

    Published table characteristic

  • Heater/filament voltage

    20 V

    Published heater/filament rating

  • Heater/filament current

    180 mA

    Published heater/filament rating

Data set 02

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Normal plate current

    3 mA

  • Average screen-grid current

    1.2 mA