Power - Triode (over 1000V 100W) ·Triode
Very-high-power triode for high-voltage pulse-modulator and switching service, rated to 180 kV and 130 A cathode current.
XD55 is a high-power triode designed for high-voltage pulse modulator or switching service.
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
Published ratings and characteristics promoted where directly established; additional values retained as parameters.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Heater/Filament Current
350 A
Published datasheet value
anode to cathode
25 pF
Published datasheet value
Amplification Factor
50
Published datasheet value
Data set 02
Published operating points and test conditions from this source.
Amplification factor
50
Heater/filament voltage
10 V
Heater/filament current
350 A
Estimated tube drop
30 kV
Maximum plate/anode voltage
180000 V
Maximum plate/anode dissipation
25000 W
Peak cathode current
173 A
Peak anode current
130 A
Average anode current
400 mA
Maximum duty factor
0.003
Maximum pulse width
12 us
Anode-cathode capacitance
25 pF
Anode-grid capacitance
2 pF
Cathode-grid capacitance
300 pF