{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL431CKTPR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL431CKTPR","canonicalUrl":"https://icboms.com/texas-instruments/TL431CKTPR","factsUrl":"https://icboms.com/api/mcp/products/TL431CKTPR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL431CKTPR, adjustable precision shunt regulator, TO-252-3 (DPak) surface-mount package, obsolete lifecycle stage.","salesMarkdown":"It provides a programmable output voltage from 2.495 V to 36 V via two external resistors, with a typical output impedance of 0.2 Ω. It is commonly used in isolated DC-DC converter feedback loops, adjustable power supplies, and voltage monitoring circuits where a stable reference is needed across temperature. The TL431CKTPR carries an official product status of Obsolete. This means Texas Instruments has ceased production, and no further last-time-buy windows are open. The part is no longer available through authorized distribution channels. Availability and pricing are confirmed only at quote time, and quantities are typically limited to what exists on the spot market. ## Package and mounting — board-fit checklist The TL431CKTPR is a surface-mount device in the TO-252-3 (DPak) package, also known as SC-63, with two leads plus a tab. The tab is the cathode terminal and serves as the primary thermal path. The mounting type is Surface Mount, requiring a reflow or hot-air soldering process. The tab's large copper area on the PCB is essential for dissipating heat — the junction-to-ambient thermal resistance depends heavily on the board's copper pour. The package is, not Tape & Reel, which may affect pick-and-place handling for high-volume assembly.","metaTitle":"TL431CKTPR adjustable precision shunt regulator, obsolete","metaDescription":"TL431CKTPR is an obsolete adjustable precision shunt regulator in a TO-252-3 (DPak) surface-mount package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Bulk","Mounting Type":"Surface Mount","Package / Case":"TO-252-3, DPak (2 Leads + Tab), SC-63","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"TL431","Supplier Device Package":"TO-252-3"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.0900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/99b53f28cf28b982a16c2a9ac87cd6e9.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL431CKTPR/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy TL431CKTPR and how do I get a price?","answer":"TL431CKTPR is obsolete and no longer produced by Texas Instruments. Submit an RFQ for a real-time market check."},{"question":"Is TL431CKTPR obsolete?","answer":"Texas Instruments has discontinued this variant, and no last-time-buy is active. Procurement must rely on the surplus or broker market."},{"question":"What is the replacement for TL431CKTPR?","answer":"No official replacement or successor is listed for the TL431CKTPR. The TL431 family includes many active variants in different packages and temperature grades, but a pin-compatible drop-in replacement in the TO-252-3 package is not specified. A cross-reference search against the base product number TL431 may identify an active alternative with the same function."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL431CKTPR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL431CKTPR 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}}