SDR1105-120ML - Bourns

SDR1105-120ML Frequently Asked Questions (FAQs)

• What is the recommended PCB layout and land pattern for the SDR1105-120ML?
  Bourns provides a recommended PCB layout and land pattern in their application note AN204, which can be found on their website. It's essential to follow these guidelines to ensure proper thermal management and to minimize electromagnetic interference (EMI).
• How do I select the correct inductor value for my specific application?
  The selection of the inductor value depends on the specific requirements of your application, including the operating frequency, current rating, and desired impedance. Bourns provides an inductor selection guide on their website, which can help you choose the right inductor value. You can also consult with their application engineers for customized support.
• What is the maximum operating temperature range for the SDR1105-120ML?
  While the datasheet specifies an operating temperature range of -40°C to +125°C, it's essential to note that the inductor's performance may degrade at higher temperatures. For high-reliability applications, it's recommended to derate the inductor's current rating by 1.5% per degree Celsius above 80°C to ensure long-term reliability.
• Can I use the SDR1105-120ML in a high-vibration environment?
  Yes, the SDR1105-120ML is designed to withstand vibrations up to 20 G's, making it suitable for use in harsh environments. However, it's essential to ensure that the PCB is properly secured and that the inductor is properly soldered to prevent mechanical stress and damage.
• How do I ensure the inductor's magnetic field does not interfere with nearby components?
  To minimize electromagnetic interference (EMI), it's recommended to keep the inductor at least 5 mm away from nearby components, and to use shielding or ferrite beads if necessary. You can also consult with Bourns' application engineers for customized EMI mitigation strategies.