SMA5J28CHE3/61

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TVS diodes, also known as Transient Voltage Suppressor or Transient Voltage Suppression devices, are semiconductor electronic components that are designed to provide increased protection against transient voltage or sudden bursts of electrical current in a circuit. TVS devices provide automatic protection against electrical surges and overloads, reducing the risk of equipment failure and potential safety hazards. The SMA5J28CHE3/61 is a TVS device designed to protect sensitive electronics against electrical transients that are caused by lightning, electrostatic discharge, and other sources.

Operating Principle

The SMA5J28CHE3/61 TVS uses the principle of Zener breakdown voltage to operate – i.e. the voltage at which current conduction in the reverse direction becomes a significant effect. When the device is exposed to transient voltage above the Zener level, it breaks down and becomes a low impedance conduction path. This allows the surge current to pass through, preventing damage to the protected circuit.

Design and Operation

The SMA5J28CHE3/61 is a bi-directional, silicon-based TVS diode designed to protect against high-energy transients. It is constructed using two back to back Schottky diodes, which provide up to 1.5A of surge current protection. The device also incorporates an over-voltage shutoff circuit which detects when transient voltage rises above the Zener breakdown voltage and shuts off the current flow, ensuring that no damage is done to the protected circuit.

Application fields

The SMA5J28CHE3/61 TVS diode is typically used to protect sensitive electronic equipment from surges caused by lightning and electrostatic discharge. It is well-suited for use in power equipment, industrial equipment, control systems, vending machines, and other applications where protection against transient voltage disturbances is necessary. It is especially useful in applications where the protection circuit must be as small and compact as possible, as the SMA5J28CHE3/61 has a compact SMA package that takes up minimal board space.

Conclusion

The SMA5J28CHE3/61 is a TVS diode that provides protection against transient voltages caused by lightning, electrostatic discharge, and other sources. It is designed with an over-voltage shutoff circuit which helps prevent damage to the protected circuit by shutting off current when voltage rises above the Zener breakdown voltage. The SMA5J28CHE3/61 is well suited for use in power equipment, industrial equipment, vending machines, and other applications where protection against transient voltage disturbances is necessary.

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