The recommended footprint and land pattern for the 1.5SMB39A can be found in the Littelfuse application note 'Surface Mount Design Guide' (AN9313). It provides detailed information on pad layout, spacing, and soldering guidelines.
To ensure proper soldering, follow the recommended soldering profile and guidelines provided in the Littelfuse application note 'Soldering and Mounting Techniques' (AN9312). This includes using a soldering iron with a temperature range of 250°C to 260°C and a solder with a melting point of 180°C to 190°C.
The maximum allowable voltage derating for the 1.5SMB39A is typically 10% to 15% below the rated voltage, depending on the specific application and environmental conditions. However, it's recommended to consult with a Littelfuse application engineer or refer to the device's datasheet for specific guidance.
The 1.5SMB39A is rated for operation up to 150°C, but its performance and reliability may degrade at higher temperatures. For high-temperature applications, it's recommended to consider using a device specifically designed for high-temperature operation, such as the Littelfuse SMBJ series.
To select the correct 1.5SMB39A variant, consider factors such as the required voltage rating, current rating, and package type. Consult the Littelfuse datasheet and application notes, and consider consulting with a Littelfuse application engineer or a qualified design expert.
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1.5SMB39A Overview
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