The ZS4755A-AF-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 equipment from voltage transients induced by lightning, inductive load switching, and electrostatic discharge (ESD). It features a 400W power dissipation capability and is housed in a surface-mount DO-214AC (SMA) package for easy integration into your PCB design. The ZS4755A-AF-H offers excellent clamping performance and fast response time, making it an ideal choice for protecting I/O interfaces, VCC bus, and other vulnerable circuits. Its unidirectional configuration provides optimal protection against positive voltage transients.