{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL431BCPWR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL431BCPWR","canonicalUrl":"https://icboms.com/texas-instruments/TL431BCPWR","factsUrl":"https://icboms.com/api/mcp/products/TL431BCPWR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL431 series adjustable shunt voltage reference, TL431BCPWR, ±0.5% tolerance, 100 mA output, 2.495 V reference, 8-TSSOP package, surface mount.","salesMarkdown":"## Adjustable shunt reference with ±0.5% precision Its ±0.5% tolerance on the 2.495 V internal reference makes it a B-grade selection for applications that need tighter regulation than the standard 1% or 2% TL431 grades. This is a shunt-type reference, meaning it operates in parallel with the load and regulates by shunting current away from the load through the cathode. ## Last Buy — plan the BOM transition This is not an active-production part — the manufacturer has issued a last-time-buy notice, and remaining inventory is finite. The TL431 function itself is a standard industry pinout — the TL431BCPWR is the B-grade, ±0.5% tolerance variant in the 8-TSSOP package. A replacement search should focus on the same package (8-TSSOP), same tolerance grade, and same pin-compatible shunt reference function. The base product number is TL431, and other TL431B-grade parts in 8-TSSOP from TI or second-source manufacturers may serve as a cross. ## Parametric fit for the BOM The ±0.5% tolerance is the headline differentiator. A standard TL431 is typically 1% or 2%; the B-grade part is specified for designs where the reference voltage accuracy directly affects system precision — for example, setting the output of an isolated DC-DC converter via an optocoupler, or providing a stable bias for an ADC reference input. The 8-TSSOP package is a surface-mount, 4.40 mm wide body with a 0.65 mm pin pitch. The supplier device package is 8-TSSOP. The mounting type is surface mount.","metaTitle":"TL431BCPWR Shunt Voltage Reference, ±0.5% Tolerance, 8-TSSOP","metaDescription":"Texas Instruments TL431BCPWR adjustable shunt voltage reference. ±0.5% tolerance, 100 mA output, 8-TSSOP package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Last Buy","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":"8-TSSOP (0.173\\\", 4.40mm Width)","Product Status":"Last Time Buy","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"100 mA","Current - Supply":"-","Current - Cathode":"600 µA","Base Product Number":"TL431","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"-","Operating Temperature":"0°C~70°C(TA)","Voltage - Output (Max)":"36 V","Supplier Device Package":"8-TSSOP","Temperature Coefficient":"-","Voltage - Output (Min/Fixed)":"2.495V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5100","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2e8567ad04842692d5fb8309c69e90b6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL431BCPWR/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of the TL431BCPWR?","answer":"The TL431BCPWR has a ±0.5% tolerance on the internal 2.495 V reference. This is the B-grade precision level, tighter than the standard 1% or 2% TL431 grades."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL431BCPWR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL431BCPWR 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}}