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Voltage - Triode (single) ·Triode

WD12

Low-voltage directly heated triode for detector and amplifier service in battery-operated equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
1.1 V / 250 mA

Description

Electrical equivalent explicitly stated by the WX12 source; directly heated triode for detector, RF-amplifier, and audio-amplifier service.

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
1.1 V
Nominal heater current
250 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

Triode

X-ray radiationInterelectrode capacitances
Max plate voltage
135 V

Published ratings and characteristics promoted where clearly applicable; additional published values retained as section 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

1940 RCA

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Heater or filament voltage

    1.1 V

    Published nominal value

  • Heater or filament current

    250 mA

    Published nominal value

  • Electrical equivalence

    WX12

    Explicitly stated by source

Other

  • Maximum plate voltage

    135 V

    WX12 source states electrical identity with WD12