SMP100MC-140 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  STMicroelectronics provides a recommended PCB layout in their application note AN4392, which includes guidelines for thermal pad connection, copper pour, and via placement to ensure optimal thermal performance.
• How do I select the correct input capacitor for the SMP100MC-140?
  The input capacitor selection depends on the input voltage, current, and frequency. A general guideline is to choose a capacitor with a voltage rating of at least 1.5 times the maximum input voltage, and a capacitance value between 1-10uF. Consult the datasheet and application notes for more specific guidance.
• What is the maximum allowed voltage drop across the internal resistance of the SMP100MC-140?
  The maximum allowed voltage drop across the internal resistance (Rds(on)) is typically around 1.5V to 2V, depending on the specific application and operating conditions. Exceeding this limit may lead to reduced performance, increased power dissipation, or even device failure.
• Can I use the SMP100MC-140 in a high-reliability or automotive application?
  Yes, the SMP100MC-140 is qualified for automotive and high-reliability applications. It meets the AEC-Q101 qualification standard and is designed to operate in harsh environments. However, ensure that you follow the recommended operating conditions, and consult with STMicroelectronics or a qualified engineer for specific application guidance.
• How do I protect the SMP100MC-140 from electrostatic discharge (ESD)?
  Handle the device with ESD-protective equipment, such as wrist straps or mats, and follow proper handling and storage procedures. Ensure that the PCB design includes ESD protection components, such as TVS diodes or resistors, to prevent damage from ESD events.