SMF48A-E3-18

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A TVS (transient voltage suppression) diode is a specialized semiconductor protection device designed to protect electronic circuitry from transient voltage events. The SMF series of TVS diodes comes in a variety of power ratings, and the SMF48A-E3-18 is a single-ended TVS device with a rated power dissipation of 18 Watts. It has a low parasitic capacitance of 3pF per channel, and its reverse leakage current rating is 0.25 μA.

The SMF48A-E3-18 TVS diode is designed for high-frequency, low capacitance application. It features a low forward voltage drop of 1.3V at 1A, and its surge capability surpasses industry standards. It can withstand more than 20 discharge impulses of 200V at frequencies ranging from 10kHz to 100MHz.

The SMF48A-E3-18 is suitable for a wide range of applications, including telecom, automotive, consumer electronics, and industrial control systems. It can effectively protect sensitive electronic components against electromagnetic interferences and damaging transients from over-voltage and switching noise. It also provides ESD protection, offering an industry-standard IEC level 3 (8 kV contact discharge) rating.

The working principle of SMF48A-E3-18 is based on avalanche breakdown. When an excessive voltage is applied to the diode, it breaks down due to soft breakdown effect, and the current flowing through its channels is limited by its built-in low on-state resistor. As a result, ESD clamps, well as voltage surges, are effectively suppressed.

The SMF48A-E3-18 also comes with a built-in graded multiplicity which helps the device handle multiple transient events in succession without damage. Additionally, its junction temperature rating is 125°C, making it suitable for operation in harsh environments.

The SMF48A-E3-18 TVS diode is an ideal choice for applications that require reliable surge protection and fast response times. Its low capacitance enables high-speed signal processing, while its exceptional surge capability makes it suitable for environments with exposure to extreme ESD strikes. It is also highly reliable, with a lifetime of more than 10 years.

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