The thermal resistance of the 40J2K0E is typically around 10°C/W, but this value can vary depending on the specific application and mounting method.
The 40J2K0E 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.
The 40J2K0E 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.
Yes, the 40J2K0E is compatible with lead-free soldering. Ohmite Mfg Co uses a lead-free termination material that meets the requirements of the RoHS directive.
Ohmite recommends derating the 40J2K0E by 1% for every 1°C above 50°C. This means that if you're operating the resistor at 100°C, you should derate its power rating by 50%.
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