This part is a kind of semiconductor called RS204.

Function of this product has 2.0AMP Single Phase Bridge Rectifiers.

Manufacturers : SeCoS

Image and pinout :

Some of the text within the PDF file :

RS201 THRU RS207 Elektronische Bauelemente VOLTAGE 50V ~ 1000V 2.0AMP Single Phase Bridge Rectifiers RoHS Compliant Product A suffix of “-C” specifies halogen-free. RS-2 FEATURES * Ideal for printed circuit board * Low forward voltage * Low leakage current * Polarity: marked on body * Mounting position: Any * Weight: 2.74 grams .510(13.0) .472(12.0) .035(0.9) .028(0.7) DIA. .50 (12.7) MIN. .730(18.5) .690(17.5) .160(4.1) .140(3.6) SPACING .260(6.5) .240(6.1) .125 (3.2) Dimensions in inches and (millimeters) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Rating 25 C ambient temperature unless otherwise specified. Single phase half wave, 60Hz, resistive or inductive load. For capacitive load, derate current by 20%. TYPE NUMBER Maximum Recurrent Peak Reverse Voltage Maxim [ ... ]

RS204 PDF Datasheet Download