This part is a kind of semiconductor called IN4748A.

Function of this product has 1.0W ZENER DIODE.

Manufacturers : MAYLOON ELECTRONIC

Image and pinout :

Some of the text within the PDF file :

ऍໜႝηԖज़Ϧљ MAYLOON ELECTRONIC CO., LTD., SINLOON® 䏈ᚘԲᄕጥ Voltage Range: 3.3V ~ 100V DO-41 Type : IN4728A ~ IN4764A 1.0W ZENER DIODE Figure: ϭ FEATURE: Low Inductance 图 1.0 Watt Power Dissipation 图 ̈́5% Standard Vz Tolerance 图 Glass Passivated Die Construction 图 3.3V ~ 100V Nominal Zener Diode 图 Typical IR Less Than 5.0ӴA Above 11V 图 Plastic Case Material Has UL Flammability Classification Rating 94V-0 图 ϭ MECHANICAL CHARACTERISTICS: Case: DO-41 Molded Plastic 图 Polarity: Cathode Band 图 Marking: Type Number 图 Weight: 0.35 grams (approx) 图 Terminals: Axial Leads, Solderable per MIL-STD-202, Method 208. 图 Lead Free: For RoHS / Lead Free Version. Add “-LF” Suffix to part Number, 图 ϭ DIMENSION: DO-41 Type (mm) Dim Min Max A 25.4 --B 4.0 [ ... ]

IN4748A PDF Datasheet Download