The SM5451 is an integrated circuit (IC) chip that's an original part for Samsung Galaxy phones. It's compatible with the following models:
SM-A336B A33 5G (2022)
SM-A346B A34 5G (2023)
SM-G990B S21 FE 5G (2022)
SM-M236B M23 5G (2022)
SM-M336B M33 5G (2022)
SM-M536B M53 5G (2022)
SM-A536B A53 5G
SM-F721B Z Flip4
SM-F926B Z Fold3 5G
SM-F936B Z Fold4