SMDA03C-4E3/TR7 Circuit Protection

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TVS diodes are a type of semiconductor device used for protection against forces of nature such as mutli-level electrostatic discharge (ESD) and surge transient pulses. An SMDA03C-4E3/TR7 is a Transient Voltage Suppression (TVS) diode for ESD and Transient Protection, designed for protecting signals and sensitive electronics against damage due to high voltage transients from lightning or other sources.

The SMDA03C-4E3/TR7 was developed by STMicroelectronics and comes in a very small SOD-323 package size, which makes it suitable for applications with limited mounting area and ease of implementation. It features improved levels of ESD protection, based on an active array of four diodes connected in a reverse-parallel and back-to-back configuration to dissipate the incoming surge energy.

The working principle of the SMDA03C-4E3/TR7 involves the application of active arrays with four diodes for ESD and transient protection. The four-diode design enables the device to provide a wide range of protection against multiple transient voltage levels, from multiple sources. The device has the ability to absorb higher energy than standard diodes and provide fast response time in the nanosecond range. The device is capable of handling up to 15 kV contact and 30 kV air discharge as specified per IEC 61000-4-2 and IEC 61000-4-4.

The SMDA03C-4E3/TR7 also features over-voltage protection. The peak pulse power of these devices ranges from 150W to 400W depending on the size and package. The working voltage can range up to 12V, making this device suitable for use in very low-voltage circuits. All these features make the device an excellent choice for Consumer Electronics, Automotive, Communications, Industrial and IoT applications.

In conclusion, the SMDA03C-4E3/TR7 Transient Voltage Suppression (TVS) diode is an excellent choice for providing protection against ESD and transient pulses from various sources. It is a small size device that can be easily implemented in applications with limited mounting area. It offers superior protection compared to standard diodes, with a peak pulse power of up to 400W and an operating voltage range of up to 12V. It is suitable for Consumer Electronics, Automotive, Communications, Industrial and IoT applications.

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