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Voltage Tetrode ·Tetrode

KTZ41

High-slope high-frequency tetrode for wide-band amplification, particularly in television receivers requiring substantial RF or video-frequency gain.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
4 V / 1 A

Description

High-slope HF tetrode for wide-band amplification, particularly television receivers.

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
4 V
Nominal heater current
1 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

Tetrode

X-ray radiationInterelectrode capacitances
Plate resistance
1000000 Ω
Transconductance
0.012 S
Max plate voltage
250 V
Max screen voltage
250 V

Promoted values mapped from printed rating/approximate-data tables; additional operating points and capacitances retained as 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

1955 Marconi

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • Grid-Anode Capacitance

    0.008 pF

  • Anode-Cathode Capacitance

    10.5 pF

  • Grid-Cathode Capacitance

    14 pF

  • Typical Anode Voltage

    250 V

  • Typical Screen Voltage

    250 V

  • Typical Grid Bias

    -2.5 V

  • Typical Plate Resistance

    1 Mohm