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Diode (NOT rectifier) ·Diode-Diode

KB2

European battery duodiode intended for detector and rectifier service in portable receiving equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
-
Base pins
-
Nominal heater
2 V / 95 mA

Description

KB2 is listed in the supplied valve table as a duodiode. Published operating and characteristic values were transcribed from its target row.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
2 V
Nominal heater current
95 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

2 physical sections, each with unique specifications.

Section 1

Diode

X-ray radiationInterelectrode capacitances
Max plate voltage
125 V
Rectifier peak inverse voltage
125 V
Rectifier nominal output current
0.5 mA

Published target-row operating and characteristic values reviewed.

Section 2

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Second physical diode section added in approved section-structure reconciliation.

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

Diode

Characteristic

  • Heater/filament voltage

    2 V

    Published heater/filament rating

  • Heater/filament current

    95 mA

    Published heater/filament rating

Data set 02

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Diode

Other

  • Maximum peak diode voltage

    125 V

  • Maximum diode current

    0.5 mA

Capacitance

  • Inter-diode capacitance

    0.3 pF

  • Diode-to-cathode capacitance

    3 pF