{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL431QDR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL431QDR","canonicalUrl":"https://icboms.com/texas-instruments/TL431QDR","factsUrl":"https://icboms.com/api/mcp/products/TL431QDR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL431QDR, adjustable shunt regulator, 2.495 V reference, 100 mA output, ±2.2% tolerance, -40°C to 125°C, 8-SOIC package, surface mount.","salesMarkdown":"## Adjustable shunt regulator with a 2.495 V floor Its internal reference is set at 2.495 V, and the output can be programmed up to 36 V using two external resistors. The part delivers up to 100 mA continuous cathode current, making it a workhorse for precision voltage references, series-pass regulators, and error amplifiers in isolated power supplies. ## ±2.2% tolerance and industrial temperature range The TL431QDR carries a ±2.2% tolerance on the reference voltage, which is tighter than the standard ±2% or ±1% grades found in the TL431 family. For the spare-parts storeroom, this means the reel can be ordered without worrying about a sudden discontinuation. Store the reels dry — the SOIC-8 package is moisture-sensitive, and a bake before reflow is needed if the seal is broken.","metaTitle":"TL431QDR Shunt Regulator, Adjustable 2.495V Ref, 100 mA","metaDescription":"TL431QDR adjustable shunt regulator from Texas Instruments. 2.495 V reference, 100 mA output, ±2.2% tolerance, -40°C to 125°C. Active production, SOIC-8.","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":"±2.2%","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","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":"8-SOIC","Temperature Coefficient":"-","Voltage - Output (Min/Fixed)":"2.495V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1002","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2e8567ad04842692d5fb8309c69e90b6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL431QDR/alternatives.json"},"ai":{"faq":[{"question":"What is the minimum cathode current for the TL431QDR?","answer":"The minimum cathode current is 1 mA. Below this level the device may not regulate properly. The 100 mA maximum output current defines the load-driving ceiling."},{"question":"Is the TL431QDR equivalent to the TL431A?","answer":"The TL431QDR and TL431A are both adjustable shunt regulators in the TL431 family, but the TL431QDR carries a ±2.2% tolerance, while the TL431A is typically ±1%. The pinout is the same across the SOIC-8 package, so the QDR can replace the A grade in circuits where the looser tolerance is acceptable. For precision references, the A grade is the better fit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL431QDR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL431QDR 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}}