{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4051BIM3X-1.2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4051BIM3X-1.2","canonicalUrl":"https://icboms.com/texas-instruments/LM4051BIM3X-1.2","factsUrl":"https://icboms.com/api/mcp/products/LM4051BIM3X-1.2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4051 series precision shunt voltage reference, fixed 1.225V output, ±0.2% tolerance, 50ppm/°C, 12 mA output, 65 µA cathode current, SOT-23-3 package, industrial temperature range.","salesMarkdown":"## 1.225V fixed output with ±0.2% tolerance The 20 µVrms noise spec (10 Hz to 10 kHz) is clean enough for 12-bit ADC references and precision comparator thresholds in industrial control and instrumentation. ## Current ratings and bias requirements The shunt reference sinks up to 12 mA of output current — enough to bias a handful of op-amp inputs or a low-power ADC reference input. Below 65 µA the reference may drop out of regulation; above 12 mA the device dissipates excess power as heat. The SOT-23-3 package has limited thermal mass. ## SOT-23-3 rework and board fit The small body and low thermal mass make it easy to hand-rework with hot air. No exposed pad, so no thermal-via requirement under the part.","metaTitle":"LM4051BIM3X-1.2 Shunt Voltage Reference, 1.225V ±0.2%","metaDescription":"Obsolete LM4051BIM3X-1.2 precision shunt voltage reference. Fixed 1.225V output, ±0.2% 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":"±0.2%","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":"$1.2800","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e499b7cd54f3272232db27a8df268948.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4051BIM3X-1.2/alternatives.json"},"ai":{"faq":[{"question":"Can LM4051BIM3X-1.2 be used in new designs?","answer":"No — the part is obsolete and no longer in production. New designs should select an active shunt reference from the LM4041 or LM4050 series with the same 1.225V output and SOT-23-3 package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4051BIM3X-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/LM4051BIM3X-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}}