Products

Magnetrons for Microwave Oven

Products

[Image] Products

[Image] 2M231
2M231

[Image] 2M240
2M240

[Image] 2M303
2M303

Typical Operation

  Filament
Voltage
(V)		 Filament
Current
(A)		 Average
Anode
Current
(mA)		 Peak
Anode
Voltage
(kV)		 Output
Power
(W)		 Frequency
(MHz)
2M229 3.3 10.5 300 4.0 850 2460
2M231 3.5 11.0 200 3.7 520 2460
2M240 3.3 10.5 300 4.0 850 2460
2M248 3.15 10.0 330 4.35 1030 2460
2M253 3.3 10.5 300 4.0 860 2460
2M300 3.5 12.0 200 3.85 550 2465
2M301 3.3 11.5 300 4.1 900 2465
2M302 3.3 11.5 300 4.2 920 2465
2M303 3.15 11.0 330 4.4 1080 2465

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Outline

[Image] Outline

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Option

[Image] Option

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Note

Note1

The filament transformer design center must be the following voltage for normal line voltage.

  • 2M231, 2M300 : 3.5 ± 0.1 V
  • 2M229, 2M240, 2M253, 2M301, 2M302 : 3.3 ± 0.1 V
  • 2M248, 2M303 : 3.15 ± 0.1 V

Note2

The load VSWR larger than 4 may be allowable unless it is locked in such a condition.
It is required to consult with Toshiba Hokuto for the best design of peak anode current and impedance even if the VSWR is either less or larger than 4.

Note3

See outline drawing for measuring point.
Maximum anode temperature for normal condition (with load in the cavity) should be 250oC.

Note4

Temperature of metal to ceramic seal.
Maximum allowable built-up curves of seal temperature is shown in the application note 3-3-1.

Note5

See outline drawing for measuring point.

Note6

This is measured within 15 seconds after applying anode voltage.
The standard ambient temperature of the magnetrons during this measurement is 25oC.
Peak anode voltage goes down with operating time from this value to a lower value due to the rather large temperature coefficient of ferrite magnet.

[Image] Note

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