PET1185J2F TRIODE

Drop-in equivalent of YD1212 / BW1185J2F / BW1185J2 / BW1185
Water Cooled Triode For high power HF / RF Industrial Heating applications like HF Tube Welders, Textile RF Dryers, Food RF Dryers and Dielectric Heaters. 
  • Power Triode Tube Valve
  • Output Power: 240 kW
  • Anode voltage: 16.8 kV max
  • Anode dissipation: 120 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]
It is supplied with a removable jacket for easy cleaning and maintenance.

Superior quality at a lower price with unmatched warranty of 52 weeks with no restriction on the number of hours of operation.

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. We offer a 52 weeks warranty with no restriction on number of hours of operation.

Download Data Sheet of PET1185J2F / YD1212 / BW1185J2F / BW1185J2 / BW1185

The BW1185J2F / YD1212 is a water cooled power triode of coaxial ceramic-metal construction. It is intended primarily for industrial RF heating machines. It has an integral water jacket.
 
Electrical Characteristics of BW1185J2F / YD1212
Filament            .           .           .           .           .           . Thoriated Tungsten
Filament voltage (see note 1)     .           .           .       12.6 V
Filament current.           .           .           .           .          380 A
Surge filament current (peak) (See note 2)          .   2000 A max
Filament cold resistance .           .           .           .       3.6 mΩ
Peak usable cathode current      .           .           .      175 A
Amplification factor (Va = 14 kV, la = 10 A)           .   40
Mutual conductance (Va = 14 kV, la = 10 A).       .    190 mA/V
Inter – electrode capacitances:
Grid to anode    .           .           .           .           .          60 pF
Grid to filament             .           .           .           .         185 pF
Anode to filament          .           .           .           .        3.0 pF
 
Mechanical Characteristics of BW1185J2F / YD1212
Overall length (Excluding leads) .           .           .     446.00mm (17.560 inches) max
Overall diameter            .           .           .           .        190.5mm (7.500 inches) max
Net weight         .           .           .           .           .         15.6 kg (34.4 pounds) approx
Mounting position (see note 3)    .           .           .    Vertical, anode up or down
 
Accessories of BW1185J2F / YD1212
Water coupling, 2 supplied with tube       .           .  MA709B
Water union, 25 mm hose (optional)       .           .   MA2654A
Filament connector (with lead)    .           .           .    MA475A
Filament connector (without lead)           .           .  MA291C
Filament/cathode connector (with lead)   .           MA475B
Filament/cathode connector (without lead)         MA291D
 
For frequencies above 2 MHz, cathode connector MA291F should be used in conjunction with a strip connection to provide a low inductance cathode return
 
Grid connector  .           .           .           .           .       MA342
Thermal fuse    .           .           .           .           .        MA85G
 
The tightening torque applied to the clamping screw must be between the limits of 20 lb.in (0.231 kg.m) min, 35 lb.in (0.404 kg.m) max.
 
Cooling
The BW1185J2F / YD1212 has an integral water jacket. The water cooling requirements are given in the following table.

Anode                                                  minimum rate of flow
plus grid                       inlet                  of water                        inlet               Outlet
dissipation              temperature                                               pressure      temperature
(kW)                             (⁰C)                   l. /min           imp.gal/min           (atm)                 (o C)

120                               20                     60                     13.2                  0.7                    50
120                               50                     90                     19.8                  1.3                    70
80                                 20                     34                     7.5                    0.3                    55
80                                 50                     54                     11.9                  0.55                  72
40                                 20                     15                     3.3                    0.07                  62
40                                 50                     24                     5.3                    0.13                  76

The inlet water temperature must never exceed 50 ⁰C. The water pressure must never exceed 600 kPa(87 lb/in2).
 
The temperature of the seals and envelope must not exceed 200 ⁰C. Cooling of the seals by low velocity air flow or water cooled filament connectors is required.
 
 Radio Frequency Oscillator For Industrial Service
(Class C conditions, one tube)
Maximum Ratings (Absolute values) of BW1185J2F / YD1212
Frequency         .           .           .           30     MHz
Anode voltage   .           .           .           16.8   kV max
Anode input power        .           .           375    kW max
Anode dissipation         .           .           120     kW max
Grid voltage (negative value)      .           2.0     kV max
Grid current:
On load .           .           .           7.0     A max
Off load .           .           .           8.5     A max
Grid dissipation .           .           .           3.0     kW max
Grid circuit resistance    .           .           10      kΩ max
Cathode current .           .           .           31      A max
 
Typical Operating Conditions of BW1185J2F / YD1212
Frequency         .           .           .           30         30         30         MHz
Anode voltage   .           .           .           10         12         14         kV
Anode current    .           .           .           23.6      24.7      23.5      A
Anode dissipation         .           .           56.6      67.4      81.5      kW
Grid voltage      .           .           .           -580      -695      -810      V
Grid resistor      .           .           .           87         108       135       Ω
Grid current, on load      .           .           6.7        6.4        6.0        A
Grid current, off load     .           .           8.4        8.0        8.0        A
Grid dissipation .           .           .           2.6        2.6        2.6        kW
Feedback ratio  .           .           .           9.1        10.5      11         %
Drive power      .           .           .           6.4        7.1        7.5        kW
Output power    .           .           .           179.4    229.3    247.5    kW
Efficiency         .           .           .           76.0      77.3      75.2      %
Oscillator output power (See note 5).      173.0    222.2    240       kW
 
NOTES
  1. Temporary fluctuations up to +5% or -10% in filament voltage are permissible.
  2. The filament current of BW1185J2F / YD1212 must not exceed 2000 A, even momentarily, at any time.
  3. If the tube is mounted with the anode uppermost, the water inlet and outlet connections should be reversed (see outline).
  4. the feedback ratio is defined as    Vg(pk)  X  100
                                                                      Va(pk)
Where Vg(pk) = peak r.f. grid voltage in volts
  And Va(pk) = peak r.f. anode voltage in volts
  1. Oscillator output power     =          Pout - Pdrive
Where Pout = output power of tube to anode circuit
And Pdrive = drive power fed back to grid circuit