{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4051BIM3X-1.2/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4051BIM3X-1.2-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM4051BIM3X-1.2-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM4051BIM3X-1.2%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4051BIM3X-1.2/NOPB precision shunt voltage reference, 1.225V fixed output, ±0.2% tolerance, 20µVrms noise, 65µA cathode current, SOT-23-3 package, -40°C to 85°C.","salesMarkdown":"## 1.225V shunt reference — the ±0.2% tolerance floor The Texas Instruments LM4051BIM3X-1.2/NOPB is a precision shunt voltage reference that delivers a fixed 1.225 V output with an initial tolerance of ±0.2%. It operates as a shunt (two-terminal) reference, meaning it sinks current from a supply through a series resistor to regulate the output voltage — the same topology as a Zener diode but with far tighter accuracy and stability. ## Noise floor and temperature drift Wideband noise is specified at 20 µVrms over 10 Hz to 10 kHz, making this reference suitable for 12-bit ADC references or precision comparator thresholds where noise on the reference rail directly degrades conversion accuracy. ## Current budget: 12 mA output, 65 µA cathode The reference can source or sink up to 12 mA of output current — enough to bias a small load or feed the reference input of an ADC without an external buffer. Housed in a three-lead SOT-23-3 package (also designated TO-236-3 / SC-59), this is a surface-mount part that fits a standard 0.95 mm pitch footprint.","metaTitle":"TI LM4051BIM3X-1.2/NOPB Shunt Voltage Reference","metaDescription":"Texas Instruments LM4051BIM3X-1.2/NOPB precision shunt reference: 1.225V fixed output, ±0.2% tolerance, 20µVrms noise, SOT-23-3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±0.2%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Active","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":"$1.0710","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e499b7cd54f3272232db27a8df268948.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4051BIM3X-1.2%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of LM4051BIM3X-1.2/NOPB?","answer":"The initial tolerance is ±0.2%."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4051BIM3X-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/LM4051BIM3X-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}}