This part is a kind of semiconductor called DDA-003.

Function of this product has 36Watts 24V Output External Adapter.

Manufacturers : YCL

Image and pinout :

Some of the text within the PDF file :

36Watts 24V Output External Adapter DDA-003 Feature: l l l UL safety meet. EMI/RFI meet VDE & FCC limit B. 2 Year Warranty. Specifications: typical at nominal line, full load at 25°C. Input Specifications: General Specifications: Input voltage: Input current: Output Rating: 36V to 72 Vdc 0.94A at 48 Vdc +24V/1.5A Efficiency: 80% typical at full load EMI/RFI: VDE & FCC Class B limits Input/output: 1500Vdc UL UL1950 Output Specifications: (at -48Vdc Input) Dielectric Withstand: Line Regulation: ± 1% Load Regulation: ± 3% (Full to Half Load) Temperature Coefficient: ± 0.05% / ° C Ripple & Noise: 100mVP-P max ¬¬See the picture Protections: a. Over voltage protection. a. Over power protection. b. Short circuit protection. c. Input Reverse protection. ¬Safety Meet: http://www.DataShee [ ... ]

DDA-003 PDF Datasheet Download