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
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- 8
- Nominal heater
- 6.3 V / 650 mA
Description
EC57 is described in the supplied Philips material as a disc-seal triode superseded by EC157.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
- 6.3 V
- Nominal heater current
- 650 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
- 0.017 S
- Amplification factor
- 43
- Max plate voltage
- 300 V
- Max plate dissipation
- 10 W
- Max cathode current
- 70 mA
Philips EC57 disc-seal triode designed for broadband microwave power 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 70 mA. Separate 500 V cold-anode limit. Higher-power 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 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