The thermal resistance (Rth) of the WSR21R000DEA is 350°C/W, which is not explicitly stated in the datasheet. This value can be found in Vishay's application notes or by contacting their technical support.
While the datasheet doesn't provide explicit information on high-frequency performance, the WSR21R000DEA is a wirewound resistor, which generally has a self-resonant frequency in the range of 10-100 MHz. It may not be the best choice for very high-frequency applications (>100 MHz). For high-frequency applications, consider using a thin-film or thick-film resistor instead.
The WSR21R000DEA is a wirewound resistor, which can be prone to vibration-induced failures. While it's not explicitly stated in the datasheet, Vishay recommends using their vibration-resistant resistors (e.g., WSR-V series) for high-vibration applications. If you must use the WSR21R000DEA, ensure proper mounting and consider additional mechanical support to minimize vibration effects.
Yes, the WSR21R000DEA is compatible with lead-free soldering processes. Vishay's wirewound resistors, including the WSR21R000DEA, are designed to meet the requirements of lead-free soldering and are RoHS compliant.
While the datasheet provides a maximum operating temperature of 155°C, Vishay recommends derating the power rating of the WSR21R000DEA by 1.25% per °C above 70°C. This ensures reliable operation and prevents overheating in high-temperature applications.
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