This part is a kind of semiconductor called 1N4001.

Function of this product has 1.0A Standard Recovery Rectifier.

Manufacturers : NTE

Image and pinout :

Some of the text within the PDF file :

1N4001 thru 1N4007 1.0A Standard Recovery Rectifier Features: • Diffused Junction • Low Forward Voltage Drop • High Current Capability • High Surge Current Capability • RoHS Compliant Mechanical Data: • Case: DO−41, Molded Plastic • Terminals: Plated Leads Solderable per MIL−STD−202, Method 208 • Polarity: Cathode Band • Weight: 0.35 grams (approx.) • Mounting Position: Any • Marking: Type Number Absolute Maximum Ratings and Electrical Characteristics: (TA = +25°C, unless otherwise specified) Peak Repetitive Voltage, VRRM Working Peak Reverse Voltage, VRWM DC Blocking Voltage, VR 1N4001 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [ ... ]

1N4001 PDF Datasheet Download