EC56

Philips disc-seal UHF triode superseded by EC157.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: 8
Nominal heater: 6.35 V / -

Description

EC56 is described in the supplied Philips material as a disc-seal triode superseded by EC157. The supplied sheet is a replacement notice stating that EC157 supersedes this type.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 8
Nominal heater voltage: 6.35 V
Nominal heater current: -
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: 0.017 S
Amplification factor: 43
Max plate voltage: 300 V
Max plate dissipation: 10 W
Max cathode current: 35 mA

Philips EC56 disc-seal triode for low-level broadband microwave amplification in grounded-grid circuits. Typical operating point: anode 180 V, current 30 mA, gm 17 mA/V and amplification factor 43. Absolute limits: plate 300 V, dissipation 10 W, cathode current 35 mA. Separate 500 V cold-anode limit. Grounded-grid operation documented at 4 GHz.

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

1963 Philips Electron Tubes Handbook V3

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Replacement tube
EC157
Philips replacement notice

Data set 02

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Typical anode voltage
180 V
Typical anode current
30 mA
GroundedGrid