Bourns provides a recommended PCB layout and land pattern in their application note AN164, which can be found on their website. It's essential to follow these guidelines to ensure optimal performance and minimize parasitic effects.
The MF-USML350/12-2 has a maximum operating temperature of 125°C. To ensure reliable operation, it's crucial to consider thermal derating, especially in high-power applications. Bourns provides thermal derating curves in the datasheet, which can be used to determine the maximum allowable current at a given temperature.
The SRF of the MF-USML350/12-2 is not explicitly stated in the datasheet. However, it can be estimated using the inductor's inductance and capacitance values. The SRF typically occurs at a frequency where the inductor's impedance is at its maximum. It's essential to consider the SRF when designing filters or impedance-matching networks to avoid unwanted resonances.
While the MF-USML350/12-2 is a high-quality inductor, it may not meet the specific requirements of high-reliability or aerospace applications. Bourns offers other inductor series, such as the SRP and CSR series, which are designed specifically for these types of applications and meet relevant industry standards (e.g., MIL-PRF-83446).
The datasheet provides the inductor's DC resistance (RDC) and inductance (L) values. To estimate the core losses and AC resistance, you can use the following equations: Core loss (Pcore) = (Rac * I^2) + (Lf * f * I^2), where Rac is the AC resistance, I is the current, Lf is the core loss factor, and f is the frequency. The AC resistance can be estimated using the datasheet's RDC value and the skin effect equation.
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