The recommended PCB footprint for the SI4900DY-T1-E3 is a 5-pin SOT23 package with a minimum pad size of 0.8mm x 0.8mm and a thermal pad size of 2.5mm x 2.5mm.
To ensure the stability of the output voltage, it is recommended to use a minimum output capacitance of 10uF and a maximum ESR of 1 ohm, and to place the output capacitor as close to the output pin as possible.
The maximum ambient temperature range for the SI4900DY-T1-E3 is -40°C to 125°C, with a maximum junction temperature of 150°C.
Yes, the SI4900DY-T1-E3 is suitable for high-reliability applications, with a failure rate of less than 10 FIT (failures per billion hours) and a MTBF (mean time between failures) of over 100,000 hours.
To protect the SI4900DY-T1-E3 from overvoltage and undervoltage conditions, it is recommended to use a voltage supervisor or a reset IC to monitor the input voltage and reset the device if it falls outside the recommended operating range.
SI4900DY-T1-E3 datasheet
by Vishay Siliconix
