The recommended land pattern for the WW5JB3R90 can be found in the Stackpole Electronics Inc. application note AN-120, which provides detailed guidelines for PCB layout and land pattern design.
To minimize high frequency noise and EMI, it's recommended to use a ground plane under the resistor, keep the leads as short as possible, and use a shielded cable or a ferrite bead to filter out high frequency noise.
The WW5JB3R90's power rating is derated at high temperatures. According to the datasheet, the power rating is 5W at 70°C, 3.5W at 85°C, and 2.5W at 100°C. It's essential to consider the operating temperature when selecting the resistor for your application.
The WW5JB3R90 is designed to withstand moderate vibration levels. However, for high-vibration environments, it's recommended to use a resistor with a more robust construction, such as the WW5JB3R90-HV, which is specifically designed for high-vibration applications.
The WW5JB3R90 can be soldered using a standard reflow soldering process. The recommended soldering temperature is 260°C (500°F) for 10-15 seconds. It's essential to follow the recommended soldering profile to avoid damaging the resistor.
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