The B_S-1WR3 is a 1W isolated module power supply from MORNSUN Science & Technology Ltd. It is part of the B_S-1WR3 series and does not have any specific features listed. The package size is 0.46" L x 0.24" W x 0.40" H (11.6mm x 6.0mm x 10.2mm) and it is designed for ITE (Commercial) applications. With a voltage isolation of 3 kV, this power supply has a single output with a maximum current of 200mA. The input voltage range is 4.5V to 5.5V, and the output voltage is 5V. The efficiency of this power supply is 82% and it is mounted through hole. It comes in a 4-SIP module package and has a temperature range of -40°C to 105°C (With Derating). The B_S-1WR3 is an active product with CE and cURus approval.