1SMA58AT3G Zener Diode: Key Specifications and Applications from onsemi

The 1SMA58AT3G from onsemi is a surface-mount, 5.8V Zener diode belonging to the popular SMA family. Engineered for voltage regulation and protection in compact electronic circuits, this component is a fundamental building block in modern power management design. Its primary role is to maintain a stable reference voltage across its terminals, making it indispensable for safeguarding sensitive components from voltage spikes and ensuring consistent operational performance.

A key highlight of the 1SMA58AT3G is its tight voltage tolerance of ±5%, which ensures a highly reliable and precise voltage reference at 5.8V. This part can handle a maximum power dissipation of 500mW and offers a low typical dynamic impedance of 5Ω, enabling effective regulation even under varying load conditions. Housed in a compact SMA (DO-214AC) package, it is ideally suited for automated PCB assembly and space-constrained applications. Furthermore, it is qualified for automotive-grade (AEC-Q101) applications, meeting stringent requirements for reliability and performance in harsh environments.

The applications for the 1SMA58AT3G are extensive. It is most commonly used as a voltage regulator in low-current power supplies to clamp or stabilize voltage levels. It also serves as a critical voltage spike protector or ESD (Electrostatic Discharge) clamp to shield integrated circuits (ICs) and other delicate components from transient overvoltage events. You will frequently find it in power management units, automotive electronic control units (ECUs), communication devices, and consumer electronics.

ICGOOODFIND: The onsemi 1SMA58AT3G is a robust and precise 5.8V Zener diode, offering excellent voltage regulation and circuit protection in a miniature, automotive-qualified package, making it a versatile solution for modern electronic design.

Keywords: Zener Diode, Voltage Regulation, Circuit Protection, AEC-Q101, Surface Mount