{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL431BIDBZR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL431BIDBZR","canonicalUrl":"https://icboms.com/texas-instruments/TL431BIDBZR","factsUrl":"https://icboms.com/api/mcp/products/TL431BIDBZR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL431 series, TL431BIDBZR, adjustable shunt voltage reference, output 2.495V min to 36V max, ±0.5% tolerance, 100 mA output, SOT-23-3, -40°C to 85°C.","salesMarkdown":"## Adjustable shunt reference with B-grade precision The B-grade tolerance of ±0.5% puts it a step above the standard 1% grade — useful when the feedback divider in a power supply or the reference input of an ADC needs tighter accuracy without moving to a fixed-voltage part. It sinks up to 100 mA and requires a minimum of 700 µA cathode current to stay in regulation. That 700 µA floor sets the bias resistor value — for a given supply rail, R = (Vin - Vref) / 0.0007, and the resistor must also handle the load current when the reference is off. ## SOT-23-3 — small, reworkable, widely stocked The SOT-23-3 package (also known as TO-236-3 or SC-59) is a three-lead surface-mount footprint roughly 2.9 mm × 1.3 mm. It hand-solders cleanly with a fine-tip iron and lifts clean under hot air — no hidden thermal pad, no risk of tombstoning if the pad geometry is balanced.","metaTitle":"TL431BIDBZR Adjustable Shunt Reference, ±0.5%, SOT-23-3","metaDescription":"Texas Instruments TL431BIDBZR adjustable shunt voltage reference. Output range 2.495V to 36V, ±0.5% tolerance, 100 mA sink, SOT-23-3.","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","Product Status":"Active","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":"$0.4500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2e8567ad04842692d5fb8309c69e90b6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL431BIDBZR/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between TL431BIDBZR and TL431AIDBZR?","answer":"The primary difference is the initial tolerance: TL431BIDBZR is ±0.5%, while TL431AIDBZR is ±1%. Both share the same SOT-23-3 package, pinout, output voltage range, and 100 mA sink capability. The B-grade is the tighter-tolerance variant for applications that need better reference accuracy."},{"question":"What is the cathode current for TL431BIDBZR?","answer":"The minimum cathode current required to maintain regulation is 700 µA. The device can sink up to 100 mA of continuous output current."},{"question":"Is TL431BIDBZR RoHS compliant?","answer":"Texas Instruments lists this part as RoHS-compliant and lead-free per its standard green material declaration."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL431BIDBZR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL431BIDBZR 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}}