BLM18BD421BH1D - Murata Electronics

BLM18BD421BH1D Frequently Asked Questions (FAQs)

• What is the recommended land pattern for the BLM18BD421BH1D?
  The recommended land pattern for the BLM18BD421BH1D 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 clearance of 0.2mm.
• How do I handle the BLM18BD421BH1D's sensitivity to soldering temperature?
  To minimize the risk of damage, it's recommended to follow the recommended soldering temperature profile, which is 260°C for 10 seconds or less. Avoid using excessive soldering temperatures or prolonged exposure to high temperatures, as this can cause damage to the inductor's internal structure.
• What is the maximum allowable DC current for the BLM18BD421BH1D?
  The maximum allowable DC current for the BLM18BD421BH1D is 1.8A. Exceeding this current may cause the inductor to overheat, leading to reduced performance or even failure.
• Can I use the BLM18BD421BH1D in a high-frequency application?
  Yes, the BLM18BD421BH1D is suitable for high-frequency applications up to 1GHz. However, it's essential to consider the inductor's self-resonant frequency (SRF) and ensure that it does not resonate at the operating frequency, which can cause unwanted effects.
• How do I ensure the BLM18BD421BH1D is properly secured to the PCB?
  To ensure the BLM18BD421BH1D 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, such as a clip or a bracket, to prevent the inductor from shifting or vibrating during operation.