Application fields

TVS diodes are often used for general purpose ESD protection, rack-mount systems, communications systems, LED lighting applications, and other related circuits, such as the SMF36A-T13. The SMF36A-T13 is designed for protecting devices against the surges of IEC 61000-4-2 Level 3 (6kV, 3A) of transient voltage.

The device affords an easy implementation and offers great reliability, excellent ESD protection, and superior surge capability. It is ideal for protecting the data lines of sensitive electronic components within automotive applications.

The major applications for it include ITE (including PCs and peripherals), telecoms, and consumer electronics. It can be employed in any device with line protection.

Working Principle

TVS diodes work by diverting surge current away from the sensitive components it is protecting. It leads to a breakdown of the electric field across its Zener junction, clamps the voltage during the surge and lowers the return time to normal.

When the voltage rises over its rated withstand voltage, the TVS diode quickly conducts high currents, thus limiting the voltage growth. This causes the peak voltage to be clamped at the rated breakdown voltage, which protects the device and its components. It then quickly returns to its block state, so that it can be used again for further surges.

The SMF36A-T13 includes built-in thermal shutdown by providing a fast thermal shutdown response. It also offers excellent clamping performance and low leakage colling capacitance.