MX1N8181 Circuit Protection

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TVS (transient voltage suppressor) diodes are widely used in a variety of applications, such as high-speed data signaling, power supplies, telecom lines, and mission critical equipment. The MX1N8181 diode, from ON Semiconductor, is a general-purpose thyristor suitable for a broad range of applications from ITE, automotive and industrial use. This diode offers excellent surge and ESD protection characteristics, along with robust on-state performance.

The MX1N8181 diode operates as a low-cost circuit-level protector for sensitive electrical components. It works by detecting the momentary voltage clamp on the parallel circuit nodes, then shunting the surge current away from the electronic component. The actual voltage clamp is dependent on the diode’s avalanche voltage, which is determined by the type of substrate used in the diode’s fabrication process. Typically, the avalanche voltage is a few times higher than the nominal working voltage of the diode.

The MX1N8181 diode features an Auto Restrike Function, which is a key benefit for applications that use Non-Latching I/O’s. This reduces the number of reset cycles necessary after a voltage overshoot event. The MX1N8181 provides a faster restrike than other TVS diodes, which means it restrikes faster than any available resistive TVS device. This leads to a reduced amount of power wasted from an overload situation by reducing the number of reset cycles needed to recover from a voltage surge.

The MX1N8181 diode is also equipped with an Enhanced Configuration Processing (ECP) technology to further enhance its protection capabilities. This technology provides clamping protecting during voltage overshoots of up to 70V. This combination of features provides an excellent level of protection and ensures that the diode can handle both high-voltage and high-energy surges.

The MX1N8181 diode has a switching speed of 1.2mV/ps and a standby current of 17.5mA. This diode also has an ultra-low (1.5mV) voltage drop and a low thermal resistance of 0.14 C/W. The MX1N8181 is suitable for printed circuit boards, controllers, connectors, and other components that require high-speed surge protection.

ON Semiconductor’s MX1N8181 TVS diode offers a proven solution for protecting sensitive electronic components against momentary power or voltage spikes. Its features include an Auto Restrike Function, Enhanced Configuration Processing technology, a switching speed of 1.2mV/ps, and an ultra-low voltage drop of 1.5mV. These features make the MX1N8181 an ideal choice for a wide range of applications, such as ITE, automotive, and industrial.

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