The recommended footprint and land pattern for the 1.5SMBJ48A can be found in the Bourns application note AN164, which provides guidelines for surface mount assembly and layout considerations.
To select the correct TVS diode, consider factors such as the maximum voltage, current, and power rating required for your application. Also, consider the clamping voltage, response time, and capacitance of the TVS diode. Bourns provides a TVS Diode Selection Guide that can help with the selection process.
A unidirectional TVS diode protects against voltage surges in one direction, whereas a bidirectional TVS diode protects against voltage surges in both directions. The 1.5SMBJ48A is a unidirectional TVS diode. If bidirectional protection is required, a different part number such as the 1.5SMBJ48CA should be considered.
The 1.5SMBJ48A is a commercial-grade TVS diode with a maximum operating temperature of 150°C. For high-reliability or high-temperature applications, Bourns offers other TVS diode options such as the 1.5SMCJ48A, which is qualified to AEC-Q101 and has a maximum operating temperature of 175°C.
Follow the recommended soldering and assembly guidelines provided in the Bourns application note AN164, which includes information on soldering temperatures, times, and techniques, as well as handling and storage recommendations.
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1.5SMBJ48A Overview
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