SMCG15CA-M3/9AT

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TVS - Diodes are widely used for electrical protection against transient electrical surges such as Electrostatic Discharge (ESD) or Electrical Fast Transient (EFT) and can be divided into two types: uni-directional and bi-directional. The SMCG15CA-M3/9AT TVS is a uni-directional TVS diode, designed to protect sensitive electronics from transients caused by IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (Lightning Induced Surge).

The SMCG15CA-M3/9AT is designed for automotive applications such as Air-bag and ABS, which require a high degree of protection against ESD, EFT and Lightning induced surge. It is a high-speed ESD protection diode, that is optimized for low capacitance and low capacitance change with voltage. This allows for low insertion loss at high speed data rates up to 1 Gigabit rate. It also provides improved thermal stability over a wide range of temperatures, making it a very reliable component for automotive applications.

The working principle of the SMCG15CA-M3/9AT is based on the Avalanche Breakdown effect. During a negative transient event, a large negative voltage applied to the junction of the diode rightward to the anode causes free carriers (electrons and holes) to be accelerated and the avalanche multiplication occurs. This avalanche multiplication quickly increases the current flowing though the diode, which is referred to as a breakdown current. The transient voltage is therefore clamped at a safe level. This clamping guarantees protection for sensitive electronic components and prevents damage.

The SMCG15CA-M3/9AT has an ESD rating of 3kV (Human body model), 8kV (Machine model), and 15kV (IEC 61000-4-2 Air Gap discharge). The ESD protection level can be up to 8kV and the clamping voltage is up to 20.2V at 8A peak pulse current. The device is capable of handling up to 30 Watts of power, making it an excellent choice for extremely high power applications. In addition, the device is also RoHS compliant and meets industry standards for ESD protection.

The SMCG15CA-M3/9AT is typically used in automotive applications such as Air-bag and ABS for transient protection, as well as in other industrial applications where high power and low capacitance are of paramount importance. The device is typically used in conjunction with other components in order to provide protection in the event of a transient surge. The surge protection provided by the SMCG15CA-M3/9AT is essential in ensuring the safety and reliability of automotive systems and other industrial applications.

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