The SM4F40A-MS-Q1-H is a high-performance Transient Voltage Suppressor (TVS) diode manufactured by Formosa Microsemi. This unidirectional diode is specifically designed to protect sensitive electronic equipment from voltage transients induced by lightning, electrostatic discharge (ESD), and inductive load switching. With a standoff voltage of 40V and a peak pulse power dissipation of 400W, the SM4F40A-MS-Q1-H provides robust overvoltage protection. Its DO-221AC (SMPC) package allows for efficient heat dissipation and easy surface mounting. Supreme Components International is an authorised distributor of Formosa Microsemi components, ensuring you receive a genuine and reliable product. This TVS diode is ideal for use in automotive, industrial, and consumer electronics applications where transient voltage protection is critical. Benefit from superior surge protection and enhanced system reliability with this high-quality TVS diode.