Bourns provides a recommended PCB layout and land pattern in their application notes. It's essential to follow these guidelines to ensure optimal performance, minimize parasitic inductance, and reduce electromagnetic interference (EMI).
To minimize magnetic field interference, keep the inductor at least 5 mm away from sensitive components, such as oscillators, antennas, or magnetically sensitive devices. You can also use shielding techniques, like copper tape or mu-metal, to contain the magnetic field.
While the datasheet specifies a maximum rated current, it's essential to consider the voltage across the inductor as well. As a general rule, keep the voltage across the inductor below 1.5 times the maximum rated voltage to prevent saturation and ensure reliable operation.
The SRF is typically not a concern in most applications, but it's essential to consider it when designing high-frequency circuits. To minimize the impact of SRF, use the inductor in a circuit with a resonant frequency below the SRF, or add a damping resistor to reduce the Q factor.
The MF-SM185/33-2 has a maximum operating temperature of 125°C. To ensure reliable operation, ensure good airflow, use a heat sink if necessary, and avoid exceeding the maximum rated current. Also, consider derating the inductor's current rating at higher temperatures to prevent overheating.
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MF-SM185/33-2 Overview
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