SDR1307-121KL - Bourns

SDR1307-121KL Frequently Asked Questions (FAQs)

• What is the recommended PCB layout and land pattern for optimal performance?
  Bourns provides a recommended PCB layout and land pattern in their application notes. It's essential to follow these guidelines to ensure optimal performance, low inductance, and minimal parasitic effects.
• How do I ensure the inductor's magnetic field does not interfere with nearby components?
  To minimize electromagnetic interference (EMI), keep the inductor at least 5 mm away from sensitive components. You can also use shielding techniques, such as copper tape or a mu-metal shield, to contain the magnetic field.
• What is the maximum allowable voltage across the inductor?
  While the datasheet specifies a maximum current rating, it's essential to consider the voltage rating as well. The maximum allowable voltage across the inductor is typically limited by the core material's saturation point, which is around 2-3 times the nominal voltage rating.
• How do I handle the inductor's self-resonant frequency (SRF) in my design?
  The SRF is typically not specified in the datasheet, but it can be estimated using the inductor's inductance and capacitance values. To avoid resonance issues, ensure your operating frequency is below the SRF or use a series resistor to dampen the resonance.
• What is the inductor's thermal derating curve, and how does it affect my design?
  Bourns provides thermal derating curves in their application notes or upon request. The derating curve shows the inductor's current rating reduction as a function of temperature. Ensure you consider the thermal derating curve to avoid overheating and premature failure.