The ZGFM5940B-AF-Q1-H is a high-performance unidirectional TVS diode manufactured by FORMOSA MICROSEMI. Supreme Components International is an authorised distributor of FORMOSA MICROSEMI components, ensuring you receive genuine and reliable parts. This diode is designed to protect sensitive electronic circuits from voltage transients induced by lightning, electrostatic discharge (ESD), and inductive load switching. It features a standoff voltage of 59V and a power dissipation of 400W. The ZGFM5940B-AF-Q1-H comes in an SMB (DO-214AA) package, making it suitable for surface mount applications. Its unidirectional configuration provides optimal protection for DC circuits. This TVS diode is an excellent choice for enhancing the reliability and longevity of your electronic designs.