LQH43MN390K03L - Murata Electronics

LQH43MN390K03L Frequently Asked Questions (FAQs)

• What is the recommended land pattern for LQH43MN390K03L?
  The recommended land pattern for LQH43MN390K03L is a rectangular pad with a size of 3.5mm x 2.5mm, with a non-solder mask defined (NSMD) pad shape. The pad should be centered on the component and have a solder mask opening of 2.5mm x 1.5mm.
• How do I handle the LQH43MN390K03L's sensitivity to soldering temperature?
  To minimize the risk of damage, it's recommended to follow the recommended soldering temperature profile: 260°C (max) for 10 seconds (max) with a peak temperature of 240°C. Avoid using excessive soldering temperatures or prolonged exposure to high temperatures.
• What is the maximum current rating for LQH43MN390K03L?
  The maximum current rating for LQH43MN390K03L is 3.9A. However, it's essential to consider the inductor's temperature rise and derating factors when designing the circuit to ensure reliable operation.
• Can I use the LQH43MN390K03L in a high-frequency application?
  While the LQH43MN390K03L is suitable for high-frequency applications, its performance may degrade above 100 MHz. For frequencies above 100 MHz, consider using a more suitable inductor with a higher self-resonant frequency (SRF).
• How do I ensure the LQH43MN390K03L is properly secured to the PCB?
  To ensure the LQH43MN390K03L is properly secured to the PCB, use a suitable adhesive, such as a silicone-based adhesive, and follow the recommended mounting procedure. Additionally, consider using a mechanical fixation method, like a clip or a bracket, to prevent the inductor from shifting during assembly or operation.