This part is a kind of semiconductor called UM2024.

Function of this product has 2 Watt DC-DC Converters.

Manufacturers : UMEC INTERNATIONAL

Image and pinout :

Some of the text within the PDF file :

UM2000 SERIES 2 Watt DC-DC Converters ♦ 24-Pin Dip Package ♦ High Efficiency (up to 80%) ♦ Regulated Outputs ♦ Pi Input Filter ♦ 500 VDC Isolation ♦ Continuous Short Circuit Protection SPECIFICATIONS All specifications are typical at nominal line full load, and 25°C unless otherwise noted. INPUT SPECIFICATIONS Input Voltage Range .…………….……….. 5V … 4.5-5.5V 12V ……. 9-18V 24V ……... 18-36V 48V ……... 36-72V Input Filter ……..…………………………...……... Pi Network OUTPUT SPECIFICATIONS Voltage Accuracy .…………….…….……….….. ±2.0% max. 1 Voltage Balance (Dual) ……….………...…... ±2.0% max. Ripple and Noise, 20MHz BW .………..…... 60mV P-P max. Temperature Coefficient .……………… [ ... ]

UM2024 PDF Datasheet Download