{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1121AE5-041.5000T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1121AE5-041.5000T","canonicalUrl":"https://icboms.com/microchip/DSC1121AE5-041.5000T","factsUrl":"https://icboms.com/api/mcp/products/DSC1121AE5-041.5000T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC1121 series, XO (Standard) MEMS oscillator, 41.5 MHz, CMOS output, ±10 ppm frequency stability, 2.25V ~ 3.6V supply, 6-VDFN exposed pad package, tape and reel","salesMarkdown":"## 41.5 MHz MEMS clock — why the resonator type matters for your BOM The DSC1121AE5-041.5000T is a 41.5 MHz XO (Standard) oscillator built on a MEMS resonator rather than a quartz crystal — the MEMS structure gives it better immunity to shock and vibration than a quartz-based can, and the supply range spans 2.25V to 3.6V so it runs off a single 2.5V or 3.3V rail without an extra regulator. ## Active lifecycle — no last-time-buy pressure on this line item The MEMS resonator fabrication means lead times tend to be shorter than quartz equivalents because the die is sourced from a standard CMOS fab flow, not a quartz crystal lot — a sourcing advantage when the BOM calls for a tight ±10 ppm window. ## Surface-mount footprint and temperature range Housed in a 6-VDFN exposed pad package measuring 7.00 mm x 5.00 mm with a seated height of 0.90 mm, the DSC1121AE5-041.5000T fits the standard 7x5 mm oscillator footprint — the exposed pad needs a thermal via pattern under the package to pull heat from the MEMS die into the board copper.","metaTitle":"DSC1121AE5-041.5000T MEMS Oscillator 41.5 MHz CMOS ±10 ppm","metaDescription":"Microchip DSC1121AE5-041.5000T XO (Standard) MEMS oscillator, 41.5 MHz, CMOS output, ±10 ppm stability, 2.25V-3.6V supply.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Crystals & Oscillators"],"specifications":{"Mfr":"Microchip Technology","Type":"XO (Standard)","Output":"CMOS","Series":"DSC1121","Package":"Tape & Reel (TR)","Ratings":"-","Function":"Enable/Disable","Frequency":"41.5 MHz","Mounting Type":"Surface Mount","Base Resonator":"MEMS","Package / Case":"6-VDFN Exposed Pad","Product Status":"Active","lifecycle_stage":"eol_hot","Size / Dimension":"0.276\\\" L x 0.197\\\" W (7.00mm x 5.00mm)","Voltage - Supply":"2.25V ~ 3.6V","Base Product Number":"DSC1121","Frequency Stability":"±10ppm","Height - Seated (Max)":"0.035\\\" (0.90mm)","Operating Temperature":"-20°C ~ 70°C","Current - Supply (Max)":"35mA","Absolute Pull Range (APR)":"-","Spread Spectrum Bandwidth":"-","Current - Supply (Disable) (Max)":"22mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4ad75d2f22fe92055f4a953b00c76a2c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How does the DSC1121AE5-041.5000T differ from a standard quartz oscillator at the same frequency?","answer":"The key difference is the resonator material: the DSC1121 uses a MEMS resonator instead of a quartz crystal. MEMS oscillators typically offer better shock and vibration tolerance, faster start-up, and shorter factory lead times because the die is produced on a standard CMOS line. The ±10 ppm frequency stability is comparable to a good quartz XO, but the MEMS part avoids the long crystal aging drift that some quartz oscillators exhibit."},{"question":"What is the frequency stability of the DSC1121AE5-041.5000T?","answer":"The rated frequency stability is ±10 ppm over the operating temperature range of -20°C to 70°C. This is tight enough for most Ethernet PHY and MCU clock applications that require a precise reference."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1121AE5-041.5000T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1121AE5-041.5000T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}