{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL431BIDBZRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL431BIDBZRG4","canonicalUrl":"https://icboms.com/texas-instruments/TL431BIDBZRG4","factsUrl":"https://icboms.com/api/mcp/products/TL431BIDBZRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL431BIDBZRG4, adjustable shunt regulator, ±0.5% tolerance, 100 mA output, 2.495 V reference, SOT-23-3, -40 to 85°C.","salesMarkdown":"## Active shunt regulator with ±0.5% tolerance The Texas Instruments TL431BIDBZRG4 is an adjustable shunt regulator in a SOT-23-3 package, offering a ±0.5% tolerance on the 2.495 V internal reference. It sinks up to 100 mA and can regulate output voltages up to 36 V via an external resistor divider. The ±0.5% tolerance is tighter than the standard TL431's 1% or 2% grades, which matters when the feedback divider sets a tight regulation window in a switching power supply or a precision comparator threshold. The adjustable output spans from 2.495 V up to 36 V, so the same part covers multiple rail voltages — one line item for 3.3 V, 5 V, 12 V or 24 V loops. The 100 mA output current rating is the maximum cathode current the device can sink while maintaining regulation. In a typical shunt regulator configuration, the cathode current through the optocoupler LED or the bias resistor must stay below this ceiling, with headroom for temperature drift. There is no LTB risk on the horizon.","metaTitle":"TL431BIDBZRG4 Shunt Regulator, ±0.5% Tolerance, Active","metaDescription":"Texas Instruments TL431BIDBZRG4 adjustable shunt regulator, ±0.5% tolerance, 100 mA output, SOT-23-3. 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":"±0.5%","Output Type":"Adjustable","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":"700 µA","Base Product Number":"TL431","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"-","Operating Temperature":"-40°C~85°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":"$0.4400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2e8567ad04842692d5fb8309c69e90b6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL431BIDBZRG4/alternatives.json"},"ai":{"faq":[{"question":"Is TL431BIDBZRG4 a direct replacement for a standard TL431?","answer":"Yes, the TL431BIDBZRG4 is a pin-compatible, functional drop-in for any standard TL431 in a SOT-23-3 package. The key difference is the tighter ±0.5% reference tolerance versus the standard 1% or 2% grades, which improves output accuracy without changing the PCB layout or external component values."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL431BIDBZRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL431BIDBZRG4 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}}