The SM4F58A-MS-Q1-H is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by FORMOSA MICROSEMI. Supreme Components International is an authorised distributor of FORMOSA MICROSEMI components, ensuring you receive genuine parts. This TVS diode is designed to protect sensitive electronic circuits from voltage transients induced by lightning, electrostatic discharge (ESD), and inductive load switching. It features a reverse standoff voltage of 58V and a peak pulse power dissipation of 400W. The SM4F58A-MS-Q1-H comes in a compact DO-221AC package, making it suitable for various applications where space is limited. Its unidirectional configuration provides optimal protection for DC circuits. This robust TVS diode enhances the reliability and longevity of your electronic devices by effectively clamping transient voltages.