3CV1500A7

Water-cooled ceramic-metal industrial power triode for high-power RF generation, amplification, or modulation. Its manufacturer ratings emphasize continuous transmitting duty with high plate dissipation and substantial power handling.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 5 V / 30 A

Description

The 3CV1500A7 is an integral-boiler, ceramic/metal, vapor cooled zero- bias triode, intended for Class AB2 linear amplifier service in either grid driven or cathode driven configuration. Except for the anode dissipation

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: 5 V
Nominal heater current: 30 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

Amplification factor: 200
Max plate voltage: 3500 V
Max plate dissipation: 1500 W
Max grid dissipation: 45 W

Single triode section; promoted values mapped from printed General Characteristics and Maximum Ratings headings.

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

Characteristics

YS 8 8060 00000000000000000000000000¢ 5.0:+025 V
8 V
GeneralCharacteristics | YS 8 8060 00000000000000000000000000¢ 5.0:+025 V
Current, at 5.0 volts
5 volts
GeneralCharacteristics | Current, at 5.0 volts . ...t i vttt i it it anenas 30 A
Amplification Factor (average)
200
GeneralCharacteristics | Amplification Factor (average) .. ..o vvvvveoonnens 200
05 32.0 pF
5 pF
GeneralCharacteristics | 05 32.0 pF
(6 L1 S T I I R R R 0.15 pF
6 pF
GeneralCharacteristics | (6 L1 S T I I R R R 0.15 pF
) 5 050008 a 00000 a00800063080000003053800053a300800000000 14.0 pF
5 a
GeneralCharacteristics | ) 5 050008 a 00000 a00800063080000003053800053a300800000000 14.0 pF
(05 1 R S S S 0 G B S S S S B S S S S S s 32.0 pF
5 pF
GeneralCharacteristics | (05 1 R S S S 0 G B S S S S B S S S S S s 32.0 pF
0 14.0 pF
0 pF
GeneralCharacteristics | 0 14.0 pF
] 0.15 pF
0.15 pF
GeneralCharacteristics | ] 0.15 pF
CW ittt ittt ittt ses st snsoonesssasoonasnsassssnons 220 MHz
220 MHz
GeneralCharacteristics | CW ittt ittt ittt ses st snsoonesssasoonasnsassssnons 220 MHz
2. Capacitance values are for a cold tube, as measured in a shielded fixture in accordance with Electronic Industries
2 a
GeneralCharacteristics | 2. Capacitance values are for a cold tube, as measured in a shielded fixture in accordance with Electronic Industries

Other

N R i L A R R N R R R 2.38 1b; 1.08 kg
2.38 A
| N R i L A R R N R R R 2.38 1b; 1.08 kg
Ceramic/metal SEAlS « v v v v vttt vttt vttt ensestoononnsssarsanansoes 250°C
250 v
| Ceramic/metal SEAlS « v v v v vttt vttt vttt ensestoononnsssarsanansoes 250°C
Recommended Socket. . « v v v v vttt vttt i s sttt e st e EIMAC SK-861
861 v
| Recommended Socket. . « v v v v vttt vttt i s sttt e st e EIMAC SK-861
DC PLATEVOLTAGE
3500 VOLTS
MaximumRatings | DC PLATEVOLTAGE ............ 3500 VOLTS Zero-Signal Plate Current . . . . 238 305 129 mAdc
DCPLATE CURRENT
1 AMPERE
MaximumRatings | DCPLATE CURRENT ............ 1.0 AMPERE Single Tone Plate Current . . . . 875 800 857 mAdc
PLATE DISSIPATION
1500 WATTS
MaximumRatings | PLATE DISSIPATION ............ 1500 WATTS Two-Tone Plate Current .. ... 600 585 590 mAdc
GRID DISSIPATION
45 WATTS
MaximumRatings | GRID DISSIPATION . ........... 45 WATTS Single-Tone Grid Current3. . . . 230 205 225 mAdc
Peak rf Drive Voltage3
80 v
MaximumRatings | Peak rf Drive Voltage3. ... .. 80 74 110 v
Peak Driving Power
80 w
MaximumRatings | Peak Driving Power . . ... ... 80 60 100 w
1. Adjust to specified zero-signal dc plate current. Plate Dissipation
1 W
MaximumRatings | 1. Adjust to specified zero-signal dc plate current. Plate Dissipation ... ...... 800 830 940 W
Usefu! Output Power
940 W
MaximumRatings | Usefu! Output Power . . ..... 940 1170 2060 W
DC PLATE VOLTAGE!
3500 VOLTS
MaximumRatings | DC PLATE VOLTAGE!. . ... ....... 3500 VOLTS Max. Signal Plate Current ., . . ..... 2.0 2.0 Adc
DC PLATECURRENT
1 AMPERE
MaximumRatings | DC PLATECURRENT ............ 1.0 AMPERE Max. Signal Grid Current2. .. .. ... 590 480 mAdc
PLATE DISSIPATION
1500 WATTS
MaximumRatings | PLATE DISSIPATION . ........... 1500 WATTS Peak af Grid Voltage3. . . ........ 95 90 v
GRID DISSIPATION
45 WATTS
MaximumRatings | GRID DISSIPATION .. .......... 45 WATTS Peak Driving Powerd . . . ... ... .. 25 44 w
Plate Input Power
4000 W
MaximumRatings | Plate Input Power . ............ 4000 5000 W
1. See zero-bias operation in Application Section. Max. Signal Plate Dissipation
1 W
MaximumRatings | 1. See zero-bias operation in Application Section. Max. Signal Plate Dissipation . .. .. 1650 1900 W
2. Approximate value. Plate Output Power
2 W
MaximumRatings | 2. Approximate value. Plate Output Power . . .......... 2350 3100 W
Heater: Current at 5.0 volts
5 volts
NOTE: TYPICAL OPERATION data are obtained by measurement or calculation from published characteristic curves. | Heater: Current at 5.0 volts ..... et eeee... 280 33.0A
cetieeaaes 29.0 350 pF
29 pF
NOTE: TYPICAL OPERATION data are obtained by measurement or calculation from published characteristic curves. | cetieeaaes 29.0 350 pF
751 ceersaees. 120 16.0 pF
751 pF
NOTE: TYPICAL OPERATION data are obtained by measurement or calculation from published characteristic curves. | 751 ceersaees. 120 16.0 pF
0.2 pF
0.2 pF
NOTE: TYPICAL OPERATION data are obtained by measurement or calculation from published characteristic curves. | 0.2 pF
1. Capacitance values are for a cold tube as measured in a special shielded fixture in accordance with Electronic In
1 a
NOTE: TYPICAL OPERATION data are obtained by measurement or calculation from published characteristic curves. | 1. Capacitance values are for a cold tube as measured in a special shielded fixture in accordance with Electronic In-
anode surface, to be converted into steam and 2500 volts since plate dissipation may be exceed
2500 volts
| anode surface, to be converted into steam and 2500 volts since plate dissipation may be exceed-
keeps the anode surface at approximately 100°C. as mentioned above under ‘‘Class-C Operation”’
100 °C
| keeps the anode surface at approximately 100°C. as mentioned above under ‘‘Class-C Operation”’
the correct level, as shown on the outline drawing is, of course, permissible up to 3500 volts where
3500 volts
| the correct level, as shown on the outline drawing is, of course, permissible up to 3500 volts where
level. A condenser unit is used to convert the 1500 watts attainable through vapor cooling pro
1500 A
| level. A condenser unit is used to convert the 1500 watts attainable through vapor cooling pro-
electrode voltages, including the filament, and column resistance is above 100,000 ohms per
100000 ohms
| electrode voltages, including the filament, and column resistance is above 100,000 ohms per
may be removed simultaneously with the removal 1000 supply volts. It is essential that high purity
1000 volts
| may be removed simultaneously with the removal 1000 supply volts. It is essential that high purity
ionized water will have a resistance of 1 to 2
1 a
| ionized water will have a resistance of 1 to 2
resistivity falls to 50,000 ohms cm3
50000 ohms
| resistivity falls to 50,000 ohms cm3.
3CV1500A7 is 5.0 volts. Filament voltage, as
3 volts
| 3CV1500A7 is 5.0 volts. Filament voltage, as
lowed to deviate from 5.0 volts by more than plus
5 volts
| lowed to deviate from 5.0 volts by more than plus
tissue is dependent on frequency. Under 30 MHz, factors being equal, controlling internal tube
30 MHz
| tissue is dependent on frequency. Under 30 MHz, factors being equal, controlling internal tube
quencies as low as the 13 and 27 MHz bands. cordance with Standard RS-191
13 MHz
| quencies as low as the 13 and 27 MHz bands. cordance with Standard RS-191.
W|-- [-- lo03mB|[-- |
3 W
| W|-- [-- lo03mB|[-- | -- | 953

Data set 02

1965 Eimac Tube Manual

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

bias triode, intended for Class A8
2
bias triode, intended for Class A82 linear amplifier service in either grid
Voltage............I [1]
5 V
Voltage............I.......... 5.0 ± 0.25 V
Voltage............I [2]
0.25 V
Voltage............I.......... 5.0 ± 0.25 V
Current, at [1]
5 A
Current, at 5.0 volts ............... 30A
Current, at [2]
30 A
Current, at 5.0 volts ............... 30A
Direct Interelectrode Capacitances (grounded filament)
2 pF
Direct Interelectrode Capacitances (grounded filament) 2
Direct Interelectrode Capacitances (grounded grid)
2 pF
Direct Interelectrode Capacitances (grounded grid) 2
Published value
2 pF
2. Capacitance values are for a cold tube, as measured in a shielded fixture in accordance with Electronic Industries
Ceramic/metal seals
250
Ceramic/metal seals ........... ....... 250OC
RADIO FREQUENCY LINEAR AMPLIFIER TYPICAL OPERATION (Frequencies to
30 MHz
RADIO FREQUENCY LINEAR AMPLIFIER TYPICAL OPERATION (Frequencies to 30 MHz)
CATHODE DRIVEN Class A8 [1]
2
CATHODE DRIVEN Class A82 Class A82 Peak Envelope or Modulation Crest Conditions
CATHODE DRIVEN Class A8 [2]
2
CATHODE DRIVEN Class A82 Class A82 Peak Envelope or Modulation Crest Conditions
DC PLATE VOLTAGE [1]
3500 V
DC PLATE VOLTAGE 3500 VOLTS Zero-Signal Plate Current . 238
DC PLATE VOLTAGE [2]
238 V
DC PLATE VOLTAGE 3500 VOLTS Zero-Signal Plate Current . 238
DC PLATE CUF}PIENT [1]
1 A
DC PLATE CUF}PIENT 1.0 AMPERE Single Tone plate Current . 875
DC PLATE CUF}PIENT [2]
875 A
DC PLATE CUF}PIENT 1.0 AMPERE Single Tone plate Current . 875
PLATE DISSIPATION [1]
1500 A
PLATE DISSIPATION 1500 WATTS Two-Tone Plate Current . . 600
PLATE DISSIPATION [2]
600 A
PLATE DISSIPATION 1500 WATTS Two-Tone Plate Current . . 600
GRID DISSIPATION [1]
45 A
GRID DISSIPATION 45 WATTS Single-Tone Grid Current3. 230
GRID DISSIPATION [2]
230 A
GRID DISSIPATION 45 WATTS Single-Tone Grid Current3. 230
Two-Tone Grid Current3
130 A
Two-Tone Grid Current3. . . 130
Peak rf Drive Voltage3
80 V
Peak rf Drive Voltage3. . . 80
Peak Driving Power
80 W
Peak Driving Power ..... 80
Published value [1]
1 A
1. Adjust to specif ied zero-signal dc plate current. Plate Dissipation ...... 800
Published value [2]
800 A
1. Adjust to specif ied zero-signal dc plate current. Plate Dissipation ...... 800
Useful Output Power ...,
940 W
Useful Output Power ..., 940
MODULATOR Class A8
2
MODULATOR Class A82, Grid Driven(Sinusoidal Wave)
DC PLATE VOLTAGE1
3500 V
DC PLATE VOLTAGE1 . 3500 VOLTS Max. Signal Plate Current .....
DC PLATE CURf]ENT
1 mA
DC PLATE CURf]ENT . 1.0 AMPEFIE Max. Signal Grid Current2 .....
PLATE DISSIPATION
1500 W
PLATE DISSIPATION . 1500 WATTS Peak af Grid Voltaga ........
GFuD DISSIPATION
45 W
GFuD DISSIPATION . 45 WATTS Peak Driving Power4 ........
Published value
1 W
1. See zero-bias operation in Application Section. Max. Signal Plate Dissipation . .
Published value
4 W
4. Nominal drive power is one-half peak power.
(plate to plate) [1]
1900
(plate to plate) ........... 1900 2580 a a
(plate to plate) [2]
2580
(plate to plate) ........... 1900 2580 a a
Heater: Current at [1]
5 A
Heater: Current at 5.0 volts .................. 28.0 33.0 A
Heater: Current at [2]
28 A
Heater: Current at 5.0 volts .................. 28.0 33.0 A
Heater: Current at [3]
33 A
Heater: Current at 5.0 volts .................. 28.0 33.0 A
Cathode Warmup Time
5
Cathode Warmup Time ...................... 5 --- sec®
Interelectrode Capacitance
1 pF
Interelectrode Capacitance 1 (grounded grid connection)
Published value
1 pF
1. Capacitance values are for a cold tube as measured in a special shielded fixture in accordance with Electronic ln-
the boiler. The use of the EIMAC socket SK
861
the boiler. The use of the EIMAC socket SK-861 C amplifiers by employing only grid leak bias. If
anode surface, to be converted into steam and
2500 W
anode surface, to be converted into steam and 2500 volts since plate dissipation may be exceed-
keeps the anode surface at approximately
100
keeps the anode surface at approximately 100°C. as mentioned above under "Class-C Operation"
is not available at plate voltages above
2500 V
is not available at plate voltages above 2500
level. A condenser unit is used to convert the
1500
level. A condenser unit is used to convert the 1500 watts attainable through vapor cooling pro-
column resistance is above
100000
column resistance is above 100,000 ohms per
ionized water will have a resistance of [1]
1
ionized water will have a resistance of 1 to 2
ionized water will have a resistance of [2]
2
ionized water will have a resistance of 1 to 2
Published value [1]
3 V
3CV1500A7 is 5.0 volts. Filament voltage, as
Published value [2]
500 V
3CV1500A7 is 5.0 volts. Filament voltage, as
Published value [3]
5 V
3CV1500A7 is 5.0 volts. Filament voltage, as