The SM4NT85A-H is a Transient Voltage Suppressor (TVS) Diode from FORMOSA MICROSEMI, designed to safeguard electronic circuits from damaging voltage transients. With a reverse standoff voltage of 85V and a peak pulse power dissipation of 400W, this diode effectively clamps voltage spikes, preventing them from reaching sensitive components. Its fast response time and low clamping voltage make it suitable for protecting against electrostatic discharge (ESD), electrical fast transients (EFT), and lightning surges. The SM4NT85A-H is housed in a DO-214AC (SMA) package, offering easy board mounting and efficient heat dissipation. Typical applications include I/O protection, data lines, and power supplies. Supreme Components International is an authorized distributor of FORMOSA MICROSEMI, guaranteeing genuine components and reliable performance.