{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL431AQDBVRE4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL431AQDBVRE4","canonicalUrl":"https://icboms.com/texas-instruments/TL431AQDBVRE4","factsUrl":"https://icboms.com/api/mcp/products/TL431AQDBVRE4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL431AQDBVRE4, adjustable shunt voltage reference, ±1% tolerance, 2.495V min / 36V max output, 100 mA cathode current, SOT-23-5 package, -40°C to 125°C.","salesMarkdown":"## What this shunt reference does on the board It sets a precise output from 2.495 V up to 36 V using two external resistors, with a ±1% tolerance that qualifies it for tighter-regulation designs than the standard ±2% TL431B grade. The part sinks up to 100 mA of cathode current and requires a minimum of 700 µA to stay in regulation, which sets the bias resistor sizing in a typical shunt configuration. ## Obsolete — sourcing the last buys and surplus channel The TL431AQDBVRE4 comes in a SOT-23-5 package (also designated SC-74A), a five-pin surface-mount footprint with 0.95 mm pitch. It is a hand-solderable size under a hot-air station — the small thermal mass means the part heats quickly, so a low-temperature profile (around 240°C peak) with a short dwell keeps the junction intact.","metaTitle":"TL431AQDBVRE4 Shunt Voltage Reference, ±1%, SOT-23-5","metaDescription":"Texas Instruments TL431AQDBVRE4 adjustable shunt voltage reference, ±1% tolerance, 2.495V to 36V output, 100 mA cathode current, SOT-23-5.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR)","Tolerance":"±1%","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"SC-74A, SOT-753","Product Status":"Obsolete","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~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":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/99b53f28cf28b982a16c2a9ac87cd6e9.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL431AQDBVRE4/alternatives.json"},"ai":{"faq":[{"question":"What is the best replacement for TL431AQDBVRE4?","answer":"There is no direct pin-compatible replacement with the same ±1% tolerance in the SOT-23-5 package that Texas Instruments has officially designated as a successor. The broader TL431 family includes active variants in different packages (e.g., SOT-23-3, TO-92) and tolerance grades (B-grade at ±2%, A-grade at ±1%), but none carry the exact TL431AQDBVRE4 order code. For a BOM requiring the SOT-23-5 footprint and ±1% tolerance, a cross-reference to a different manufacturer's TL431-equivalent in the same package may be necessary — confirm the pinout and reference voltage before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL431AQDBVRE4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL431AQDBVRE4 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}}