Skip to main content

Specialized - Switching Tube ·MicrowaveTRSwitch

8353

Cold-cathode decimal counting and selector tube with ten output cathodes and pulsed guide electrodes, designed for decade counting, sequencing, and switching functions.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
B12A
Base pins
-
Nominal heater
-

Description

Cold-cathode decimal counting/selector tube with ten output cathodes and pulsed guide electrodes.

Socket description

Duodecal 12-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B12A
Base pins
-
Nominal heater voltage
-
Nominal heater current
-
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

MicrowaveTRSwitch

X-ray radiationInterelectrode capacitances
Max plate voltage
800 V
Max cathode current
0.6 mA
Regulator maximum current
0.6 mA

Published maximum ratings and characteristics promoted semantically from the approved source.

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

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

MicrowaveTRSwitch

Other

  • Maximum Plate Voltage

    800 V

  • Maximum Cathode Current

    0.6 mA

  • Anode Supply Voltage Minimum

    35 V

  • Anode Supply Voltage Maximum

    800 V

  • Anode Current Minimum

    0.3 mA

  • Anode Current Maximum

    0.6 mA

  • Maximum Input Frequency

    4000 Hz

Data set 02

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

MicrowaveTRSwitch

Construction

  • Output cathodes

    0 through 9

Other

  • Anode supply voltage maximum

    800 V

  • Anode current maximum

    0.6 mA

  • Pulse repetition maximum

    4 kpps

    Pulse

  • Typical anode supply voltage

    350 V

  • Nominal tube drop

    187 V

  • Guide bias minimum

    35 V

  • Square drive-pulse amplitude minimum

    -75 V

    Pulse

  • Double-pulse width minimum

    60 us

    Pulse

  • Forced-reset pulse amplitude minimum

    -120 V

    Pulse

  • Forced-reset pulse width minimum

    50 us

    Pulse

  • Cathode load resistance maximum

    150 kohm

Characteristics

  • Transfer voltage

    140 V

Application

  • Application

    Decimal pulse counter / selector