Bourns recommends a symmetrical PCB layout with the potentiometer centered between the two end terminals, and the wiper terminal connected to a low-impedance node to minimize noise and ensure stable operation.
To ensure reliable operation in high-vibration environments, Bourns recommends using a secure mounting method, such as screw mounting or adhesive mounting, and ensuring that the potentiometer is properly seated and secured to the PCB.
The maximum allowable torque for the shaft is 1.5 N·cm (13.4 oz·in) for the 3549S-2BA-102 and 2.5 N·cm (22.1 oz·in) for the 3549S-2BA-102B, as specified in the Bourns application note AN164.
The 3549S-2BA-102/102B is rated for operation up to 85°C (185°F), but Bourns recommends derating the potentiometer's power rating and considering the effects of temperature on the device's performance and lifespan.
Bourns recommends cleaning the potentiometer with a soft, dry brush or a lint-free cloth to remove any debris or contaminants. Avoid using chemicals, solvents, or abrasive materials that could damage the device.
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3549S-2BA-102/102B Overview
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