{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL431AQDBZR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL431AQDBZR","canonicalUrl":"https://icboms.com/texas-instruments/TL431AQDBZR","factsUrl":"https://icboms.com/api/mcp/products/TL431AQDBZR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL431AQDBZR adjustable precision shunt reference, ±1% tolerance, 100 mA output, 2.495 V to 36 V, SOT-23-3, -40°C to 125°C.","salesMarkdown":"## Adjustable shunt reference in SOT-23-3 — the ±1% matters Its ±1% tolerance at the 2.495 V internal reference sets the accuracy floor for the entire regulation loop — every resistor divider, every temperature coefficient in the feedback path, works against that initial tolerance. Rated for 100 mA continuous cathode current with a minimum bias of 700 µA, this part can drive optocoupler LEDs in isolated power supplies or sink the base drive of a pass transistor in a linear regulator. The 36 V maximum output voltage covers most 24 V and 48 V industrial rails with margin. ## Industrial temperature grade — motor drives and outdoor gear The SOT-23-3 package keeps the thermal mass low and the board footprint small, but the junction temperature must stay within the 125°C ceiling — the 100 mA output at high ambient will require attention to the copper pad area under the package. The base product number TL431 spans multiple tolerance grades and packages, but this specific A-grade SOT-23-3 variant is the one to lock into the BOM for the ±1% accuracy requirement.","metaTitle":"TL431AQDBZR shunt reference, ±1% tolerance, SOT-23-3","metaDescription":"Texas Instruments TL431AQDBZR adjustable precision shunt reference. ±1% tolerance, 100 mA output, SOT-23-3. Active lifecycle, industrial temp.","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":"±1%","Output Type":"Adjustable","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":"100 mA","Current - Supply":"-","Current - Cathode":"700 µA","Base Product Number":"TL431","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"-","Operating Temperature":"-40°C~125°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":"$0.4900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2e8567ad04842692d5fb8309c69e90b6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL431AQDBZR/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of TL431AQDBZR?","answer":"The TL431AQDBZR is specified with ±1% tolerance on the internal reference voltage. This is the A-grade variant of the TL431 family, tighter than the standard ±2% grade."},{"question":"Can TL431AQDBZR replace TL431ACDBZR?","answer":"Both parts share the same TL431 base function, adjustable output, and SOT-23-3 package. The TL431AQDBZR carries a ±1% tolerance, while the TL431ACDBZR is typically specified at ±1% as well. Pin-compatible for the same footprint, but confirm the exact tolerance grade and temperature range against your BOM requirement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL431AQDBZR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL431AQDBZR 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}}