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Voltage Pentode or Tetrode (under 100V) ·Pentode

1Z17B

Directly heated subminiature pentode designed for high-frequency voltage amplification in compact electronic equipment.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
SUBMINIATURE7
Base pins
7
Nominal heater
1.2 V / 48 mA

Description

The 1Z17B is a directly heated subminiature pentode for high-frequency voltage amplification.

Socket description

Subminiature 7-lead base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
SUBMINIATURE7
Base pins
7
Nominal heater voltage
1.2 V
Nominal heater current
48 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

Pentode

X-ray radiationInterelectrode capacitances
Transconductance
0.0015 S
Max plate voltage
90 V
Max screen voltage
60 V
Max cathode current
5 mA

REDO promoted fields populated from published specification/maximum-rating tables 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

195X Russian

Published operating points and test conditions from this source.

SECTION 1

Pentode

Characteristics

  • Anode voltage

    60 V

    Published operating point

  • Grid 2 voltage

    40 V

    Published operating point

  • Anode current

    1.5 to 2.8 mA

    Published range

  • Grid 2 current

    0.3 mA

    Maximum

  • Transconductance

    1 to 2 mA/V

    Published range

  • Transconductance at reduced filament voltage

    0.85 mA/V

    Minimum

  • Equivalent noise resistance

    7 kOhm

    Maximum

  • Input resistance

    80 kOhm

    Minimum; 60 MHz

  • Input capacitance

    2.35 to 4.15 pF

    Published range

  • Output capacitance

    2 to 2.8 pF

    Published range

  • Transfer capacitance

    0.01 pF

    Maximum

  • Anode-cathode capacitance

    0.025 pF

    Maximum

  • Warm-up time

    1 s

    Maximum