{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL431QDBVR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL431QDBVR","canonicalUrl":"https://icboms.com/texas-instruments/TL431QDBVR","factsUrl":"https://icboms.com/api/mcp/products/TL431QDBVR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL431QDBVR, adjustable shunt voltage reference, ±2.2% tolerance, 2.495V to 36V output, 100 mA cathode current, -40°C to 125°C, SOT-23-5 package.","salesMarkdown":"The ±2.2% tolerance on the TL431QDBVR means the reference voltage at the cathode can vary by up to 55 mV around the nominal 2.495 V minimum. If your design needs better than 1% initial accuracy, you step up to the TL431A or TL431B grade variants — but for general-purpose adjustable supplies, optocoupler feedback loops, and comparator thresholds, ±2.2% is the standard production-grade spec that keeps BOM cost down. ## Adjustable from 2.495 V to 36 V — one part covers multiple rails With a minimum cathode voltage of 2.495 V and a maximum of 36 V, this single shunt reference can serve as a precision 2.5 V local reference for an ADC, a 5 V shunt regulator for an isolated flyback feedback loop, or a 24 V clamp in an industrial sensor interface. The 100 mA output current rating gives enough headroom to drive the optocoupler LED plus bias resistors in most isolated power supplies without needing a buffer transistor. The SOT-23-5 package keeps the footprint small, but the thermal performance is adequate for the 100 mA maximum cathode current — just ensure the PCB copper area around the device can sink the dissipation at high ambient temperatures. ## Package and mounting — SOT-23-5, surface-mount only Supplied in the SOT-23-5 package, this is a surface-mount device intended for reflow assembly. No through-hole variant exists for this order code.","metaTitle":"TL431QDBVR Shunt Voltage Reference, Adjustable, ±2.2%","metaDescription":"Texas Instruments TL431QDBVR adjustable shunt voltage reference, ±2.2% tolerance, 2.495V to 36V output, 100 mA, -40°C to 125°C, SOT-23-5.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Tolerance":"±2.2%","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"SC-74A, SOT-753","Product Status":"Active","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"100 mA","Current - Supply":"-","Current - Cathode":"1 mA","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-23-5","Temperature Coefficient":"-","Voltage - Output (Min/Fixed)":"2.495V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4400","priceTiers":[{"qty":1,"price":"$0.44000","currency":"USD"},{"qty":10,"price":"$0.37900","currency":"USD"},{"qty":25,"price":"$0.35400","currency":"USD"},{"qty":100,"price":"$0.28310","currency":"USD"},{"qty":250,"price":"$0.26288","currency":"USD"},{"qty":500,"price":"$0.22242","currency":"USD"},{"qty":1000,"price":"$0.17187","currency":"USD"},{"qty":3000,"price":"$0.15671","currency":"USD"},{"qty":6000,"price":"$0.14660","currency":"USD"},{"qty":15000,"price":"$0.13649","currency":"USD"},{"qty":30000,"price":"$0.12941","currency":"USD"},{"qty":75000,"price":"$0.12638","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/2e8567ad04842692d5fb8309c69e90b6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL431QDBVR/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of TL431QDBVR?","answer":"The TL431QDBVR has a ±2.2% initial tolerance on the reference voltage. That is the standard-grade spec; for tighter accuracy you would look at the TL431A (±1%) or TL431B (±0.5%) variants."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL431QDBVR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL431QDBVR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}