{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040EIM3-3.0/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040EIM3-3.0-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM4040EIM3-3.0-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM4040EIM3-3.0%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040EIM3-3.0/NOPB, shunt voltage reference, fixed 3 V output, ±2% tolerance, 15 mA output, 70 µA cathode current, 35 µVrms noise, SOT-23-3 package, -40°C to 85°C.","salesMarkdown":"## 3 V shunt reference in a SOT-23-3 — what it delivers ## Tolerance, noise, and bias current — the decision specs The ±2% initial tolerance (E grade) is adequate for general-purpose ADC references and comparator thresholds; for tighter accuracy, the A-grade (0.1%) or B-grade (0.2%) siblings in the LM4040 family are the next step up. Output noise is 35 µVrms over 10 Hz to 10 kHz, clean enough for a 12-bit SAR ADC without additional filtering. Minimum cathode current is 70 µA — the shunt must see at least this much bias current to regulate. The SOT-23-3 footprint is a standard three-pin layout shared with many shunt references, making it a drop-in candidate for existing board designs. The temperature coefficient is 150 ppm/°C — a moderate drift that is acceptable for 8- to 12-bit systems but may need calibration or a tighter-tempco part for 14-bit or above.","metaTitle":"LM4040EIM3-3.0/NOPB Shunt Voltage Reference, 3 V Fixed, ±2%","metaDescription":"Texas Instruments LM4040EIM3-3.0/NOPB precision shunt reference, 3 V fixed output, ±2% tolerance, 70 µA cathode current, 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":"±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":"15 mA","Current - Supply":"-","Current - Cathode":"70 µA","Base Product Number":"LM4040","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"35µVrms","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"150ppm/°C","Voltage - Output (Min/Fixed)":"3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2382","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/db47fc1a31c797b619d88478be755429.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040EIM3-3.0%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of LM4040EIM3-3.0/NOPB?","answer":"The initial tolerance is ±2%."},{"question":"Is LM4040EIM3-3.0/NOPB equivalent to LM4040AIM3-3.0?","answer":"Both are 3 V shunt references in SOT-23-3, but the LM4040AIM3-3.0 carries a tighter ±0.1% tolerance. The E-grade here is ±2%, so they are not drop-in equivalents for precision — the A-grade is the higher-accuracy sibling."},{"question":"What is the cathode current of LM4040EIM3-3.0/NOPB?","answer":"The minimum cathode current is 70 µA."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040EIM3-3.0-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/LM4040EIM3-3.0-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}}