PET1608J2F TRIODE
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Drop-in equivalent of BW1608J2F (E2V)
Water Cooled Triode For Industrial RF Heating
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. |
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Data Sheet of BW1608J2f / PET1608J2F
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. BW1608J2F has a water cooled Anode.
Electrical characteristics 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 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
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
Electrical characteristics 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 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
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 of BW1608J2F must not exceed 890 A, even momentarily, at any time.
- If BW1608J2F 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.