SMBJ188A

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A SMBJ188A is an unidirectional electronic component often referred to as a transient voltage suppressor (TVS), also known as a rail-to-rail protection diode or zener diode. These components are typically used in electronic circuits to protect against transient voltages above a predetermined threshold. These circuit protection solutions are much more reliable than their traditional fuse cousins.

The SMBJ188A has two main characteristics that make it a desirable choice when choosing a TVS diode; its relatively low breakdown voltage of 18V and a peak power rating of 188W. This allows for reliable protection in low voltage applications. It also uses an axial lead design, meaning that it can be easily installed into most printed circuit boards.

The SMBJ188A works to protect an electronic device when the input voltage exceeds 18V. This can occur when too much current is drawn from a circuit, or when there is an increase in voltage due to a surge or transient. When this occurs, the SMBJ188A will begin to conduct the excess current away from the device, preventing the device from being damaged.

The SMBJ188A is often used in power supplies, automotive electronics, consumer electronics, and medical electronics. In power supplies, it can be used to protect the device from transient voltages that are caused by overvoltage events and power surges. In consumer and automotive electronics, such as automotive starting systems and audio systems, they are often used to protect components from voltage spikes caused by switching inductive loads. In medical electronics, the SMBJ188A is used to protect devices from electrical surges caused by electrostatic discharge (ESD).

The SMBJ188A can also be used in some low-voltage digital logic circuits to protect against electrostatic discharge events. These devices are often used in conjunction with other ESD protection devices, such as TVS diodes and antenna structures.

The SMBJ188A is a reliable and versatile choice when selecting a TVS diode. It has a relatively lower breakdown voltage of 18V and a peak power rating of 188W and an axial lead design making it easy to install. The SMBJ188A is often used in power supplies, automotive electronics, consumer electronics, and medical electronics to protect the device from transient voltages, overvoltage events, and power surges.

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