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CV2487 / 4X250B tetrode

Size
 This valve measures 64x42mm overall and has a special 9-pin base (the spigot is pin 9)

Heater voltage6V
Heater current2.6A
Max grid voltage-250V
Max control grid dissipation2W
Max screen dissipation12W
Max anode temperature250°C
Max base seal temperature175°C
Max frequency500MHz
Min cathode heating time30s
Class AB audio
Max anode voltage2kV
Max anode dissipation250W
Max anode input500W
Max anode current250mA
Max screen voltage400V
Class C telephony
Max anode voltage1.5kV
Max anode dissipation165W
Max anode input300W
Max anode current200mA
Max screen voltage300V
Class C telegraphy
Max anode voltage2kV
Max anode dissipation250W
Max anode input500W
Max anode current250mA
Max screen voltage300V
Capacitances
Cin (nom)15.7pF
Cout (nom)4.5pF
Ca-g1 (max)0.06pF


PinFunction
1Screen grid
2Cathode
3Heater
4Cathode
5i/c
6Cathode
7Heater
8Cathode
SpigotControl grid
Main bodyAnode

CV2487 / 4X250B