Data set 01
1962 Eimac
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Maximum plate voltage
1500 V
Maximum plate/cathode current
400 mA
Maximum plate dissipation
400 W
Maximum grid dissipation
5 W
Power - Triode (over 1000V 100W) ·Triode
3CX400U7
Very high-mu UHF power triode designed specifically for service above 200 MHz. Its compact construction and 400 W plate-dissipation rating suit professional high-frequency RF power-amplifier applications.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 6.3 V / 3 A
Description
High-mu UHF power triode designed for service above 200 MHz.
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
- 6.3 V
- Nominal heater current
- 3 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
- 240
- Max plate voltage
- 1500 V
- Max plate dissipation
- 400 W
- Max grid dissipation
- 5 W
- Max cathode current
- 400 mA
Maximum ratings promoted from the printed service-rating tables; typical operating values are preserved 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.