Apples and oranges, that's not really suitable for our requirements. It's also a 600W instead of a 1500W part as typically recommended for the model train application. Did you check the features?
Littelfuse SM712 Series TVS Diode Array is a 600W Asymmetrical TVS diode array designed to protect RS-485 applications with asymmetrical working voltages (-7V to 12V) from damage due to electrostatic discharge (ESD), electrical fast transients (EFT), and lightning induced surges.
Stick to what works, this is a different application.