{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4051CIM3X-1.2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4051CIM3X-1.2","canonicalUrl":"https://icboms.com/texas-instruments/LM4051CIM3X-1.2","factsUrl":"https://icboms.com/api/mcp/products/LM4051CIM3X-1.2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4051CIM3X-1.2 precision shunt voltage reference, fixed 1.225V output, ±0.5% tolerance, 50ppm/°C temperature coefficient, 20µVrms noise, SOT-23-3 package, Tape & Reel.","salesMarkdown":"The Texas Instruments LM4051CIM3X-1.2 is a precision shunt voltage reference delivering a fixed 1.225V output with ±0.5% initial tolerance. It is designed for low-power bias and reference applications where a stable voltage rail is needed without a series regulator — the shunt topology sinks current through the cathode to regulate the output, so it behaves like a Zener but with tighter accuracy and lower drift. The 50 ppm/°C temperature coefficient means the output voltage shifts by roughly 61 µV per °C — acceptable for 12-bit ADC references but marginal for 16-bit systems without calibration. The 65 µA minimum cathode current and 12 mA maximum output current cover bias loads. ## Sourcing an obsolete precision reference No official direct replacement is recorded for this order code. ## Package and footprint — SOT-23-3 layout notes The three-pin layout — cathode, anode, and no-connect — matches the standard shunt reference footprint.","metaTitle":"LM4051CIM3X-1.2 Shunt Voltage Reference, ±0.5%, SOT-23-3","metaDescription":"Texas Instruments LM4051CIM3X-1.2 precision shunt reference, 1.225V fixed 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)","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~85°C(TA)","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"50ppm/°C","Voltage - Output (Min/Fixed)":"1.225V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.0400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e499b7cd54f3272232db27a8df268948.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4051CIM3X-1.2/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4051CIM3X-1.2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4051CIM3X-1.2 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}}