PEM2-S5-D5-S - CUI Inc.

PEM2-S5-D5-S Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  CUI recommends a PCB layout with a large copper area underneath the module to dissipate heat effectively. A minimum of 1 oz copper thickness is recommended, and the copper area should be connected to a solid ground plane to reduce thermal resistance.
• How do I ensure reliable soldering of the module?
  CUI recommends using a soldering iron with a temperature range of 250°C to 260°C, and a solder with a melting point of 180°C to 190°C. The module should be soldered within 3 seconds to 5 seconds, and the solder joints should be inspected for proper wetting and filleting.
• What is the maximum allowable voltage derating for this module?
  CUI recommends derating the input voltage by 10% to 15% to ensure reliable operation and to prevent overvoltage stress on the internal components.
• How do I troubleshoot output voltage deviations?
  To troubleshoot output voltage deviations, check the input voltage, output load, and ambient temperature. Ensure that the input voltage is within the specified range, the output load is within the recommended range, and the ambient temperature is within the specified operating range. Also, verify that the module is properly soldered and that there are no signs of physical damage or component failure.
• What is the recommended input capacitor value and type?
  CUI recommends using a low-ESR ceramic capacitor with a value of 10 μF to 22 μF, and a voltage rating of 25 V or higher. The capacitor should be placed as close as possible to the input pins of the module to minimize noise and ripple.