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RX21A

Eimac mercury-vapor half-wave rectifier designed for high peak inverse voltage with relatively low forward drop. Its single rectifying section is intended for high-voltage professional power supplies.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 2.5 V / 10 A

Description

EITEL-McCULLOU GH, INC. VAPOR The Eimac RX2IA is a half-wave mercury vapor rectifier incorporating features which enable it to withstand high peak inverse voltages and to conduct at relatively low applied voltages. The shielded ribbon filament, edgewise-wound, provides a large emmision reserve and long life. Voltage - - - - . - - R - - - - - 2.5 volts Current - - - - - - - . . . - - - 10 amperes Tube Voltage Drop (approx.) . . - - 15 volts

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: 2.5 V
Nominal heater current: 10 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

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 11000 V
Rectifier nominal output current: 750 mA
Rectifier peak forward current: 3 A
Rectifier forward voltage drop: 15 V
Rectifier warm-up time: 30 s

Promoted fields populated only where the published value maps directly to the schema; device-specific values retained as parameters.

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

1962 Eimac

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Voltage - - - - . - - R
2.5 V
Voltage - - - - . - - R - - - - - 2.5 volts
Current
10 A
Current - - - - - - - . . . - - - 10 amperes
Tube Voltage Drop (approx.)
15 V
Tube Voltage Drop (approx.) . . - - 15 volts
PEAK INVERSE ANODE VOLTAGEz
11000
PEAK INVERSE ANODE VOLTAGEz - - - - - - - 11,000 MAX. YOLTS
PEAK ANODE CURRENT
3 A
PEAK ANODE CURRENT - - - - - - - - - - 3 MAX. AMPERES
AYERAGE ANODE CURRENT
75 A
AYERAGE ANODE CURRENT - - - - - - - - .75 MAX. AMPERES
SUPPLY FREQUENCY
150
SUPPLY FREQUENCY - - - - - - 150 MAX. C. P. S.
CONDENSED-MERCURY TEMPERATURE RANGE? [1]
20
CONDENSED-MERCURY TEMPERATURE RANGE? - - - - - - 20-60 °C
CONDENSED-MERCURY TEMPERATURE RANGE? [2]
-60
CONDENSED-MERCURY TEMPERATURE RANGE? - - - - - - 20-60 °C
Published value [1]
2 V
2Temperatures in excess of 60° C limit the peak-inverse rating to 5,000 volts with a corresponding reduction in
Published value [2]
60 V
2Temperatures in excess of 60° C limit the peak-inverse rating to 5,000 volts with a corresponding reduction in
Published value [3]
5000 V
2Temperatures in excess of 60° C limit the peak-inverse rating to 5,000 volts with a corresponding reduction in
conducting and tends to reduce the life of the filament. A temperature tifier and load, to prevent exceeding the maximum peak current of
3
conducting and tends to reduce the life of the filament. A temperature tifier and load, to prevent exceeding the maximum peak current of 3
ELECTRICAL current from exceeding
3 A
ELECTRICAL current from exceeding 3 amperes. This is for the usual case where the
value of [1]
2.5 V
value of 2.5 volts. Unavoidable variations in filament voltage must be In the single phase cricuits (1 and 3), if the current drawn by the
value of [2]
1 V
value of 2.5 volts. Unavoidable variations in filament voltage must be In the single phase cricuits (1 and 3), if the current drawn by the
value of [3]
3 V
value of 2.5 volts. Unavoidable variations in filament voltage must be In the single phase cricuits (1 and 3), if the current drawn by the
kept within the range of [1]
2.4 V
kept within the range of 2.4 to 2.6 volts. A filament voltage less than load is reduced or varies under operating conditions to values less
kept within the range of [2]
2.6 V
kept within the range of 2.4 to 2.6 volts. A filament voltage less than load is reduced or varies under operating conditions to values less
the minimum recommended value may cause a high tube voitage drop, than approximately
70
the minimum recommended value may cause a high tube voitage drop, than approximately 70% of the indicated maximum d-c load current, a
tions, a delay of approximately
30 s
tions, a delay of approximately 30 seconds will be required. The delay When ‘'condenser input'’ filter is used, the peak current will be rela-
tube. In radio transmitter applications the filament should be kept at the capacitor may be as high as
1.4
tube. In radio transmitter applications the filament should be kept at the capacitor may be as high as 1.4 times the nominal RMS voltage of
Published value [1]
60
.060 +.003 INPUT YOLTS* APPROX. D-C MAX. D-C
Published value [2]
3
.060 +.003 INPUT YOLTS* APPROX. D-C MAX. D-C
' dition such that the peak inverse voltage is limited to
5500 V
' dition such that the peak inverse voltage is limited to 5500 volts, the

Data set 02

1965 Eimac Tube Manual

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

PEAKINVERSEANODEVOLTAGE*
11000 V
PEAKINVERSEANODEVOLTAGE* -------------- 11,000MAXo VOLTS
PEAK ANODE CURRENT ----- I
3 mA
PEAK ANODE CURRENT ----- I ----------- 3 MAXo AMPERES
AVERAGE ANODE CURRENT
75 mA
AVERAGE ANODE CURRENT ----------------. 75 MAXo AMPERES
SUPPLYFREQUENCY
150
SUPPLYFREQUENCY ------------------ 150MAX. CIJS
CONDENSED-MERCURY TEMPERATURE RANGE** [1]
20
CONDENSED-MERCURY TEMPERATURE RANGE** ---------- 20-60° CENTIGRADE
CONDENSED-MERCURY TEMPERATURE RANGE** [2]
-60
CONDENSED-MERCURY TEMPERATURE RANGE** ---------- 20-60° CENTIGRADE
* Temperatures in excess of [1]
60
* Temperatures in excess of 60°C limit the peak-inverse rating to 5500 volts with a corresponding
* Temperatures in excess of [2]
5500
* Temperatures in excess of 60°C limit the peak-inverse rating to 5500 volts with a corresponding
Mounting: The RX2
1 V
Mounting: The RX21A must be mounted vertically, the recommended value raises the voltage at which
This tempera.ture should be malntalned at [1]
40 V
This tempera.ture should be malntalned at 40° ±5°C voltage as measured directly at the filament pins,
This tempera.ture should be malntalned at [2]
5 V
This tempera.ture should be malntalned at 40° ±5°C voltage as measured directly at the filament pins,
The filament of the RX2
1
The filament of the RX21A should be allowed to reach
imately
30
imately 30 seconds will be required. The delay time detrimental to tube life and make proper operation