Nisshinbo Micro Devices Inc. SOT89-5 R1191H120D-T1-FE

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The R1191H120D-T1-FE is a voltage monitoring IC from a manufacturer like Ricoh, designed for accurate threshold detection and low power consumption. This component operates at very low voltages and typically provides system reset functionality when voltage drops below a predetermined level. It integrates a voltage reference unit, comparator, and resistor network to set the detection threshold. Suitable for applications requiring reliable power supply supervision, it is available through distributors like Shenzhen Kechida Electronic Technology Co., Ltd. (as of 2021) or other suppliers in the electronics industry.