Nisshinbo Micro Devices Inc. 18.5V INPUT PWM/VFM STEP-DOWN DC R1224N552H-TR-FE

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The R1224N552H-TR-FE is an electronic component, specifically a high-frequency transistor, likely used in RF (radio frequency) circuits or amplifiers due to its “FE” suffix indicating it's a field-effect transistor. It operates on a supply voltage of 2.7V to 3.6V and has a maximum power dissipation rating of 800mW. The "TR" in the model number suggests that this device is packaged in a SOT-363 surface mount package for easy integration into PCBs.