{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ECS-2033-120-BN","brand":"ECS Inc.","brandSlug":"ecs-inc","productSlug":"ECS-2033-120-BN","canonicalUrl":"https://icboms.com/ecs-inc/ECS-2033-120-BN","factsUrl":"https://icboms.com/api/mcp/products/ECS-2033-120-BN","rawCanonicalId":null},"summary":{"shortDescription":"ECS Inc. ECS-2033 XO oscillator, 12 MHz, CMOS output, 3.3 V supply, ±50 ppm, 4-SMD 2.50 x 2.00 x 0.90 mm, Enable/Disable function, Active.","salesMarkdown":"## ±50 ppm stability and what it costs in timing budget The ECS-2033-120-BN: For a UART clocking a 115200 baud link, that drift sits comfortably inside the ±2 % baud-rate tolerance most UARTs spec. For a USB PHY reference, the tolerance is tighter than USB Full-Speed allows on its own — the oscillator would need a PLL or spread-spectrum clock to meet USB spec, since USB requires ±500 ppm at the host. ## Current draw — active and disabled Maximum supply current is 7 mA when the oscillator is running, and drops to 10 µA when disabled — so shutting down the reference eliminates essentially all the quiescent draw. For a battery-powered node that wakes periodically and needs a clean clock during activity, the enable/disable pin is the primary power-control lever; the 10 µA disabled current is low enough to leave the oscillator permanently in the disabled state between wake cycles rather than removing the supply rail entirely. ## 2.50 × 2.00 mm ultra-thin package The 4-SMD no-lead package seats at 0.90 mm max height — the thin profile suits portable or handheld hardware where vertical clearance is constrained. No-lead construction means the GND pads sit flush to the board, which helps thermal dissipation to the pad plane but requires a reflow profile with a flat soak to avoid tombstoning on the small pad geometry. Tape-and-reel and cut-tape packaging options are both listed, so the part handles both high-volume SMT assembly and low-quantity prototype reel.","metaTitle":"ECS-2033-120-BN 12 MHz CMOS Oscillator, 3.3 V","metaDescription":"ECS-2033-120-BN XO oscillator, 12 MHz CMOS output, 3.3 V supply, ±50 ppm stability, -40°C to 85°C, Active lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Crystals & Oscillators"],"specifications":{"Mfr":"ECS Inc.","Type":"XO (Standard)","Output":"CMOS","Series":"ECS-2033","Package":"Tape & Reel (TR); Cut Tape (CT)","Ratings":"-","Function":"Enable/Disable","Frequency":"12 MHz","Mounting Type":"Surface Mount","Base Resonator":"Crystal","Package / Case":"4-SMD, No Lead","Product Status":"Active","lifecycle_stage":"unknown","Size / Dimension":"0.098\\\" L x 0.079\\\" W (2.50mm x 2.00mm)","Voltage - Supply":"3.3V","Frequency Stability":"±50ppm","Height - Seated (Max)":"0.035\\\" (0.90mm)","Operating Temperature":"-40°C~85°C","Current - Supply (Max)":"7mA","Absolute Pull Range (APR)":"-","Spread Spectrum Bandwidth":"-","Current - Supply (Disable) (Max)":"10µA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.9600","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/da93a721b0c344580e23e501f58f216a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/ECS-2033-120-BN/alternatives.json"},"ai":{"faq":[{"question":"What does the Enable/Disable function actually do in a circuit?","answer":"The enable pin gates the output without removing the 3.3 V supply. When disabled the output goes high-Z and current drops to 10 µA max; when re-enabled the oscillator starts and settles within the specified stability band. This is the standard power-control pattern for clocking domains that need to be dropped in sleep modes without a full rail toggle."},{"question":"Can I use the 12 MHz CMOS output directly as a USB Full-Speed reference clock?","answer":"No — the ±50 ppm frequency stability of this oscillator does not meet USB Full-Speed timing requirements, which demand ±500 ppm at the device level. A USB crystal or TCXO with tighter stability is required for USB Full-Speed operation without PLL compensation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/ecs-inc/ECS-2033-120-BN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/ecs-inc/ECS-2033-120-BN 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}}