SMCJ75CA-M3/9AT Circuit Protection

SMCJ75CA-M3/9AT is a three (3) terminal, surface mount Transient Voltage Suppressor (TVS) device, popularly used with Rectifier Diodes for providing electrostatic discharge (ESD) protection to voltage sensitive circuitry. The device is capable of providing protection against voltage overshoot/undershoot events, such as electrical surges, and electromagnetic transients.

Application Field

SMCJ75CA-M3/9AT\'s greatest protection advantage is applicable in ultra-fast switchers such as switching power supplies, telecommunications, industrial electronics, and modern automotive electronics. This robust and proven TVS component is designed and manufactured to meet the demands of high-speed switching transients. It is engineered with very short response time in order to protect high-frequency, logic-level, or low voltage sensitive circuits such as I/O lines, transceivers, and data lines.

Working Principle

The SMCJ75CA-M3/9AT works by clamping excessive surge voltages and preventing them from entering the protected device. This can be best visualized as a "trap door" in the circuit that quickly latches shut when an excessive surge or voltage is detected and prevents it from entering the protected equipment. In the event of a surge, the TVS has a very large "absorption capability" so that the user\'s design can meet the lowered risk of destruction to the effected components.

The SMCJ75CA-M3/9AT absorbs electrical transients, during which are energized and converted these transients into heat, and thus eliminating the danger of a destructive surge. The device is specially designed to offer a very low incremental surge resistance, commonly referred to as "the dynamic resistance" of the device. This low-dynamic resistance allows the device to better protect the circuit from unusually high voltages and currents.

Overall, the SMCJ75CA-M3/9AT is a highly reliable, economical and fast-acting TVS diode designed to provide surge protection against transients in a variety of applications. This device offers superior performance and excellent static clamping performance in case of an extreme voltage overshoot or undershoot. This diode is made with excellent protection against high-speed switching transients and is designed to protect complex high-tech systems.