SMP24A-E3/85A

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TVS (Transient Voltage Suppressor) diodes serve to protect a component or system against electrostatic discharges. The SMP24A-E3/85A is a component in this field of protection technology, offering a variety of performance characteristics ideal for industry-standard and specialty applications.

Functionality

TVS diodes provide a combination of low clamping voltage and high peak power capability to safeguard equipment against electrostatic discharge (ESD) and other transient voltage events. The SMP24A-E3/85A is a RoHS and REACH compliant, industry-standard diode, known as an SMPD (Surface Mount Protection Diode). SMPD diodes feature high sensitivity and low capacitance, which make them suitable for protecting equipment and systems against ESD events. Additionally, SMPD diodes offer superior shielding and protection against a range of high-energy transients including electrostatic discharge (ESD), electroinduced transients, and other high-energy fast transients.

Application Field

TVS diodes protect a wide variety of applications, from small and medium-sized electronics to data lines and sensitive components. In particular, the SMP24A-E3/85A is designed for use in the 800W surge environment, making it ideal for protection of computers, servers, consumer electronics, automotive electronics and industrial control systems. Its design characteristics make it highly suitable for ensuring reliable protection against ESD product and other high-energy transients. Additionally, the SMP24A-E3/85A offers superior performance in telecommunications, data communications, and medical applications. It is also increasingly being used in renewable energy applications, such as photovoltaic systems, and to protect ICs from pulse transients.

Working Principle

The SMP24A-E3/85A functions as a circuit-level protector, preventing the passage of large, potentially damaging voltage spikes from the power source to the protected device. It does so by shunting the voltage spike to ground, preventing the passage of excessive current through the protected device. SMPD diodes work through a process known as avalanche breakdown. This process occurs when an applied electric field is strong enough to cause electrons to be ripped away from their atoms, creating an avalanche of electrons that allow the diode to conduct electricity. This breakdown occurs at a specific voltage level, called the avalanche or breakdown voltage. In the case of the SMP24A-E3/85A, the breakdown voltage is 24V.

When a voltage surge higher than 24V is applied to the diode, the avalanche effect occurs and the diode conducts, allowing the voltage surge to be shunted to ground and preventing it from passing through the protected device. This process is repeated each time a voltage spike that exceeds 24V occurs, up to the specified peak power rating of 800W.

Conclusion

The SMP24A-E3/85A offers an effective passive protection solution against electrostatic discharge and other transients. Its specified breakdown voltage of 24V and peak power rating of 800W make it an ideal choice for use in a wide variety of applications, from consumer electronics to industrial control systems. Additionally, its RoHS and REACH compliance make it an attractive choice for manufacturers looking for an industry-standard diode that conforms to environmental standards.

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