OK4725E - Ohmite

OK4725E Frequently Asked Questions (FAQs)

• What is the thermal resistance of the OK4725E?
  The thermal resistance of the OK4725E is not explicitly stated in the datasheet, but according to Ohmite's application notes, the thermal resistance (RθJA) is approximately 10°C/W for the OK4725E.
• Can I use the OK4725E in a high-vibration environment?
  While the OK4725E is a ruggedized resistor, it's essential to ensure proper mounting and securing to prevent damage from vibration. Ohmite recommends following their mounting guidelines and consulting with their application engineers for specific vibration requirements.
• Is the OK4725E suitable for high-altitude applications?
  The OK4725E is designed to operate up to 10,000 feet (3,048 meters) above sea level. For applications above this altitude, Ohmite recommends consulting with their application engineers to determine the suitability of the OK4725E or alternative products.
• Can I use the OK4725E in a humid or wet environment?
  The OK4725E has a moisture sensitivity level (MSL) of 1, which means it can withstand normal humidity levels. However, for applications in extremely humid or wet environments, Ohmite recommends applying a conformal coating or using a sealed resistor to prevent moisture ingress.
• What is the recommended soldering profile for the OK4725E?
  Ohmite recommends following the IPC J-STD-020D.1 standard for soldering the OK4725E. The recommended soldering profile is: peak temperature of 260°C (500°F), with a dwell time of 10-30 seconds above 217°C (422°F).