{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL431LIAIDBZR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL431LIAIDBZR","canonicalUrl":"https://icboms.com/texas-instruments/TL431LIAIDBZR","factsUrl":"https://icboms.com/api/mcp/products/TL431LIAIDBZR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL431LIAIDBZR, precision adjustable shunt voltage reference, 2.495V to 36V output, ±1% tolerance, 15 mA output, 1 mA cathode current, -40°C to 85°C, SOT-23-3 package.","salesMarkdown":"## Adjustable shunt reference – what the 2.495 V to 36 V range buys you It is the workhorse precision reference for any design that needs a stable voltage between 2.495 V and 36 V, set by two external resistors. The ±1% initial tolerance keeps the output accurate without trimming, and the 15 mA output current is enough to bias optocouplers, set comparator thresholds, or supply a low-power ADC reference. The 1 mA minimum cathode current means the reference stays in regulation even at light load – a detail that matters when you are sizing the bias resistor in a power-supply feedback loop. ## SOT-23-3 footprint and temperature range The TL431LIAIDBZR comes in a SOT-23-3 package (also listed as TO-236-3 / SC-59). That three-pin footprint matches the industry-standard TL431 pinout, so any board already using a SOT-23-3 shunt reference can drop this part in without a layout change. No special thermal management needed at 15 mA output; the SOT-23-3 body handles the dissipation as long as the cathode voltage stays within the 36 V maximum. That means no last-time-buy deadline to track, no end-of-life scramble.","metaTitle":"TL431LIAIDBZR Shunt Voltage Reference","metaDescription":"TL431LIAIDBZR precision shunt reference, adjustable output 2.495V to 36V, ±1% tolerance, -40°C to 85°C, SOT-23-3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±1%","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Active","Reference Type":"Shunt","lifecycle_stage":"eol_hot","Current - Output":"15 mA","Current - Supply":"-","Current - Cathode":"1 mA","Base Product Number":"TL431","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"-","Operating Temperature":"-40°C~85°C(TA)","Voltage - Output (Max)":"36 V","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"-","Voltage - Output (Min/Fixed)":"2.495V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5500","priceTiers":[{"qty":1,"price":"$0.55000","currency":"USD"},{"qty":10,"price":"$0.46900","currency":"USD"},{"qty":25,"price":"$0.43760","currency":"USD"},{"qty":100,"price":"$0.35020","currency":"USD"},{"qty":250,"price":"$0.32520","currency":"USD"},{"qty":500,"price":"$0.27518","currency":"USD"},{"qty":1000,"price":"$0.21264","currency":"USD"},{"qty":3000,"price":"$0.19387","currency":"USD"},{"qty":6000,"price":"$0.18137","currency":"USD"},{"qty":15000,"price":"$0.17700","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/9234c39c5cbd1d015161df75db2c9943.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL431LIAIDBZR/alternatives.json"},"ai":{"faq":[{"question":"What is the cathode current for TL431LIAIDBZR?","answer":"The minimum cathode current is 1 mA, which is the current needed to keep the reference in regulation. The maximum output current is 15 mA."},{"question":"What is the closest pin-compatible alternative to TL431LIAIDBZR?","answer":"The TL431 family includes many SOT-23-3 variants from multiple manufacturers (e.g., TI, ON Semiconductor, NXP) that share the same pinout and adjustable 2.495 V to 36 V range. For a direct second source, look for a TL431 variant in SOT-23-3 with matching tolerance and temperature specs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL431LIAIDBZR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL431LIAIDBZR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}