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EA52

UHF thermionic diode intended for high-frequency signal rectification, combining low capacitance with operation suited to radio-frequency measurement and detection circuits.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: 3
Nominal heater: 6.3 V / 300 mA

Description

EA52 is listed in the supplied Amperex material as a UHF diode. Published ratings and characteristics were captured from the supplied table.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 3
Nominal heater voltage: 6.3 V
Nominal heater current: 300 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

Diode

X-ray radiationInterelectrode capacitances

Max plate voltage: 1000 V
Max cathode current: 5 mA
Rectifier peak inverse voltage: 1000 V
Rectifier nominal output current: 0.3 mA
Rectifier peak forward current: 5 mA

Measuring-diode limits include 1000 V inverse voltage below 100 MHz and 5 mA peak cathode current.

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

1958 Amperex Industrial

Published operating points and test conditions from this source.

SECTION 1

Diode

Other

Maximum plate voltage
1000 V
Published table
Maximum plate current
0.3 mA
UHF
Maximum frequency
1000 MHz
UHF

Characteristic

Heater/filament voltage
6.3 V
Published rating
Heater/filament current
300 mA
Published rating

Data set 02

195X Tesla

Published operating points and test conditions from this source.

SECTION 1

Diode

Characteristics

Interelectrode capacitances
Published
See source sheet for electrode-specific capacitance values

Data set 03

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Diode

Characteristic

Heater voltage
6.3 V
Published rating
Heater current
300 mA
Published rating

Other

Maximum plate voltage
1000 V
UHF below 100 MHz
Maximum plate current
0.3 mA
UHF
Maximum frequency
1000 MHz
UHF

Data set 04

1963 Philips Electron Tubes Handbook V1a

Published operating points and test conditions from this source.

SECTION 1

Diode

Capacitance

Anode-to-cathode capacitance maximum
0.5 pF
Section1

Other

Diode current
0.5 mA
MeasuringDiode
Peak inverse voltage maximum below 100 MHz
1000 V
MeasuringDiode
Cathode current maximum
300 µA
Section1
Peak cathode current maximum
5 mA
Section1
Heater-to-cathode voltage maximum
50 V
Section1
Maximum operating frequency
1000 MHz
MeasuringDiode

Characteristic

Diode voltage maximum
3 V
At0.5mA

Data set 05

1963 Philips Electron Tubes Handbook V3

Published operating points and test conditions from this source.

SECTION 1

Diode

Characteristic

Heater voltage
6.3 V
Published heater rating
Heater current
300 mA
Published heater rating
Diode voltage drop
3 V
At 0.5 mA
Insulation resistance
10000 MOhm
DiodeToCathode

Other

Diode current
0.5 mA
Published characteristic point

Data set 06

1967 Mullard Receiving and Amplifying Valves

Published operating points and test conditions from this source.

SECTION 1

Diode

Capacitance

Anode Cathode Capacitance
0.5 pF
Maximum

Characteristic

Forward Voltage
3 V
Maximum

Other

Maximum Anode Current
300 uA
Maximum Peak Cathode Current
5 mA
Maximum Heater-Cathode Voltage
50 V
Peak Inverse Voltage
1000 V
Nominal Output Current
0.3 mA
Peak Forward Current
5 mA
Interelectrode Capacitance Data Published
1
SourceTablePresent

Data set 07

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Diode

Characteristic

DIODE DE MESURE pour des fréquences jusqu'a
1000 MHz
Published datasheet value
MESSDIODE fiir Frequenzen bis
1000 MHz
Published datasheet value
Chauffage: igdirect par C.A, ou C.C. Ve =
6.3 V
Published datasheet value
rallele Ir =
300 mA
Published datasheet value
MESSDIODE fiilr Frejuenzen bis
1000 MHz
Published datasheet value
Chauffage: indirect par C.A. ou C.C. Ve =
6.3 V
Published datasheet value
MEASURING DIODE for frequencies up to
1000 MHz
Published datasheet value
Heater voltage Vf =
6.3 V
Published datasheet value
Heater current Ir =
300 mA
Published datasheet value
Between anode and cathode Ca <
0.5 pF
Published datasheet value
Heater voltage Vp =
6.3 V
Published datasheet value
Diode current Ig =
0.5 mA
Published datasheet value
Diode voltage Vg <
3 V
Published datasheet value
at frequencies lower than
100 MHz
Published datasheet value
V4 invp (f <
1000 V
Published datasheet value
at frequencies higher than
100 MHz
Published datasheet value
Vg tnvp (£ >
1000 V
Published datasheet value
volts) Ix = max
300 pA
Published datasheet value
and cathode Vygr = max
50 V
Published datasheet value
tween heater and cathode Rygf = max
20 kQ
Published datasheet value
I =
0.5 mA
Published datasheet value
Va <
3 V
Published datasheet value
Isolement d-k rgg >
0 MQ
Published datasheet value
Ik = max
300 pA
Published datasheet value
Ikp = max
5 mA
Published datasheet value
vkt = max,
50 V
Published datasheet value
Ve = min,
5.6 V
Published datasheet value
Ve = max
7 V
Published datasheet value
Va invp (£ >
100 MHz
Published datasheet value
T VF =
63 V
Published datasheet value

Capacitance

Capacité Ca <
0.5 pF
Published datasheet value
Capacite Ca <
0.5 pF
Published datasheet value