42J125E - Ohmite

42J125E Frequently Asked Questions (FAQs)

• What is the thermal resistance of the 42J125E?
  The thermal resistance of the 42J125E is typically around 10°C/W, but this value can vary depending on the specific application and mounting method.
• Is the 42J125E suitable for high-frequency applications?
  The 42J125E is a wirewound resistor, which can exhibit significant inductance at high frequencies. It's not recommended for high-frequency applications above 100 kHz. For high-frequency applications, consider using a thin-film or metal-film resistor instead.
• Can I use the 42J125E in a high-vibration environment?
  The 42J125E is designed to withstand moderate vibration, but it's not suitable for extreme vibration environments. If you need a resistor for a high-vibration application, consider using a resistor with a more robust construction, such as a ceramic or metal-cased resistor.
• Is the 42J125E compatible with lead-free soldering?
  Yes, the 42J125E is compatible with lead-free soldering. Ohmite Mfg Co uses a lead-free termination material that meets the requirements of the RoHS directive.
• What is the recommended derating curve for the 42J125E?
  The recommended derating curve for the 42J125E is typically 1.5% per °C above 25°C. This means that for every 1°C increase in temperature above 25°C, the resistor's power rating should be reduced by 1.5%.