This part is a kind of semiconductor called 1N4007.
Function of this product has Axial Lead Standard Recovery Rectifiers.
Manufacturers : MotorolaInc
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Some of the text within the PDF file :
MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by 1N4001/D Axial Lead Standard Recovery Rectifiers This data sheet provides information on subminiature size, axial lead mounted rectifiers for general–purpose low–power applications. Mechanical Characteristics • Case: Epoxy, Molded • Weight: 0.4 gram (approximately) • Finish: All External Surfaces Corrosion Resistant and Terminal Leads are Readily Solderable • Lead and Mounting Surface Temperature for Soldering Purposes: 220°C Max. for 10 Seconds, 1/16″ from case • Shipped in plastic bags, 1000 per bag. • Available Tape and Reeled, 5000 per reel, by adding a “RL” suffix to the part number • Polarity: Cathode Indicated by Polarity Band • Marking: 1N4001, 1N4002, 1N4003, 1N4004, 1N4005, 1N4006, 1N4007 [ ... ]