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Voltage Pentode ·Pentode

CK545DX

Pentode intended for voltage-amplifier or receiving service; available source does not clearly establish a narrower functional classification.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
5F
Socket code
B5D
Base pins
5
Nominal heater
0.625 V / 7.5 mA

Description

Directly heated subminiature pentode for voltage amplifier service.

Socket description

Subminiature wire-ended

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
5F
Socket code
B5D
Base pins
5
Nominal heater voltage
0.625 V
Nominal heater current
7.5 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

5F - 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
Plate resistance
12000000 Ω
Transconductance
0.000016 S

Published subminiature operating-table characteristics; plate/screen voltages below are typical operating values, not promoted as maxima.

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 Raytheon Special Purpose Tubes

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

  • Plate voltage

    15 V

  • Grid 1 voltage

    -0.625 V

  • Grid 2 voltage

    15 V

  • Plate current

    0.0046 mA

  • Grid 2 current

    0.002 mA

Characteristic

  • Plate resistance

    12 MOhm

  • Transconductance

    16 uS