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203Z

High-mu zero-bias Taylor power triode designed especially for Class B audio service. Its high amplification factor permits little or no grid bias, and a pair is specified for roughly 300 W output.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 10 V / 3.25 A

Description

Taylor 203-Z is a high-mu zero-bias triode with a 65-watt nickel anode, designed especially for Class B audio service and capable of about 300 watts output from a pair.

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: 10 V
Nominal heater current: 3.25 A
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

Amplification factor: 85
Max plate voltage: 1250 V
Max plate dissipation: 65 W

Promoted values are from the printed Taylor ratings/characteristics on the approved one-page source; values not published in that source remain unpromoted.

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 Taylor Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Maximum plate current
175 mA
ClassB
Power output
230 W
ClassB TwoTubes PlateVoltage=1000V
Power output
300 W
ClassB TwoTubes PlateVoltage=1250V