SMLJ51CA is a bidirectional transient voltage suppressor (TVS) diode designed for surge and ESD protection in electronic circuits. This device features a power dissipation rating of 3000 watts and is housed in a surface mount SMC (DO-214AB) package. The TVS diode series offers standoff voltages ranging from 5.0 to 170 volts and complies with IEC 61000-4-2 ESD (Min. Level 4), IEC 61000-4-4 EFT, and IEC 61000-4-5 Surge standards. The device is RoHS compliant and provides fast response times for effective transient protection. Common applications include portable communications, computing, and video equipment where compact surge protection is required.