Hitachi 2M251 is fixed frequency continuous wave magnetron intended for use in industrial microwave heating applications.
The useful RF power output at 2455 MHz band is approx. 3.0 kW into a matched load.
| No. | Item | Symbol | Min. | Max. | Unit |
|---|---|---|---|---|---|
| 1 | Filament surge current | - | - | 100 | Aac |
| 2 | Filament voltage (pre-heating) | Ef | 3.8 | 4.2 | Vac |
| 3 | Filament voltage (operation) | Ef | 2.0 | 2.4 | Vac |
| 4 | Cathode pre-heating time | tk | 8 | - | s |
| 5 | Peak anode voltage | ebm | - | 5.5 | kVp |
| 6 | Peak anode current | ibm | - | 2.1 | Ap |
| 7 | Average anode current | Ib | - | 900 | mAdc |
| 8 | Average input power | Pi | - | 4.7 | kW |
| 9 | Load VSWR | σL | - | 3 | - |
| 10 | Anode temperature | Tp | - | 160 | °C |
| No. | Item | Test conditions | Symbol | Typ. | Min. | Max. | Unit |
|---|---|---|---|---|---|---|---|
| 1 | Filament current (pre-heating) | tk = 120 s (Min.) | If | 23.5 | 22.0 | 25.0 | Aac |
| 2 | Peak anode voltage | - | ebm | 5.20 | 5.00 | 5.40 | kVp |
| 3 | Average power output | Ib = 840 mA | Po | 3000 | 2800 | - | W |
| 4 | Frequency (matched load) | Ib = 840 mA | fo | 2455 | 2440 | 2470 | MHz |
| 5 | Breakdown voltage | Ef = 0, ebm = 0 | Et | - | 10.0 | - | kVdc |
| No. | Item | Test conditions |
|---|---|---|
| 1 | Power supply | Single phase, full-wave rectifier without filter |
| 2 | Filament voltage | Ef = 4.0 V (pre-heating), Ef = 2.2 V [operation (Ib = 840 mAdc)] |
| 3 | Average anode current | Ib = 840 mAdc |
| 4 | Load VSWR | σL = 1.1 or less |
| 5 | Cooling air flow | Q = 2.0 m3/min or greater |
Please choose the type of outline from inline or not inline.
Weight : approx. 3.1 kg
2M251 Performance Chart
2M251 Filament Voltage Reduction Chart
