This part is a kind of semiconductor called 2A05.

Function of this product has 2.0A RECTIFIER.

Manufacturers : Diodes Incorporated

Image and pinout :

Some of the text within the PDF file :

2A01 - 2A07 2.0A RECTIFIER Features · · · · Diffused Junction High Current Capability and Low Forward Voltage Drop Surge Overload Rating to 70A Peak Plastic Material - UL Flammability Classification 94V-0 A B A Mechanical Data · · · · · Case: Molded Plastic Terminals: Plated Leads Solderable per MIL-STD-202, Method 208 Polarity: Cathode Band Weight: 0.4 grams (approx) Marking: Type Number DO-15 Dim A B C D Min 25.40 5.50 0.686 2.60 D C Max 7.62 0.889 3.6 All Dimensions in mm Maximum Ratings and Electrical Characteristics Single phase, half wave, 60Hz, resistive or inductive load. For capacitive load, derate current by 20%. Characteristic Peak Repetitive Reverse Voltage Working Peak Reverse Voltage DC Blocking Voltage RMS Reverse Voltage Average Rectified Output Curren [ ... ]

2A05 PDF Datasheet Download