1239AS-H-4R7M=P2 - Murata Electronics

1239AS-H-4R7M=P2 Frequently Asked Questions (FAQs)

• What is the recommended land pattern for this inductor?
  The recommended land pattern for the 1239AS-H-4R7M=P2 inductor is a rectangular pad with a size of 1.2mm x 1.4mm, with a non-solder mask defined (NSMD) pad shape.
• How do I handle the inductor's thermal considerations?
  The 1239AS-H-4R7M=P2 inductor has a maximum operating temperature of 125°C. Ensure good airflow around the component, and consider using a heat sink or thermal pad if the inductor will be operating near its maximum current rating.
• What is the inductor's self-resonant frequency (SRF)?
  The self-resonant frequency (SRF) of the 1239AS-H-4R7M=P2 inductor is approximately 250 MHz. This is the frequency at which the inductor's impedance is at its maximum.
• Can I use this inductor in a high-reliability application?
  Yes, the 1239AS-H-4R7M=P2 inductor is suitable for high-reliability applications. It is built with a robust construction and has undergone rigorous testing to ensure its reliability in demanding environments.
• How do I determine the inductor's saturation current?
  The saturation current of the 1239AS-H-4R7M=P2 inductor can be determined by consulting the inductor's datasheet and application notes. A general rule of thumb is to limit the peak current to 70-80% of the inductor's rated current to avoid saturation.