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Tube Tinker — Electron Tube Database
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Voltage - Dual Triode (similar) ·Triode-Triode

CV455

CV455 is documented only as an explicit equivalent or co-designation of B309; the available source does not support a more detailed independent functional description.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
-
Base pins
-
Nominal heater
12.6 V / 150 mA

Description

CV455 is explicitly presented on the source as an equivalent or co-designation of B309.

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
12.6 V
Nominal heater current
150 mA
Parallel heater voltage
6.3 V
Parallel heater current
300 mA
Series capable
Yes

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
10000 Ω
Transconductance
0.0055 S
Amplification factor
55
Max plate voltage
300 V
Max plate dissipation
2.5 W

Representative section for two equal triode systems.

Section 2

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
10000 Ω
Transconductance
0.0055 S
Amplification factor
55
Max plate voltage
300 V
Max plate dissipation
2.5 W

Second physical triode restored.

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

Triode

Other

  • Series heater voltage

    12.6 V

  • Series heater current

    150 mA

  • Parallel heater voltage

    6.3 V

  • Parallel heater current

    300 mA

  • Maximum plate voltage

    300 V

  • Maximum plate dissipation per section

    2.5 W

  • Typical AF plate voltage

    250 V

    ClassA

  • RF amplifier frequency limit

    200 MHz

  • Frequency-changer frequency limit

    400 MHz

Characteristic

  • Amplification factor

    55

  • Transconductance

    5500 uS

  • Plate resistance

    10000 ohm

Capacitance

  • Grid-plate capacitance

    1.6 pF

  • Grid-cathode capacitance

    2.5 pF

  • Plate-cathode capacitance

    0.4 pF