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4055

High-mu ceramic-metal pencil triode for plate-pulsed RF amplification, oscillation, and frequency multiplication. High transconductance, compact construction, and kilovolt pulse capability suit specialized high-frequency pulsed transmitter circuits.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 295 mA

Description

High-mu ceramic-metal pencil triode for plate-pulsed RF power amplification, oscillation, and frequency multiplication.

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: 6.3 V
Nominal heater current: 295 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

Triode

X-ray radiationInterelectrode capacitances

Transconductance: 0.035 S
Amplification factor: 70
Max plate voltage: 3500 V
Max plate dissipation: 10 W
Max grid dissipation: 2 W
Max cathode current: 40 mA

High-mu ceramic-metal pencil triode. Plate resistance derived from published μ/gm at the published characteristic point.

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

1971 RCA HB3 Binder 6 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater/filament voltage
6.3 V
Heater/filament current
295 mA
Maximum plate voltage
3500 V
Maximum plate dissipation
10 W
Typical pulsed plate voltage
1750 V
PulseRF
Useful power output
1300 W
PulseRF
Peak heater-cathode voltage
60 V
BothPolarities
Operating frequency
3.3 GHz
PlatePulsedOscillator

Characteristic

Amplification factor
70
Transconductance
35000 uS
Plate resistance
2000 ohm
DerivedFromPublishedMuAndGm