The BZT52C43 with 40V~46V 500mW 43V SOD-123 Zener Diode ROHS, manufactured by Bourne, is a single-chip, low-cost, low forward voltage, 400mW surface-mount Zener diode designed for use in automotive applications and other high-voltage DC applications. This diode is rated at 40V to 46V with a maximum reverse power dissipation of 500mW and a zener voltage of 43V. The Zener diode is designed with a SOD-123 package, which offers a low profile, making it suitable for space-constrained applications. It is RoHS compliant and meets the safety requirements of the automotive industry for reliable and efficient operation. The Zener Diode is suitable for use in various low-power electronic components, such as digital and analog circuits, power supplies and voltage regulators.