SMAJ28HE3/5A

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SMAJ28HE3/5A is a unidirectional unidirectional transient voltage suppressor (TVS), used to protect voltage sensitive components to protect against over voltage transients. This TVS diode is specified to absorb repetitive eletrostatic discharge (ESD) strikes up to 26kV. This type of TVS diode is available in SMA and SMB packages that are suitable for surface mount applications.

The SMAJ28HE3/5A is designed to protect devices such as LCD screens, hard disks, and other data storage products from the high electric fields generated by ESD. The device operates by clamping any ESD transients to the supply rail, protecting downstream components from voltages greater than their rating. The SMAJ28HE3/5A TVS is also a suitable solution for other protection needs such as in automotive and industrial systems.

The SMAJ28HE3/5A has a fast response time of less than 1 nanosecond and is designed to clamp transients up to 28V. The device is designed to be used in a variety of applications with peak pulse power ratings ranging from 600W to 5kW. The operating temperature range of -55°C to +125°C make it suitable for a wide range of applications.

The working principle of the SMAJ28HE3/5A is fairly straightforward. When exposed to an ESD event, the TVS diode provides a low impedance path to ground. This reduces the high voltage spike from the ESD event and reduces the voltage seen by the downstream components. When the transient voltage is lower than the breakdown voltage of the TVS diode, it essentially blocks any further current; when the transient is greater than the breakdown voltage, the device begins to conduct and shorts the voltage to ground through its low impedance path.

The SMAJ28HE3/5A is the perfect solution for system designers looking for a low cost, high performance ESD protection solution. Its robust design and fast response time make it a great choice for use in portable devices, automotive, and industrial applications.

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