M1475A NISSHINBO | Alldatasheet
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Date Oct. 26, 2022 X-band Magnetron Model No. M1475A Copyright© Nisshinbo Micro Devices Inc. Microwave Business Headquarters -Notice of Proprietary Information- This document and its contents are proprietary to Nisshinbo Micro Devices Inc. This publication and its contents may not be reproduced or distributed for any other purpose without the written permission of Nisshinbo Micro Devices Inc. Those specifications listed in this document are subject to change at any time. Microwave Business Headquarters Title: Datasheet of M1475A Reference No.: DS-M1475A Rev.: 03E Sheet: Released
＊Above Specifications are subject to change without notice. Reference No.: DS-M1475A Rev.: 03E Sheet: ■ GENERAL DESCRIPTION M1475A is designed for the magnetron of X-band radar system. The frequency range is fixed <93 45 - 9405MHz> and the peak output power is 25kW. ■ ELECTRICAL CHARACTERISTICS PARAMETERS MINIMUM TYPICAL MAXIMUM UNITS Heater voltage (note 1) 5.7 6.3 6.9 V Heater current 0.43 0.52 0.6 A Preheat time 120 - - s Peak anode voltage (note 2) 7.2 8.0 8.5 kV Peak output power (note 2) 22.5 25.0 - kW Frequency (note 2) 9345 9375 9405 MHz ■ ABSOLUTE MAXIMUM RATINGS These ratings cannot necessarily be used simultaneously and no individual ratings should be exceeded. PARAMETERS MINIMUM MAXIMUM UNITS Peak anode current (note 3) 6.0 10.0 A Peak anode power input - 75 kW Duty cycle - 0.001 - Pulse duration 0.05 1.2 μs Rate of rise of voltage pulse - 100 kV/μs Anode temperature - 110 ℃ VSWR at the output coupler - 1.5 : 1 - Notes 1. With no anode input power. For average pulse input powers greater than 25 watts, the heater voltage must be reduced within 3 seconds after the application of h.t. according to the following schedule: Heater Voltage:Ef = 6.31 − 𝑃𝑃𝑃𝑃 100 [V] Mean input power (Pi) ＝ Anode current ×Anode voltage ×Duty cycle (W) 2. Measured at peak anode current 8.0A.
＊Above Specifications are subject to change without notice. Reference No.: DS-M1475A Rev.: 03E Sheet: 3. Any overshoot of the anode current is not acceptable. The impedance of this magnetron is the same as current magnetron excluding the transient impedance. This means that the additional reactance should be required for adjustment the anode current wave form, if this magnetron will be installed into the similar modulator circuit as before. ■ OUTLINE (Dimensions are expressed in “mm”.)