{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC1121AE1-040.0000T","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC1121AE1-040.0000T","canonicalUrl":"https://icboms.com/microchip/DSC1121AE1-040.0000T","factsUrl":"https://icboms.com/api/mcp/products/DSC1121AE1-040.0000T","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC1121AE1-040.0000T, XO (Standard), 40 MHz, CMOS output, ±50 ppm stability, 2.25 V to 3.6 V supply, AEC-Q100, Enable/Disable, 6-SMD package.","salesMarkdown":"## MEMS oscillator for automotive timing The DSC1121AE1-040.0000T is a 40 MHz MEMS-based XO from Microchip's DSC1121 series, delivering a CMOS output with ±50 ppm frequency stability across its -20°C to 70°C operating range. Rated AEC-Q100, this oscillator is qualified for automotive applications — the MEMS resonator provides better shock and vibration tolerance than a quartz crystal, which matters for cabin electronics and infotainment modules that see road vibration. The Enable/Disable function lets the system power down the oscillator output, dropping supply current from 35 mA max to 22 mA max — useful for sleep-mode power budgets in always-on automotive ECUs. ## Package and board layout Housed in a 6-SMD, No Lead Exposed Pad package measuring 7.00 mm x 5.00 mm with a seated height of 0.90 mm — the exposed pad requires a thermal via pattern under the package for proper heat sinking and mechanical stability. Suitable for new designs and production builds. Sourced through independent distribution; quoted to order against the BOM quantity.","metaTitle":"DSC1121AE1-040.0000T MEMS Oscillator 40 MHz CMOS AEC-Q100","metaDescription":"Microchip DSC1121AE1-040.0000T: 40 MHz XO, CMOS output, ±50 ppm stability, 2.25-3.6 V supply, AEC-Q100, Enable/Disable. Active production. Sourced per RFQ.","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":"AEC-Q100","Function":"Enable/Disable","Frequency":"40 MHz","Mounting Type":"Surface Mount","Base Resonator":"MEMS","Package / Case":"6-SMD, No Lead 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":"±50ppm","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":"Is DSC1121AE1-040.0000T a direct replacement for a standard quartz oscillator?","answer":"Yes, it is pin-compatible with standard 6-pin SMD quartz oscillators of the same footprint. The MEMS resonator offers better shock and vibration tolerance, but the electrical interface (CMOS output, supply range, Enable/Disable logic) is the same. Confirm the Enable/Disable logic polarity matches your design — the DSC1121 uses active-low enable by default."},{"question":"Does DSC1121AE1-040.0000T have enable/disable and what is the logic?","answer":"Yes, the Enable/Disable function is standard on this part. The output is enabled when the enable pin is driven low (active-low logic). When disabled, the output goes to high-impedance state, and supply current drops from 35 mA max to 22 mA max."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC1121AE1-040.0000T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC1121AE1-040.0000T 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}}