Alternatives & variations Download PDF datasheet

4056A

Standard Valves transmitting triode sharing the 4056-A/4056-B specification, intended for RF power service with published limiting and operating data.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: LARGE4BAYONET
Base pins: -
Nominal heater: 6 V / 1.9 A

Description

4056A is a 4056-A/4056-B shared specification; transmitting triode. The Standard Valves sheet publishes construction, electrical constants, limiting conditions, and applicable operating data.

Socket description

Large 4-contact bayonet base

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: LARGE4BAYONET
Base pins: -
Nominal heater voltage: 6 V
Nominal heater current: 1.9 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

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 5500 Ω
Transconductance: 0.0022 S
Amplification factor: 12
Max plate voltage: 1000 V
Max plate dissipation: 35 W
Max cathode current: 100 mA

Published ratings and characteristics promoted from approved datasheet.

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

1946 Standard Telephone and Cables

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Grid-anode capacitance
8.4 pF
Published capacitance
Anode-filament capacitance
4.8 pF
Published capacitance
Grid-filament capacitance
5 pF
Published capacitance