{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4051CEM3-1.2/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4051CEM3-1.2-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM4051CEM3-1.2-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM4051CEM3-1.2%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4051CEM3-1.2/NOPB precision shunt voltage reference, fixed 1.225V output, ±0.5% tolerance, 50ppm/°C tempco, 12 mA output, SOT-23-3, -40°C to 125°C.","salesMarkdown":"## Key ratings for the BOM decision The fixed 1.225V output eliminates the need for external resistor dividers in a shunt configuration, simplifying the BOM. The ±0.5% tolerance and 50 ppm/°C drift together keep the reference voltage within 1% over temperature — adequate for 8- to 12-bit ADC references and comparator thresholds. Maximum cathode current is 65 µA, which sets the lower bound on the series resistor for a given supply rail. Housed in a SOT-23-3 package, the LM4051CEM3-1.2/NOPB shares the same three-pin footprint as many other shunt references in the LM4051 family, easing layout reuse.","metaTitle":"LM4051CEM3-1.2/NOPB Shunt Voltage Reference, 1.225V ±0.5%","metaDescription":"Texas Instruments LM4051CEM3-1.2/NOPB precision shunt reference, fixed 1.225V output, ±0.5% tolerance, 50ppm/°C drift, SOT-23-3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±0.5%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Obsolete","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"12 mA","Current - Supply":"-","Current - Cathode":"65 µA","Base Product Number":"LM4051","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"20µVrms","Operating Temperature":"-40°C~125°C(TA)","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"50ppm/°C","Voltage - Output (Min/Fixed)":"1.225V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e499b7cd54f3272232db27a8df268948.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4051CEM3-1.2%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"What is the accuracy of LM4051CEM3-1.2/NOPB?","answer":"Initial tolerance is ±0.5%, and the temperature coefficient is 50 ppm/°C."},{"question":"Can I use LM4051CEM3-1.2/NOPB in a 1.2V reference circuit?","answer":"Yes, the fixed 1.225V output is the standard 1.2V-class reference. It is a shunt reference, so it requires an external series resistor from the supply to the cathode pin; the cathode current must be kept above 65 µA for regulation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4051CEM3-1.2-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4051CEM3-1.2-NOPB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}