{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TLV431QPK","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TLV431QPK","canonicalUrl":"https://icboms.com/texas-instruments/TLV431QPK","factsUrl":"https://icboms.com/api/mcp/products/TLV431QPK","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TLV431QPK adjustable shunt voltage reference, 1.24 V minimum, ±1.5% tolerance, 15 mA output, SOT-89-3 surface-mount package, -40°C to 125°C operating temperature.","salesMarkdown":"## 1.24 V minimum, adjustable to 6 V — the precision shunt reference for tight regulation Its ±1.5% tolerance is tighter than the industry-standard TL431's typical ±2%, making it the choice for applications where output accuracy matters — precision power supplies, data-acquisition front ends, and sensor bias circuits. The 15 mA output current rating sets the upper limit for the load the reference can drive directly; for higher loads, buffer with an op-amp or transistor. The 100 µA minimum cathode current is the bias current the device needs to regulate — below that, the output voltage drifts. Design the bias resistor to guarantee at least 100 µA through the cathode at all input voltages. ## SOT-89-3 package — surface-mount with a thermal tab Housed in a TO-243AA (SOT-89-3) surface-mount package, the TLV431QPK has a large collector tab on the bottom that conducts heat to the PCB copper plane. The tab is internally connected to the cathode terminal.","metaTitle":"TLV431QPK Adjustable Shunt Reference, 1.24 V, ±1.5%, Active","metaDescription":"TI TLV431QPK adjustable shunt voltage reference. Output range 1.24 V to 6 V, ±1.5% tolerance, 15 mA output, -40°C to 125°C. SOT-89-3. 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":"±1.5%","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":"15 mA","Current - Supply":"-","Current - Cathode":"100 µA","Base Product Number":"TLV431","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"-","Operating Temperature":"-40°C~125°C(TA)","Voltage - Output (Max)":"6 V","Supplier Device Package":"SOT-89-3","Temperature Coefficient":"-","Voltage - Output (Min/Fixed)":"1.24V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2890","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4de43c4ff3ead6fd17ae3f61f4aa48c4.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TLV431QPK/alternatives.json"},"ai":{"faq":[{"question":"Is TLV431QPK a good replacement for TL431 or other adjustable shunt references?","answer":"The TLV431QPK is pin-compatible with the industry-standard TL431 in the SOT-89-3 package, but offers a tighter ±1.5% tolerance versus the TL431's typical ±2%. It also operates down to 1.24 V minimum output, compared to the TL431's 2.5 V minimum. For designs requiring a lower reference voltage or tighter regulation, the TLV431QPK is a direct drop-in replacement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TLV431QPK","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TLV431QPK 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}}