{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL431BIDBZT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL431BIDBZT","canonicalUrl":"https://icboms.com/texas-instruments/TL431BIDBZT","factsUrl":"https://icboms.com/api/mcp/products/TL431BIDBZT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL431BIDBZT, adjustable shunt voltage reference, ±0.5% tolerance, 100 mA output, 2.495 V internal reference, SOT-23-3 package, -40°C to 85°C.","salesMarkdown":"## Shunt reference with ±0.5% initial tolerance Its internal reference is trimmed to 2.495 V, and the output voltage can be set to any value up to 36 V using two external resistors. The B-grade tolerance of ±0.5% is tighter than the standard ±1% or ±2% grades, making this variant the choice for precision supply rails or ADC reference circuits where the initial setpoint accuracy matters. ## 100 mA cathode current and 700 µA minimum bias The device can sink up to 100 mA at the cathode, which is enough to drive the optocoupler LED in a feedback loop or to shunt excess current in a linear regulator post-regulator stage. ## Industrial temperature range in a SOT-23-3 package The SOT-23-3 package (also known as TO-236-3 or SC-59) is a small surface-mount footprint that fits into compact designs without consuming much board area.","metaTitle":"TL431BIDBZT shunt voltage reference, ±0.5% tolerance","metaDescription":"TL431BIDBZT adjustable shunt reference, ±0.5% tolerance, 100 mA output, SOT-23-3 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":"±0.5%","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":"$1.0400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2e8567ad04842692d5fb8309c69e90b6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL431BIDBZT/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between TL431BIDBZT and TL431AIDBZT?","answer":"The primary difference is the reference voltage tolerance: TL431BIDBZT is ±0.5%, while TL431AIDBZT is ±1%. Both are otherwise pin-compatible and share the same SOT-23-3 package and 100 mA output current rating."},{"question":"What is the maximum cathode current for TL431BIDBZT?","answer":"The maximum continuous cathode current is 100 mA. The minimum cathode current required to maintain regulation is 700 µA."},{"question":"Can I use TL431BIDBZT as a direct replacement for TL431BIDBZR?","answer":"Yes, the TL431BIDBZT and TL431BIDBZR are the same die and tolerance grade. Electrically and footprint-wise they are interchangeable."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL431BIDBZT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL431BIDBZT 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}}