1SMA28AT3G

TVS (Transient Voltage Suppressor) Diodes are semiconductor devices that can help protect sensitive pieces of equipment and components from high voltage surges that can cause electrical overstress and potential failure. The 1SMA28AT3G is such a device used in many applications due to its capability to provide a high level of protection from short and fast voltage spikes.

What is the 1SMA28AT3G?

The 1SMA28AT3G is a unidirectional transient voltage suppression diode commonly used in consumer, industrial, automotive, telecom, and medical applications. This diode is a Low Capacitance Surge absorber with a maximum peak pulse power of 400 Watts and a maximum peak pulse current of 28 Amps. This diode is also fast enough to respond to a 12 volts surge in typically 5 to 8 nanoseconds.

Application Field and working principle

Given its robust characteristics, the 1SMA28AT3G is typically used in AC/DC line and circuit protection where very high voltages need to be supplemented. It is used in a variety of lines and circuits like personal computers, Home Theater systems, HDTVs, product chargers and battery powered devices. The diode uses a simple circuit to limit the peak current and reduce the resistor voltage at high power segments or spikes, thus allowing the device connected to the AC/DC line or circuit to operate safely and reliable.

The diode works by clamping the peak voltage level to a predetermined range. When the voltage reaches a certain level, the diode switches from high resistance to low resistance and thus guards the downstream device or component. This occurs in just a few Picoseconds, too fast for most circuits to notice. It essentially limits the voltage to a safe level and protects other devices. The 1SMA28AT3G is also designed with added protection from overcurrent surges as well.

Benefits

The 1SMA28AT3G offers many benefits to devices or components connected to its circuits. It can provide protection from power surges, lightning strikes, and other forms of voltage spikes. It also helps to prevent EMI and RFI interference. The device is also rated for a peak pulse power of up to 400 Watts and a peak pulse current of 28 Amps, making it suitable for many applications.

The added benefit of the 1SMA28AT3G is that it is small in size, making it easy to install. Its fast response time of 5-8 Nanoseconds also makes it ideal for applications with short, fast voltage spikes. It is also RoHS compliant, meaning it is free from lead and other hazardous materials.

Conclusion

The 1SMA28AT3G is an excellent solution for power surge and lightning protection. It is suitable for many applications including consumer, industrial, automotive, telecom, and medical devices. It is also easy to install, RoHS compliant, and fast responding. All these favorable characteristics make it an attractive choice for many different uses.