Bourns provides a recommended PCB layout and land pattern in their application notes. It's essential to follow these guidelines to ensure optimal performance, low inductance, and minimal parasitic effects.
To minimize magnetic field interference, keep the inductor at least 5 mm away from sensitive components, such as oscillators, antennas, or magnetometers. You can also use shielding materials or orient the inductor to minimize the magnetic field's impact.
While the datasheet specifies a maximum current rating, the maximum allowable voltage across the inductor is not explicitly stated. As a general rule, keep the voltage across the inductor below 2x the maximum rated current multiplied by the inductor's DC resistance (DCR) to avoid saturation and ensure reliability.
The SRF is typically not specified in the datasheet. To determine the SRF, use a network analyzer or impedance analyzer to measure the inductor's impedance vs. frequency. Then, design your circuit to avoid operating near the SRF to prevent unwanted resonances and ensure stable operation.
The tolerance on the inductance value is typically ±10% or ±15%. This tolerance can affect the performance of your design, especially in filter or resonant circuits. Be sure to consider the tolerance when designing your circuit and selecting component values.
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