{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040C50QDBZT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040C50QDBZT","canonicalUrl":"https://icboms.com/texas-instruments/LM4040C50QDBZT","factsUrl":"https://icboms.com/api/mcp/products/LM4040C50QDBZT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040C50QDBZT precision shunt voltage reference, fixed 5V output, ±0.5% tolerance, 15 mA output, 95 µA cathode current, SOT-23-3 package, -40°C to 125°C.","salesMarkdown":"## Fixed 5V shunt reference in a SOT-23-3 It comes in a surface-mount SOT-23-3 package (also listed as TO-236-3 / SC-59) and is designed for applications requiring a stable, low-noise reference voltage over a wide temperature range. The fixed 5V output is the exact voltage your ADC reference or regulator feedback divider sees — no external resistor divider needed. The ±0.5% tolerance sets the system accuracy floor. Output current is rated at 15 mA — this reference can bias multiple op-amp stages or a small load directly. The cathode current of 95 µA is the minimum current needed to maintain regulation; below that the output voltage drifts. In a battery-powered design, that 95 µA quiescent draw is a factor in the sleep-mode budget. The temperature coefficient is 100 ppm/°C, so the output shifts about 0.5 mV per °C — budget that drift in your system error analysis. Noise from 10 Hz to 10 kHz is 80 µVrms — low enough for a 12-bit ADC on a 5V reference without external filtering in most cases. For higher-resolution converters, a small bypass cap at the output pin knocks down the wideband noise further.","metaTitle":"LM4040C50QDBZT Shunt Voltage Reference, 5V ±0.5%, SOT-23-3","metaDescription":"Texas Instruments LM4040C50QDBZT precision shunt voltage reference, fixed 5V output, ±0.5% tolerance, 15 mA output, SOT-23-3 package, -40°C to 125°C.","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":"±0.5%","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~125°C(TA)","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"100ppm/°C","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.8900","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040C50QDBZT/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040C50QDBZT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040C50QDBZT 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}}