PET1608J2F

Drop-in equivalent of BW1608J2F (E2V)
Water Cooled Triode For Industrial RF Heating

Power Triode Tube Valve
Output Power: 118 kW
Anode voltage: 13 kV max
Anode dissipation: 50 kW max
Frequency: 30 MHz max
Warranty: 12 months irrespective of number of hours in operation
Condition: Brand New
Price: Please call +91-9815309603 or email: [email protected]

Manufactured in India, in a world-class facility equipped with high quality machinery, materials and components sourced from reputed suppliers in America, Europe and Japan.

Data Sheet of PET1608J2F

Quote

PET1608J2F (equivalent of BW1608J2F) is power triode of coaxial ceramic-metal construction. It is intended primarily for industrial RF heating machines. It comes with a removable water jacket. Anode is water cooled.

Electrical characteristics of PET1608J2F (equivalent of BW1608J2F)
Filament            Thoriated tungsten
Filament voltage (see note 1)     12       Volts
Filament Current            178     Amps
Surge filament current (peak) (See note 2)          890      A max
Filament cold resistance               8.0     mΩ
Peak usable cathode current         70
Amp Amplification factor (Va = 10 kV, la = 5.0 A)   40
Mutual conductance (Va = 10 kV, la = 5.0 A)   80            mA/V
Inter-electrode capacitances:
Grid to anode        47     pF
Grid to filament     126   pF
Anode to filament    2.0 pF

Mechanical characteristics of PET1608J2F (equivalent of BW1608J2F)
Overall dimensions            See outline Drawing
Net weight:                    12 kg approx, 26.5 pounds approx
Mounting position         Vertical, either way up

Accessories
Water Coupling, supplied      PA709B
Thermal fuse        PA85G
Cathode Connector   PA830

For frequencies above 2 MHz, PA830 should be used in conjunction with a strip connection to provide a low inductance cathode return.

Cooling
PET1608J2F (equivalent of BW1608J2F) has removable water jacket. Water cooling requirements are as follows:
Anode plus grid Inlet                          Minimum rate of                                        Outlet
Dissipation                   temperature       water flow                     Pressure drop   temperature
(kW)                             (°C)                   (l/min)                           (bar)                             (°C)
50                                 20                     30                                 0.27                              45
50                                 50                     73                                 1.38                              60
30                                 20                     20                                 0.10                              43
30                                 50                     45                                 0.72                              60
15                                 20                     10                                 0.07                              45
15                                 50                     24                                 0.15                              60

The inlet water temperature must never exceed 50 °C. The pressure in the water jacket must not exceed 6 bars.

The temperature of the seals and envelope must not exceed 200 °C. Cooling of the seals by low velocity air flow is required.

Radio Frequency Oscillator For Industrial Service
(Class C conditions, one tube)
Maximum Ratings (Absolute Values)
Frequency             .   30      MHz
Anode voltage     .   13    kV max
Anode input power           .   150   kW max
Anode dissipation            .   50       kW
Grid voltage (negative value)         .   2.0    kV max
Grid Current
            On load     .   3.0    A max
            Off load                .   3.8    A max
Grid dissipation     .   2.0   kW max
Grid Circuit resistance       .   10    kΩ max
Cathode current     .   16     A max

Typical Operating Conditions (Example 1)
Frequency         30          MHz
Anode Voltage 8.0       kV
Anode current   8.0       A
Anode dissipation 12.2 kW
Grid Voltage     -500     V
Grid resistor      333      Ω
Grid current, on load      1.5   A
Grid Current, off load    2.4   A
Grid dissipation 592      W
Feedback ratio (See note 4)       12.1      %
Drive Power      1.4       kW
Output Power    51.9     kW
Efficiency         81.0     %
Oscillator output power
(See note 5)      50.5                 80.5                  117.8    kW

Typical Operating Conditions (Example 2)
Frequency         30         MHz
Anode Voltage 10        kV
Anode current   10        A
Anode dissipation         17.3     kW
Grid Voltage     -630     V
Grid resistor      315      Ω
Grid current, on load      2.0       A
Grid Current, off load    3.3       A
Grid dissipation 947      W
Feedback ratio (See note 4)       11.8      %
Drive Power      2.2       kW
Output Power    82.7     kW
Efficiency         82.7      %
Oscillator output power (See note 5)       80.5      kW

Typical Operating Conditions (Example 3)
Frequency         30        MHz
Anode Voltage 12        kV
Anode current   12        A
Anode dissipation         22.6     kW
Grid Voltage     -800      V
Grid resistor      296      Ω
Grid current, on load      2.7       A
Grid Current, off load    3.5        A
Grid dissipation 1500    W
Feedback ratio (See note 4)       12         %
Drive Power      3.6    kW
Output Power    121.4   kW
Efficiency         84.3      %
Oscillator output power (See note 5)       117.8    kW

Notes

Temporary fluctuations up to + 5% or –10% in filament voltage are permissible.
The filament current must not exceed 890 A, even momentarily, at any time.
If the tube is mounted with the anode uppermost, the water inlet and outlet connections should be reversed.
The feedback ratio is defined as Vg (pk)/Va(pk) X 100 where Vg(pk) = peak r.f. grid voltage in volts and Va(pk) = peak r.f. anode voltage in volts.
Oscillator output power = P out – P drive where Pout= output power of tube to anode circuit and P drive = drive power fed back to grid circuit.

Typical Constant Current Characteristics of PET1608J2F (equivalent of BW1608J2F)