Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number 1N4991US with rapid responses always offered by our staff. To ensure that you locate and procure exactly what you need with ease, we list parts with as much information as we can. For example, part number 1N4991US It is listed as Semiconductor Device Diode. component manufactured by Microsemi Corporation, specifically under CAGE Code 08JA0. It is also accompanied by the NSN 5961016275845 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 5961 Semiconductor Devices and Associated Hardware.