This part is a kind of semiconductor called S1M.

Function of this product has 1.0 Ampere General Purpose Rectifiers.

Manufacturers : Fairchild Semiconductor

Image and pinout :

Some of the text within the PDF file :

S1A-S1M Discrete POWER & Signal Technologies S1A - S1M 0.181 (4.597) 0.157 (3.988) 0.062 (1.575) 0.055 (1.397) 0.114 (2.896) 0.098 (2.489) Features • • Low profile package. Glass passivated junction. 2 1 0.208 (5.283) 0.188 (4.775) SMA/DO-214AC COLOR BAND DENOTES CATHODE 0.096 (2.438) 0.078 (1.981) 0.060 (1.524) 0.030 (0.762) 0.008 (0.203) 0.004 (0.102) 0.012 (0.305) 0.006 (0.152) 1.0 Ampere General Purpose Rectifiers Absolute Maximum Ratings* Symbol IO if(surge) PD RθJA Tstg TJ TA = 25°C unless otherwise noted Parameter Average Rectified Current @ TA = 100°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, Junction to Ambient ** Storage Temperature Range Ope [ ... ]

S1M PDF Datasheet Download