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Power - Triode (over 1000V 100W) ·Triode

3CPX100A5

Planar triode for high-frequency electronic service. Available source material confirms planar construction without establishing a narrower application confidently.

Directly heatedCold cathodeCommon cathodeDissimilar

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

Description

3CPX100A5 explicitly identified as same as 7815R.

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: 6 V
Nominal heater current: 1 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

Transconductance: 0.025 S
Amplification factor: 100
Max plate voltage: 3500 V
Max plate dissipation: 100 W
Max grid dissipation: 2 W
Max cathode current: 100 mA

Promoted maximum ratings/characteristics populated from published headings; service-specific values retained in 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

Triode

Other

oscillator, amplifier or frequency multiplier service up to
3
oscillator, amplifier or frequency multiplier service up to 3
voltage regulator service. The
7815
voltage regulator service. The 7815R is normally supplied
The [1]
7815
The 7815 and 7815R feature high mu, high transconduc-
The [2]
7815
The 7815 and 7815R feature high mu, high transconduc-
Heater: Voltage . . . ..ot ittt i ittt ettt et eeenenn [1]
6
Heater: Voltage . . . ..ot ittt i ittt ettt et eeenenn 6.0: 0.3 V
Heater: Voltage . . . ..ot ittt i ittt ettt et eeenenn [2]
0.3
Heater: Voltage . . . ..ot ittt i ittt ettt et eeenenn 6.0: 0.3 V
Current, at [1]
6
Current, at 6.0 VOItS . . v v v o vt it it e et e e et e e 1.00 A
Current, at [2]
1
Current, at 6.0 VOItS . . v v v o vt it it e et e e et e e 1.00 A
Amplification Factor (Average) . . . .o v v i v ittt it ittt s iie e annnn
100
Amplification Factor (Average) . . . .o v v i v ittt it ittt s iie e annnn 100
Published value
2
2. Capacitance values are for a cold tube as measured in a special shielded fixture. When the cathode is heated to
the proper temperature, the grid-cathode capacitance will increase from the cold value by approximately
1 pF
the proper temperature, the grid-cathode capacitance will increase from the cold value by approximately 1 pF due
Published value [1]
3
3. Measured with one milliampere plate current and a plate voltage of 1 kvdc.
Published value [2]
1
3. Measured with one milliampere plate current and a plate voltage of 1 kvdc.
CW RF POWER AMPLIFIER OR OSCILLATOR OPERATING CONDITIONS FOR [1]
7815
CW RF POWER AMPLIFIER OR OSCILLATOR OPERATING CONDITIONS FOR 7815 AND 7815R IN
CW RF POWER AMPLIFIER OR OSCILLATOR OPERATING CONDITIONS FOR [2]
7815
CW RF POWER AMPLIFIER OR OSCILLATOR OPERATING CONDITIONS FOR 7815 AND 7815R IN
Frequency . . .. .. ... . v
500 MHz
Frequency . . .. .. ... . v 500 MHz
DC PLATE VOLTAGE [1]
2500 V
DC PLATE VOLTAGE .. ...... 2500 VOLTS Heater Voltage. . . .. ... ......... 6.0 V
DC PLATE VOLTAGE [2]
6 V
DC PLATE VOLTAGE .. ...... 2500 VOLTS Heater Voltage. . . .. ... ......... 6.0 V
DC GRID VOLTAGE . . . ... ... < [1]
150 V
DC GRID VOLTAGE . . . ... ... <150 VOLTS DCPlate Voltage . .. ............ 900 Vdc
DC GRID VOLTAGE . . . ... ... < [2]
900 V
DC GRID VOLTAGE . . . ... ... <150 VOLTS DCPlate Voltage . .. ............ 900 Vdc
INSTANTANEOUS PEAK GRID- DC Grid Voltage ( [1]
8
INSTANTANEOUS PEAK GRID- DC Grid Voltage (8pprox} . . . . .. .. .. -40 Vdc
INSTANTANEOUS PEAK GRID- DC Grid Voltage ( [2]
-40
INSTANTANEOUS PEAK GRID- DC Grid Voltage (8pprox} . . . . .. .. .. -40 Vdc
CATHODE VOLTAGE DC Cathode Current
90
CATHODE VOLTAGE DC Cathode Current . . ........... 90 mAdc
Grid negative to cathode [1]
-400 V
Grid negative to cathode . ... -400 VOLTS DC Grid Current . . ..o ov oot 25 mAdc
Grid negative to cathode [2]
25 V
Grid negative to cathode . ... -400 VOLTS DC Grid Current . . ..o ov oot 25 mAdc
DC PLATE CURRENT
100 mA
DC PLATE CURRENT . ....... 100 MILLIAMPERES setu ower Qutput. ...
DC GRID CURRENT
50 mA
DC GRID CURRENT ........ 50 MILLIAMPERES Grounded Grid CW Oscillator
Conduction and Convection Heater Voltage
5
Conduction and Convection Heater Voltage. . . .. .. ... . ... ... 5.0 V
( [1]
7815 W
(7815). o o e e e e 10 WATTS DC Plate Voltage . .. ............ 900 Vdc
( [2]
10 W
(7815). o o e e e e 10 WATTS DC Plate Voltage . .. ............ 900 Vdc
( [3]
900 W
(7815). o o e e e e 10 WATTS DC Plate Voltage . .. ............ 900 Vdc
Forced Air Cooling ( [1]
7815 W
Forced Air Cooling (7815R) . .. 100 WATTS DS Srid Voltage (approx) ... ...
Forced Air Cooling ( [2]
100 W
Forced Air Cooling (7815R) . .. 100 WATTS DS Srid Voltage (approx) ... ...
GRID DISSIPATION (Average} [1]
2 W
GRID DISSIPATION (Average} .. 2 WATTS DC Grid CUrrent « . oo oo ees 10 mAdc
GRID DISSIPATION (Average} [2]
10 W
GRID DISSIPATION (Average} .. 2 WATTS DC Grid CUrrent « . oo oo ees 10 mAdc
FREQUENCY [1]
2.5 GHz
FREQUENCY. . ............ 2.5 GHz Useful CW Power Qutput. . ......... 17 W
FREQUENCY [2]
17 GHz
FREQUENCY. . ............ 2.5 GHz Useful CW Power Qutput. . ......... 17 W
GRID PULSED OR PLATE PULSED AMPLIFIER OR Grid positive to cathode ,
250 V
GRID PULSED OR PLATE PULSED AMPLIFIER OR Grid positive to cathode , . ... ... 250 VOLTS
OSCILLATOR PULSE PLATE CURRENT
3 A
OSCILLATOR PULSE PLATE CURRENT ......... 3.0 AMPERES
ABSOLUTE MAXIMUM RATINGS PULSE GRID CURRENT
1.8 A
ABSOLUTE MAXIMUM RATINGS PULSE GRID CURRENT . .. ... .... 1.8 AMPERES
DC PLATE VOLTAGE Conduction and Convection { [1]
7815 W
DC PLATE VOLTAGE Conduction and Convection {7815) . 10 WATTS
DC PLATE VOLTAGE Conduction and Convection { [2]
10 W
DC PLATE VOLTAGE Conduction and Convection {7815) . 10 WATTS
(PLATE PULSED) « .« oo oo e onn s [1]
3500 V
(PLATE PULSED) « .« oo oo e onn s 3500 VOLTS GRID DISSIPATION (Average) . .. .. 2 WATTS
(PLATE PULSED) « .« oo oo e onn s [2]
2 V
(PLATE PULSED) « .« oo oo e onn s 3500 VOLTS GRID DISSIPATION (Average) . .. .. 2 WATTS
DC GRID VOLTAGE . .« « oo v et [1]
-150 V
DC GRID VOLTAGE . .« « oo v et -150 VOLTS FREQUENCY . o v oo o e e e e e e 3.0 GHz
DC GRID VOLTAGE . .« « oo v et [2]
3 V
DC GRID VOLTAGE . .« « oo v et -150 VOLTS FREQUENCY . o v oo o e e e e e e 3.0 GHz
INSTANTANEOUS PEAK GRID- PULSE DURATIONY
6
INSTANTANEOUS PEAK GRID- PULSE DURATIONY . .. .. .... ... 6 us
Grid negative to cathode [1]
700 V
Grid negative to cathode . ....... 700 VOLTS DUTY FACTORL . ..o -0033
Grid negative to cathode [2]
-33 V
Grid negative to cathode . ....... 700 VOLTS DUTY FACTORL . ..o -0033
OPERATING CONDITIONS FOR [1]
7815
OPERATING CONDITIONS FOR 7815 AND 7815R IN Plate Pulsed Oscillator
OPERATING CONDITIONS FOR [2]
7815
OPERATING CONDITIONS FOR 7815 AND 7815R IN Plate Pulsed Oscillator
REPRESENTATIVE APPLICATION FreQUENCY . v v« v v v et i v e et e e e e e e s
3 GHz
REPRESENTATIVE APPLICATION FreQUENCY . v v« v v v et i v e et e e e e e e s 3.0 GHz
Heater Voltage
5.8
Heater Voltage . . . .. ............. 5.8 V
Grid Pulsed Amplifier Peak Plate Voltage
3500
Grid Pulsed Amplifier Peak Plate Voltage . ... ........... 3500 v
Frequency [1]
1.1 GHz
Frequency . ........ .. 1.1 GHz Peak Video Plate Current . ., ... ...... 3.0 a
Frequency [2]
3 GHz
Frequency . ........ .. 1.1 GHz Peak Video Plate Current . ., ... ...... 3.0 a
Heater Voltage
6
Heater Voltage . . .. .............. 6.0 V
Peak Video Grid Current
1.8
Peak Video Grid Current. . ... ....... 1.8 a
DC Plate Voltage
2200
DC Plate Voltage . ............... 2200 Vvdc
DCGridVoltage [1]
-45
DCGridVoltage . . . .............. -45 Vdc Useful Power Output (approx) .. ...... 1600 w
DCGridVoltage [2]
1600
DCGridVoltage . . . .............. -45 Vdc Useful Power Output (approx) .. ...... 1600 w
Peak Video Plate Current [1]
1.9
Peak Video Plate Current . .. ........ 1.9 a Pulse Duration . . .. .............. 3 us
Peak Video Plate Current [2]
3
Peak Video Plate Current . .. ........ 1.9 a Pulse Duration . . .. .............. 3 us
Peak Video Grid Current [1]
1.1
Peak Video Grid Current . . . . ... ..... 1.1 a Duty Factor . . .. ... ... .......... .0025
Peak Video Grid Current [2]
25
Peak Video Grid Current . . . . ... ..... 1.1 a Duty Factor . . .. ... ... .......... .0025

Data set 02

1965 Eimac Tube Manual

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Heater Current Range
900 mA to 1.05 A

Other

Cathode Heating Time
60 s
Grid-Cathode Capacitance
6.3 pF
Grid-Plate Capacitance
1.98 pF
Plate-Cathode Capacitance Maximum
0.035 pF
Frequency Maximum
3 GHz
Pulse Plate Voltage Maximum
3500 V
Pulse Cathode Current Maximum
4.8 A
DC Plate Current Maximum
100 mA
Pulse Duration Maximum
6 us
Duty Factor Maximum
0.0033

Data set 03

1975 Eimac Tube Manual

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Heater Current Range
900 mA to 1.05 A
Cathode Heating Time
60 s

Capacitance

Input Capacitance
6.3 pF
Output Capacitance
0.035 pF
Grid-Plate Capacitance
1.98 pF

Other

Frequency Maximum
3 GHz
Pulse Plate Voltage Maximum
3500 V
PlatePulsed
Pulse Current Maximum
4.8 A
PulseModulator
Pulse Duration Maximum
6 us
Duty Factor Maximum
0.0033
Pulse Cathode Current Maximum
4.8 A
DC Plate Current Maximum
100 mA

Data set 04

1976 Eimac Tube Manual

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Heater Current Range
900 mA to 1.05 A
Cathode Heating Time
60 s

Capacitance

Input Capacitance
6.3 pF
Output Capacitance
0.035 pF
Grid-Plate Capacitance
1.98 pF

Other

Frequency Maximum
3 GHz
Pulse Plate Voltage Maximum
3500 V
PlatePulsed
Pulse Current Maximum
4.8 A
PulseModulator
Pulse Duration Maximum
6 us
Duty Factor Maximum
0.0033
Pulse Cathode Current Maximum
4.8 A
DC Plate Current Maximum
100 mA