Nisshinbo Micro Devices Inc. SOT89-5 R1191H080D-T1-FE

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The R1191H080D-T1-FE is a voltage monitor and reset IC manufactured by Ricoh. It belongs to a series of CMOS-based voltage detector chips with high threshold accuracy and ultra-low power consumption, enabling operation at very low voltages. The component triggers system resets in response to voltage drops below a predefined threshold, ensuring reliable protection for electronic systems against power supply fluctuations. No specific data sheet or additional details were provided; however, it's typically used for power management and safeguarding against under-voltage conditions in circuits.