{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DSC6121HI2A-00AET","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"DSC6121HI2A-00AET","canonicalUrl":"https://icboms.com/microchip/DSC6121HI2A-00AET","factsUrl":"https://icboms.com/api/mcp/products/DSC6121HI2A-00AET","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology DSC61XX series MEMS XO (Standard), order code DSC6121HI2A-00AET, dual-output 20 MHz & 25 MHz, CMOS, ±25 ppm, 4-VFLGA package, 1.71V~3.63V supply.","salesMarkdown":"## Dual-frequency MEMS oscillator — what the 20/25 MHz output means for your BOM The DSC6121HI2A-00AET: That means one oscillator can feed a 20 MHz MCU core clock and a 25 MHz Ethernet PHY reference, reducing BOM line count and board area compared to two separate quartz cans. The 3 mA typical supply current (max) keeps the thermal contribution negligible in a dense board layout. CMOS output swings rail-to-rail, so it drives standard logic inputs directly. The 0.89 mm seated height and 1.6 x 1.2 mm footprint fit under a shield can or on a tight mezzanine stack. ## Obsolete — sourcing reality and what to expect For a new design, a pin-compatible MEMS oscillator from the same DSC61XX family with the same dual-output configuration and package is the migration path — but the exact output frequency pair and stability grade must be matched to the BOM. No direct drop-in replacement is guaranteed without verifying the frequency plan.","metaTitle":"Microchip DSC6121HI2A-00AET MEMS XO, 20/25 MHz, Obsolete","metaDescription":"Microchip DSC6121HI2A-00AET MEMS XO, dual-output 20 MHz & 25 MHz, CMOS, ±25 ppm, 4-VFLGA. Obsolete — sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Crystals & Oscillators"],"specifications":{"Mfr":"Microchip Technology","Type":"XO (Standard)","Height":"0.035\\\" (0.89mm)","Output":"CMOS","Series":"DSC61XX","Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"-","Base Resonator":"MEMS","Package / Case":"4-VFLGA","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Size / Dimension":"0.063\\\" L x 0.047\\\" W (1.60mm x 1.20mm)","Voltage - Supply":"1.71V ~ 3.63V","Frequency Stability":"±25ppm","Frequency - Output 1":"20MHz, 25MHz","Frequency - Output 2":"-","Frequency - Output 3":"-","Frequency - Output 4":"-","Operating Temperature":"-40°C~85°C","Current - Supply (Max)":"3mA (Typ)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.1700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/1228b1baf388c49094d52b76abcfca61.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to DSC6121HI2A-00AET?","answer":"A functionally equivalent MEMS oscillator from the same DSC61XX family with the same 4-VFLGA package and dual-output capability may serve as a replacement, but the specific output frequencies (20 MHz and 25 MHz) and ±25 ppm stability must be verified against the BOM requirement."},{"question":"What compliance documentation does Microchip provide for DSC6121HI2A-00AET?","answer":"The part is RoHS-compliant as a standard MEMS oscillator from Microchip. No separate UL or IEC certification is listed for this device. Standard datasheet and PCN documentation are available through Microchip's product page."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/DSC6121HI2A-00AET","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/DSC6121HI2A-00AET when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-19T21:29:37.405Z","lastPublished":"2026-07-19T21:29:37.405Z","indexable":true}}