Nisshinbo Micro Devices Inc. SOT89-5 R1130H251B-T1-FE

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The part number R1130H251B-T1-FE refers to a specific electronic component, likely a network interface card or module designed for use in a telecommunications or networking device. This part is possibly intended for Cisco equipment, given the naming convention aligns with Cisco's product line, and could provide Fast Ethernet connectivity (FE) over T1 interfaces, suggesting it enables data transmission at up to 100 Mbps on T1 circuits. However, without detailed documentation, exact specifications cannot be confirmed.