SDI65-48-U-P5 - CUI Inc.

SDI65-48-U-P5 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout and thermal management for optimal performance?
  CUI Inc recommends a PCB layout with a solid ground plane and thermal vias to dissipate heat. A minimum of 2oz copper thickness is recommended for the PCB. Additionally, a thermal interface material (TIM) with a thermal conductivity of 1-2 W/m-K should be used between the module and the heat sink.
• How do I ensure reliable start-up and shutdown of the power supply?
  To ensure reliable start-up and shutdown, CUI Inc recommends a soft-start circuit to limit inrush current and a shutdown circuit to prevent voltage spikes. Additionally, a minimum of 10ms delay between power-on and enable signals is recommended.
• What are the EMI filtering requirements for this power supply?
  CUI Inc recommends using a combination of common-mode and differential-mode EMI filters to meet the relevant EMI standards (e.g., EN55022, FCC Part 15). The filter design should be optimized for the specific application and layout.
• Can I use this power supply in a high-altitude or high-temperature environment?
  The SDI65-48-U-P5 is rated for operation up to 5,000 meters (16,400 ft) and 40°C ambient temperature. For higher altitudes or temperatures, derating or custom design may be required. Consult with CUI Inc for specific guidance.
• What is the MTBF (Mean Time Between Failures) of this power supply?
  The MTBF of the SDI65-48-U-P5 is calculated to be approximately 1.5 million hours at 25°C ambient temperature, based on MIL-HDBK-217F calculations. However, actual MTBF may vary depending on the application and operating conditions.