{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040QAIM3X2.5/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040QAIM3X2.5-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM4040QAIM3X2.5-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM4040QAIM3X2.5%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040QAIM3X2.5/NOPB, Automotive AEC-Q100 precision shunt voltage reference, fixed 2.5 V output, ±0.1% tolerance, 35 µVrms noise, 100 ppm/°C tempco, SOT-23-3 package, -40°C to 85°C.","salesMarkdown":"## AEC-Q100 precision shunt reference for automotive BOMs The Texas Instruments LM4040QAIM3X2.5/NOPB is a precision shunt voltage reference with a fixed 2.5 V output, ±0.1% initial tolerance, and 35 µVrms noise over 10 Hz to 10 kHz. The ±0.1% initial accuracy at 2.5 V keeps the reference error under 2.5 mV before temperature effects. As a shunt reference, the LM4040QAIM3X2.5/NOPB sinks current through a series resistor from the supply rail. The 65 µA minimum cathode current sets the lower bound for the bias current; the 15 mA maximum output current defines the load headroom. For a 5 V rail feeding a 2.5 V reference, a 1 kΩ series resistor delivers about 2.5 mA bias — enough to cover the cathode current plus a modest load while staying well under the 15 mA ceiling. ## SOT-23-3 package — footprint and supply posture The surface-mount footprint matches the standard SOT-23-3 land pattern — no special pad geometry required.","metaTitle":"LM4040QAIM3X2.5/NOPB Shunt Voltage Reference, ±0.1%","metaDescription":"Texas Instruments LM4040QAIM3X2.5/NOPB precision shunt reference, 2.5 V fixed output, ±0.1% tolerance, 35 µVrms noise, AEC-Q100 automotive grade.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±0.1%","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":"65 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":"100ppm/°C","Voltage - Output (Min/Fixed)":"2.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0665","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4e1c3528e3eebcc37e5c67c06abddb5f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040QAIM3X2.5%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of LM4040QAIM3X2.5/NOPB?","answer":"The initial tolerance is ±0.1%. This means the output voltage at 25°C is within 2.5 V ± 2.5 mV, before temperature drift."},{"question":"How does LM4040QAIM3X2.5/NOPB compare to LM4040AIM3X2.5?","answer":"The key difference is the AEC-Q100 automotive qualification (Series: Automotive, AEC-Q100) on the 'Q' variant. The commercial-grade LM4040AIM3X2.5 lacks this certification. For automotive or high-reliability industrial BOMs that require AEC-Q100 traceability, the QAIM3X2.5/NOPB is the correct choice. All other parametrics — output voltage, tolerance, noise, package — are identical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040QAIM3X2.5-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/LM4040QAIM3X2.5-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}}