SA78HE3/73

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Transient Voltage Suppressor (TVS) Diodes are a class of semiconductor devices that rapidly clamp and limit transient overvoltage, spikes and transient currents in electronic circuits. They provide a high level of protection from overvoltage surges, radio frequency interference, and electromagnetic interference. The SA78HE3/73 is a TVS device designed to protect against transient overvoltage and radio frequency interference in a variety of electronic circuits.The SA78HE3/73 is a bi-directional diode with a breakdown voltage of 43V and a maximum peak pulse current of 300A (10/1000μs). It is available in a variety of industry-standard packages that include SC-75, SC-76, and SC-82. The device is designed to handle power transients from -7 to +7V and has a power dissipation rating of 1000mW. The device has an operating temperature range of -55°C to +125°C.The SA78HE3/73 design utilizes a fast-responding, voltage-controlled, bilateral Zener structure to provide protection from high-energy power transients and radio frequency interference. The device\'s voltage-controlled structure rapidly clamps the voltage and reduces the average clamping current during the transient. This ensures that the device does not become damaged and can operate in a wide range of power systems.The device operates on the principle of voltage-controlled overvoltage protection. When the applied voltage across the device exceeds the breakdown voltage, the diode is activated and the voltage is clamped at the breakdown voltage, providing protection from sustained overvoltage. When the voltage across the device returns to normal, the device reverts to its inactive state. This ensures that the device does not interfere with normal circuit operation.The SA78HE3/73 has a maximum surge current rating of 300A (10/1000μs) and a peak power rating of 1000mW, making it suitable for use in a wide range of power systems. The device is available in industry-standard packages and is designed to last for 2 million minimum device operations. The device is RoHS compliant and meets UL Φ.1 requirements.The SA78HE3/73 provides excellent protection from transient overvoltage and radio frequency interference and is designed to be used in a variety of commercial and industrial applications. It can be used in power systems, data communications, consumer electronics, automotive, aerospace, and medical electronics, among other applications.The SA78HE3/73 is an excellent choice for protecting electronic circuits from high-energy power transients and radio frequency interference. Its fast-responding, voltage-controlled, bilateral Zener structure provides reliable protection from transient overvoltage and radio frequency interference, while its maximum current and power ratings make it suitable for a wide variety of applications.

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