NXP recommends a thermal pad on the bottom of the package, connected to a large copper area on the PCB to dissipate heat efficiently. A minimum of 2oz copper thickness is recommended.
To ensure reliable operation at high temperatures, it's essential to follow the recommended thermal design and layout guidelines, and to derate the device's power dissipation according to the temperature derating curve provided in the datasheet.
The maximum allowed voltage on the input pins is 5.5V, which is the absolute maximum rating. However, for reliable operation, it's recommended to keep the input voltage within the recommended operating range of 4.5V to 5.5V.
The PMMT491A,215 is not hermetically sealed, so it's not recommended for use in high-humidity environments. If you need to operate the device in a humid environment, consider using a conformal coating or potting the device to protect it from moisture.
NXP recommends storing the PMMT491A,215 in a dry, cool place, away from direct sunlight and moisture. The recommended storage temperature range is -40°C to 125°C, and the recommended storage humidity is <60% RH.
PMMT491A,215 datasheet
by NXP Semiconductors
