This part is a kind of semiconductor called 2W10G.

Function of this product has 2.0 Ampere Glass Passivated Bridge Rectifiers.

Manufacturers : Fairchild Semiconductor

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Some of the text within the PDF file :

2W005G - 2W10G Discrete POWER & Signal Technologies 2W005G - 2W10G 0.358(9.1) DIA 0.339(8.6) Features • • • • Glass passivated junction. Ideal for printed circuit board. Reliable low cost construction technique results in inexpensive product. High surge current capability. 1.2(30.5) MIN 1.0(25.4) MIN 0.217(5.5) 0.197(5.0) Dimensions are in: inches (mm) 0.032(.81) DIA 0.030(.76) WOB POS.LEAD + ~ ~ _ 0.220(5.6) 0.180(4.6) 0.220(5.6) 0.180(4.6) 2.0 Ampere Glass Passivated Bridge Rectifiers Absolute Maximum Ratings* Symbol IO if(surge) TA = 25°C unless otherwise noted Parameter Average Rectified Current @ TA = 50°C Peak Forward Surge Current 8.3 ms single half-sine-wave Superimposed on rated load (JEDEC method) Total Device Dissipation Derate above 25°C Thermal Resistance [ ... ]

2W10G PDF Datasheet Download