SMF13A-HE3-18 Circuit Protection

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In the circuit protection market, TVS diode products are among the increasingly high-demand components.

The SMF13A-HE3-18 is a part of the TVS diode family and is used primarily for telecom systems which implement lightning and electromagnetic field (EMI) protection. It represents a fast-response, unilateral voltage clamping device that can protects against electrostatic discharge (ESD) throughout wide operating temperature ranges.

The SMF13A-HE3-18 TVS diode features a surge capability of 13A(8/20us) and an excellent clamping capability with a maximum peak pulse current of 13A. It has a working voltage rating of 18V, making it well suited for a variety of telecom applications such as line cards, telephone lines, digital modems, and access switches. Its miniature SMF package provides an ideal size for space-limited PCB design.

The SMF13A-HE3-18 utilises a basic structure which includes a PN junction and a metal oxide varistor (MOV). When an overvoltage occurs, the PN junction of the TVS diode is activated, allowing the capacitor to deploy across the MOV and clamping the voltage supports. In the event of an ESD occurrence, the clamping action helps reduce the surge voltage and protect the connected circuit.

Due to its low leakage current, fast response time, and high peak pulse current capability, the SMF13A-HE3-18 is particularly suited for high quality telecom systems. It also provides excellent protection against transient overvoltage threats such as ESD, induced lightning and EMI. The SMF13A-HE3-18 comes in a small size (SOT23) with high reliability, making it an ideal component for circuit protection applications.

In summary, the SMF13A-HE3-18 is a component which offers superior protection for telecom systems. It has an excellent surge capability and a high peak pulse current rating with a compact form factor. It is highly reliable and is suitable for use in a wide range of circuit protection applications.

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