{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL431AIPKG3","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL431AIPKG3","canonicalUrl":"https://icboms.com/texas-instruments/TL431AIPKG3","factsUrl":"https://icboms.com/api/mcp/products/TL431AIPKG3","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL431AIPKG3, adjustable shunt voltage reference, ±1% tolerance, 2.495 V min output, 100 mA output, SOT-89-3 surface-mount, -40°C to 85°C.","salesMarkdown":"## 2.495 V ±1% — the precision tier that matters The output voltage is set to a minimum of 2.495 V by the internal bandgap, and can be programmed up to 36 V with two external resistors. ## 100 mA sink and 700 µA cathode current The device can sink up to 100 mA of continuous cathode current, which covers the majority of low-power shunt regulator and series-pass regulator applications. For a typical 5 V to 3.3 V shunt regulator, the 100 mA ceiling means the load current plus the 700 µA bias must stay under 100 mA. That is generous for a sensor or MCU rail, but tight for a multi-amp logic supply — the TL431 is a reference, not a pass element. ## SOT-89-3 package and industrial temperature range The SOT-89-3 (TO-243AA) package is a three-lead surface-mount footprint with a large collector tab on the centre lead for heat sinking. If the ambient exceeds 85°C, the TL431B grade or the automotive-qualified TL431-Q1 should be considered. The TL431 family has been in continuous production for decades and is second-sourced by multiple manufacturers, which makes it a low-risk choice for long-life BOMs.","metaTitle":"TL431AIPKG3 Shunt Reference, ±1% Tolerance, SOT-89-3","metaDescription":"TL431AIPKG3 adjustable shunt voltage reference, ±1% tolerance, 2.495 V to 36 V output, 100 mA sink, SOT-89-3 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-243AA","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-89-3","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/TL431AIPKG3/alternatives.json"},"ai":{"faq":[{"question":"Is TL431AIPKG3 RoHS compliant?","answer":"Confirm the specific date-code compliance through the manufacturer's RoHS certificate."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL431AIPKG3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL431AIPKG3 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}}