{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040A50IDBZR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040A50IDBZR","canonicalUrl":"https://icboms.com/texas-instruments/LM4040A50IDBZR","factsUrl":"https://icboms.com/api/mcp/products/LM4040A50IDBZR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040A50IDBZR, precision shunt voltage reference, fixed 5V output, ±0.1% tolerance, 100 ppm/°C, 80 µVrms noise, SOT-23-3 package, -40°C to 85°C.","salesMarkdown":"## 5V fixed shunt reference in SOT-23-3 It operates as a shunt (two-terminal) reference, meaning it sinks current through an external resistor from a higher supply rail — no separate supply pin, just a cathode and anode. ## Biasing the shunt — cathode current and output drive The shunt reference requires a bias resistor from the supply to the cathode to set the operating current. The LM4040A50IDBZR is specified for a cathode current range from 95 µA minimum to 15 mA maximum. The 95 µA floor sets the minimum bias current to maintain regulation; below that the output voltage may drift. The 15 mA ceiling limits the total current available to both the reference and any load — if the load draws 10 mA, the bias resistor must still deliver at least 95 µA through the reference itself. ## SOT-23-3 footprint and surface-mount assembly The part ships in a SOT-23-3 package (also listed as TO-236-3 / SC-59). The three-pin footprint — cathode, anode, and no-connect — is standard across the LM4040 family. For production BOMs, the active lifecycle means no forced redesign horizon from the manufacturer side — though it is always prudent to monitor PCNs for any future changes.","metaTitle":"LM4040A50IDBZR Shunt Voltage Reference, 5V ±0.1%, SOT-23-3","metaDescription":"Precision 5V shunt reference from TI in SOT-23-3. ±0.1% tolerance, 80 µVrms noise, 100 ppm/°C drift. Active production, sourced per RFQ.","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":"±0.1%","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":"95 µA","Base Product Number":"LM4040","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"80µVrms","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"100ppm/°C","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.2400","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040A50IDBZR/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040A50IDBZR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040A50IDBZR 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}}