The recommended land pattern for the CR0402-FX-3920GLF is a rectangular pad with a size of 0.5 mm x 0.25 mm, with a non-solder mask defined (NSMD) pad shape. This ensures proper soldering and minimizes the risk of solder bridging.
The CR0402-FX-3920GLF is rated for operation up to 150°C, but it's recommended to derate the power rating by 50% when operating above 125°C. For high-temperature applications, consider using a high-temperature-rated resistor like the CR0402-FX-3920HLF, which is rated up to 200°C.
Handle the CR0402-FX-3920GLF by the edges to prevent damage to the termination. Avoid touching the resistor body or terminations, as the oils from human skin can cause soldering issues. Use anti-static wrist straps or mats to prevent electrostatic discharge (ESD) damage.
The CR0402-FX-3920GLF is rated for operation in environments with relative humidity up to 85% at 85°C. However, it's recommended to use a moisture-resistant coating or conformal coating to protect the resistor from moisture ingress in high-humidity applications.
The recommended soldering profile for the CR0402-FX-3920GLF is a peak temperature of 260°C, with a dwell time of 3-5 seconds. Use a solder with a melting point of 217°C to 221°C, and ensure the soldering iron is set to a temperature of 250°C to 270°C.
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CR0402-FX-3920GLF Overview
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