Bourns recommends a symmetrical layout with a central pad for the inductor, and a minimum of 2-3 vias for thermal relief. A recommended land pattern is available in the Bourns application note AN-13.
The RL622-820K-RC is designed to handle high-frequency switching up to 1 MHz. However, it's essential to consider the skin effect and proximity effect, which may impact inductor performance. Consult the Bourns application note AN-12 for guidance on high-frequency design considerations.
While the datasheet specifies a rated current of 2.2 A, the maximum allowable current depends on the operating temperature and PCB design. As a general guideline, Bourns recommends derating the current by 10-20% to ensure reliable operation.
The RL622-820K-RC is rated for operation up to 125°C. However, it's essential to consider the temperature coefficient of inductance (TCI) and the potential for thermal runaway. Consult the Bourns application note AN-11 for guidance on high-temperature design considerations.
Bourns recommends using a soldering profile with a peak temperature of 240°C (max) and a soldering time of 3-5 seconds (max). Ensure the inductor is securely attached to the PCB using a suitable adhesive or mechanical fastening method to prevent vibration and mechanical stress.
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