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Specialized - Switching Tube ·SurgeProtector

UAM120

Subminiature flying-lead surge arrester for protecting telecommunication and signalling installations against momentary low-energy surge voltages.

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

Description

Subminiature surge arrester with flying leads for protecting telecommunication and signalling installations against low-energy surge voltages.

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
-
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

SurgeProtector

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Published electrical characteristics preserved in parameter rows; regulator-specific fields promoted where applicable.

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

1962 Cerberus

Published operating points and test conditions from this source.

SECTION 1

SurgeProtector

Other

  • Static breakdown voltage

    90 to 160 V

  • Dynamic breakdown voltage

    - to 1500 V

    Pulse 2 kV - 1/50

  • AC shunting current

    1 A

    1 s, 50 Hz

  • Surge current

    1 kA

    Pulse 15/50

Characteristics

  • Glow sustaining voltage

    80 V

Capacitance

  • Capacitance

    4 pF