Part Numbering Numbering breakdowns, Suffix Information, and Part Number comparisions. SiTime Programmable Oscillators SiTime MEMS oscillators arrive at Digi-Key as unprogrammed, blank parts. Every SiTime part number corresponds to a unique oscillator configuration which we use to program the parts as orders come in. There are billions of valid SiTime part numbers, but we list only a small subset of them on our website. If you would like to order a valid SiTime part number not currently listed, let us know here and we will get it added ASAP! Part Identification Get help identifying a part by pictures, markings, or specification here. FAQs A collection of FAQs curated by our technical staff. Tech Tips Tips and suggestions for finding and working with electronic components. Linux Discussions Welcome to the Linux discussion area. This is the place for all Linux questions and development that are not covered in the eewiki Linux guides category. Cross Reference Product Crosses and Alternative suggestions.