{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL431AIDR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL431AIDR","canonicalUrl":"https://icboms.com/texas-instruments/TL431AIDR","factsUrl":"https://icboms.com/api/mcp/products/TL431AIDR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL431AIDR, adjustable shunt voltage reference, ±1% tolerance, 100 mA output, 2.495 V reference, 8-SOIC package, -40°C to 85°C.","salesMarkdown":"## ±1% tolerance — the precision tier for signal-chain bias The ±1% tolerance on the reference voltage is the standard precision grade for the TL431 family. ## 100 mA output and 700 µA cathode current — load budget and quiescent trade-off Rated for 100 mA continuous output current, the TL431AIDR can sink enough current to drive optocoupler LEDs in isolated power supplies or to shunt excess current in a series-pass regulator. The minimum cathode current of 700 µA sets the floor for the bias resistor — below that the reference may not regulate. That 700 µA is low enough to keep quiescent loss small in battery-powered circuits, but not as low as the 400 µA min of the TL431B-grade siblings. ## 8-SOIC package — surface-mount footprint for automated assembly The surface-mount package suits reflow soldering and automated pick-and-place, and the wide-body option provides better thermal dissipation than the SOT-23 variants when the device is dissipating power at the 100 mA output limit.","metaTitle":"TL431AIDR Texas Instruments Shunt Reference, ±1% Tolerance","metaDescription":"Texas Instruments TL431AIDR adjustable shunt voltage reference, ±1% tolerance, 100 mA output, 2.495 V reference, 8-SOIC package, active lifecycle.","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":"8-SOIC (0.154\\\", 3.90mm Width)","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":"8-SOIC","Temperature Coefficient":"-","Voltage - Output (Min/Fixed)":"2.495V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4300","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2e8567ad04842692d5fb8309c69e90b6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL431AIDR/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of TL431AIDR?","answer":"The TL431AIDR is specified with a ±1% tolerance on the reference voltage. That is the standard precision grade for the TL431 family, suitable for feedback dividers and reference circuits that need 1% accuracy without external trimming."},{"question":"What is the difference between TL431AID and TL431AIDR?","answer":"The TL431AID and TL431AIDR are electrically identical — same ±1% tolerance, same 100 mA output, same 8-SOIC package. The difference is the shipping medium: the 'R' suffix indicates Tape & Reel packaging, while the non-'R' variant ships in tubes. The TL431AIDR is the reeled option for automated assembly lines."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL431AIDR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL431AIDR 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}}