{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL431QDBZR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL431QDBZR","canonicalUrl":"https://icboms.com/texas-instruments/TL431QDBZR","factsUrl":"https://icboms.com/api/mcp/products/TL431QDBZR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL431QDBZR adjustable shunt voltage reference, ±2.2% tolerance, 2.495V min / 36V max output, 100 mA output, SOT-23-3 surface mount, -40°C to 125°C.","salesMarkdown":"## 2.495V to 36V adjustable shunt — the BOM-fit anchor It sets a fixed 2.495V minimum output and can be programmed up to 36V with two external resistors. The ±2.2% tolerance on the reference voltage is tighter than the standard ±2% grade, which matters when the reference feeds an ADC or sets the regulation point in a flyback supply. The shunt can sink up to 100 mA continuous, with a minimum cathode current of 1 mA to maintain regulation. That 100 mA ceiling covers most bias and reference loads in industrial and automotive circuits — think power-supply feedback dividers, current-loop references, or comparator thresholds. For a storeroom keeper, that means the reel can be ordered on a normal replenishment cycle without hoarding a lifetime buy.","metaTitle":"TL431QDBZR Shunt Voltage Reference, 2.495V–36V, SOT-23-3","metaDescription":"Texas Instruments TL431QDBZR adjustable shunt reference, ±2.2% tolerance, 100 mA output, -40°C to 125°C. Active production, SOT-23-3 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"-","Packaging":"Tape & Reel (TR) Cut Tape (CT)","Tolerance":"±2.2%","Output Type":"Adjustable","Part Status":"Active","Manufacturer":"Texas Instruments","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","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-23-3","Temperature Coefficient":"-","Voltage - Output (Min/Fixed)":"2.495V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4100","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/50087f9afff55d28d5567f1ecd42327f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL431QDBZR/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible equivalent to TL431QDBZR?","answer":"The TL431 family spans multiple tolerance grades and temperature ranges. The TL431QDBZR is the ±2.2% tolerance, -40°C to 125°C variant in SOT-23-3. All share the same three-pin SOT-23-3 footprint and reference architecture."},{"question":"Can TL431QDBZR be used as a comparator?","answer":"Yes, the TL431 can function as a voltage comparator by connecting the reference pin to the threshold and the cathode to an open-collector pull-up. When the reference pin voltage exceeds 2.495V, the cathode sinks current. This is a common trick for over-voltage detection or window comparators, though the response time is slower than a dedicated comparator — typically a few microseconds."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL431QDBZR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL431QDBZR 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}}