Part Details for RXEF090S by Littelfuse Inc

For optimal thermal performance, it is recommended to have a large copper area on the PCB under the device, connected to a solid ground plane. This helps to dissipate heat efficiently. Additionally, keeping the PCB traces away from the device's thermal pad and using thermal vias can also improve thermal performance.

To select the correct fuse, consider factors such as the maximum current rating, voltage rating, and interrupting rating required for your application. Also, consider the fuse's melting I²t, which should be higher than the maximum I²t of the circuit. Additionally, ensure the fuse's operating temperature range matches your application's requirements.

The RXEF090S is a radial lead, fast-acting fuse with a high interrupting rating, making it suitable for high-reliability applications. Compared to other similar fuses, the RXEF090S has a unique combination of characteristics, such as its high melting I²t, low voltage drop, and compact size, making it suitable for specific applications such as power supplies, motor control, and industrial equipment.

To ensure proper installation and security, follow the recommended PCB layout and footprint guidelines. Use a sufficient amount of solder to secure the fuse leads, and avoid applying excessive force or torque during installation. Additionally, consider using a fuse clip or holder to prevent the fuse from shifting or vibrating during operation.

Common failure modes of the RXEF090S include overheating, electrical overstress, and mechanical stress. To mitigate these, ensure proper thermal management, follow the recommended voltage and current ratings, and avoid exposing the fuse to excessive mechanical stress or vibration. Additionally, consider implementing overcurrent protection and overvoltage protection in your design.