This part is a kind of semiconductor called PR1007G.

Function of this product has FAST RECOVERY RECTIFIERS.

Manufacturers : Compact Technology

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Some of the text within the PDF file :

FAST RECOVERY RECTIFIERS GLASS PASSIVATION JUNCTION FEATURES Fast switching for high efficiency Low cost Glass passivation junction Low reverse leakage current Low forward voltage drop High current capability The plastic material carries UL recognition 94V-0 MECHANICAL DATA Case : JEDEC DO-41 molded plastic Polarity : Color band denotes cathode Weight : 0.012 ounces, 0.34 grams Mounting position : Any PR1001G thru PR1007G REVERSE VOLTAGE - 50 to 1000 Volts FORWARD CURRENT - 1.0 Amperes DO-41 A BA D C DO-41 Dim. Min. Max. A 25.4 B 4.20 5.20 C 0.70 0.90 D 2.00 2.70 All Dimensions in millimeter MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25̺ ambient temperature unless otherwise specified. Single phase, half wave, 60Hz, resistive or inductive load. For capacitive load, dera [ ... ]

PR1007G PDF Datasheet Download