{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL431AIDBZR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL431AIDBZR","canonicalUrl":"https://icboms.com/texas-instruments/TL431AIDBZR","factsUrl":"https://icboms.com/api/mcp/products/TL431AIDBZR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL431AIDBZR, adjustable shunt voltage reference, ±1% tolerance, 2.495 V min output, 100 mA cathode current, SOT-23-3 surface-mount package, -40°C to 85°C.","salesMarkdown":"## What the TL431AIDBZR does in a supply or error-amplifier loop It acts as a precision programmable Zener — the reference voltage at the REF pin sets the output threshold, and the cathode sinks current to regulate the loop. With a ±1% tolerance on the internal reference, this grade suits applications where tighter accuracy matters — think isolated flyback feedback, linear regulator error amplifiers, or precision over-voltage detection. The 100 mA cathode current rating is enough to drive an optocoupler LED directly in a secondary-side feedback loop. ## Package and footprint — SOT-23-3 assembly notes The part comes in a SOT-23-3 package (also referred to as TO-236-3 or SC-59). It is a three-lead surface-mount package.","metaTitle":"TL431AIDBZR Texas Instruments Shunt Reference, ±1%, SOT-23-3","metaDescription":"TL431AIDBZR is an adjustable precision shunt reference from TI. Output range 2.495 V to 36 V, ±1% tolerance, 100 mA cathode current, SOT-23-3 package.","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~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":"$0.09574","priceTiers":[{"qty":5,"price":"$0.09574","currency":"USD"},{"qty":50,"price":"$0.07647","currency":"USD"},{"qty":150,"price":"$0.06643","currency":"USD"},{"qty":500,"price":"$0.05826","currency":"USD"},{"qty":3000,"price":"$0.05546","currency":"USD"},{"qty":6000,"price":"$0.05347","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/2e8567ad04842692d5fb8309c69e90b6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL431AIDBZR/alternatives.json"},"ai":{"faq":[{"question":"What is the exact specification of TL431AIDBZR?","answer":"The TL431AIDBZR is an adjustable shunt voltage reference with a ±1% tolerance. Its output voltage range is 2.495 V minimum to 36 V maximum. It can sink up to 100 mA at the cathode, with a minimum cathode current of 700 µA. It comes in a SOT-23-3 surface-mount package."},{"question":"Is TL431AIDBZR a good replacement for TL431AIDBZT?","answer":"The TL431AIDBZR and TL431AIDBZT share the same base product number TL431 and the same ±1% tolerance. The difference is the package suffix: DBZR is Tape & Reel, DBZT is typically cut tape. Electrically they are identical. The DBZR variant is the reeled version for automated pick-and-place; the DBZT is the cut-tape option for smaller quantities. As long as the package (SOT-23-3) and pinout match, the DBZR is a direct replacement for the DBZT."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL431AIDBZR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL431AIDBZR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-13T09:47:51.855Z","lastPublished":"2026-08-13T09:47:51.855Z","indexable":true}}