SMF54A-E3-18

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Surge-protection components are an essential part of the system for protecting sensitive electronic components from external transients or power surges caused by lightning or other sources. Transient Voltage Suppressors (TVSs) are the leading solution for protecting powered equipment from high-voltage transients. The SMF54A-E3-18 is a TVS diode device from ON Semiconductor, designed to protect against overvoltage conditions.

The SMF54A-E3-18 offers unidirectional protection from transients or power surges, for consumer applications such as set-top boxes, flat-screen TVs or audio systems, as well as for industrial applications in automation or telecommunications. It is designed to suppress transient voltage changes, and can clamp overvoltage transients to a safe working voltage, thereby protecting sensitive electronic components from damage.

The TVS diode is available in an ultra-small SOD-323F package and offers a voltage stand-off of 18 V. With a leakage current below 100nA, a single-line bidirectional protection and an ultra-low capacitance of 0.7pF, the SMF54A-E3-18 ensures reliable protection against transients. It also offers fast response time, low power loss, and a peak pulse current rating of 9 A for 10/1000µs (8/20µs pulse width).

The Working Principle of the SMF54A-E3-18 is relatively straightforward. When the input voltage exceeds the device’s maximum breakdown voltage, the TVS diode will conduct current, momentarily. This will cause the voltage across the diode to drop, thus clamping the voltage surge. This limits the maximum voltage that can reach a protected load, and prevents the input voltage from overdriving or damaging the load.

The SMF54A-E3-18 is a cost-effective device that provides an ideal solution for overvoltage protection. It is RoHS compliant and halogen free, and is designed for low dv/dt and fast response time, making it suitable for a wide range of applications. In addition, the SOD-323F package offers excellent thermal and electrical characteristics for a wide range of TVS diode solutions.

The SMF54A-E3-18 is a reliable, fast-response TVS diode device, designed to protect electronic components and systems from external transients.With its low leakage current, low capacitance, and a maximum breakdown voltage rating of 18 V, the SMF54A-E3-18 is suitable for a wide range of consumer and industrial applications. The device is available in an ultra-small SOD-323F package, and offers fast response time, low power loss, and a peak pulse current rating of 9 A for 10/1000µs (8/20µs pulse width).

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