{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4051BEM3-1.2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4051BEM3-1.2","canonicalUrl":"https://icboms.com/texas-instruments/LM4051BEM3-1.2","factsUrl":"https://icboms.com/api/mcp/products/LM4051BEM3-1.2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4051BEM3-1.2, precision shunt voltage reference, fixed 1.225 V output, ±0.2% tolerance, 50 ppm/°C temperature coefficient, 12 mA output, SOT-23-3 package, -40°C to 125°C.","salesMarkdown":"The LM4051BEM3-1.2 is a precision shunt voltage reference from Texas Instruments delivering a fixed 1.225 V output with ±0.2% initial tolerance. As a shunt (two-terminal) reference, it behaves like a Zener diode — a series resistor sets the bias current from the supply, and the reference regulates by shunting current to ground. The 12 mA maximum cathode current defines the load-driving ceiling and the minimum resistor value needed to keep the device in regulation across the supply range. ## Temperature drift and noise — precision-grade stability A temperature coefficient of 50 ppm/°C means the output voltage shifts by 61 µV per degree Celsius — tight enough for 12-bit ADC references in industrial control loops. The 20 µVrms noise (10 Hz to 10 kHz) is low enough that external filtering is optional for most 10- to 12-bit systems. ## NRND status — plan the BOM transition It remains available for existing production runs and repairs, but new designs should evaluate a pin-compatible successor before committing the BOM.","metaTitle":"LM4051BEM3-1.2 Shunt Voltage Reference, 1.225 V, ±0.2%","metaDescription":"LM4051BEM3-1.2 precision shunt reference: 1.225 V fixed output, ±0.2% tolerance, 50 ppm/°C drift, -40°C to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","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":"Not For New Designs","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":"$1.4340","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e499b7cd54f3272232db27a8df268948.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4051BEM3-1.2/alternatives.json"},"ai":{"faq":[{"question":"Is LM4051BEM3-1.2 obsolete?","answer":"It is still available for existing production and repair orders, but new designs should migrate to a current-production alternative."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4051BEM3-1.2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4051BEM3-1.2 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}}