{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL1431IZ-AP","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"TL1431IZ-AP","canonicalUrl":"https://icboms.com/stmicroelectronics/TL1431IZ-AP","factsUrl":"https://icboms.com/api/mcp/products/TL1431IZ-AP","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics TL1431IZ-AP, adjustable shunt voltage reference, TO-92-3 package, ±0.4% tolerance, 100 mA output, 2.5 V to 36 V, Tape & Box (TB) / Cut Tape (CT).","salesMarkdown":"## Precision shunt reference, TO-92-3, 0.4% initial accuracy The STMicroelectronics TL1431IZ-AP is a three-terminal adjustable shunt voltage reference in a through-hole TO-92-3 package. It delivers a programmable output from 2.5 V up to 36 V with a ±0.4% initial tolerance and a 100 ppm/°C temperature coefficient, sourcing up to 100 mA of cathode current. This part operates across -40°C to 105°C ambient, making it suitable for industrial control, power supply feedback loops, and data-acquisition systems where a stable reference over temperature is needed. The minimum cathode current is 1 mA, which sets the bias floor for proper regulation. ## Package variants and supply format Supplied in Tape & Box (TB) and Cut Tape (CT) formats, the TL1431IZ-AP uses the standard TO-92-3 footprint (TO-226AC). The through-hole body is identical to the bulk-packaged TL1431IZ sibling — same die, same ±0.4% grade — so a BOM swap between the two requires no board change, only a pick-and-place format adjustment for the tape feed. ## Peer comparison — temp range and tolerance grades The closest sibling is the TL1431IZ (Bulk), which shares the same ±0.4% tolerance, 100 ppm/°C tempco, and full industrial temperature range (-40°C to 105°C). The TL1431CZ-AP narrows the temp range to -20°C to 70°C but drops the tempco to 90 ppm/°C — a tighter drift spec for commercial-only environments. The TL1431AIZT offers a tighter ±0.25% tolerance at the same industrial temp range, but ships in Tape & Reel (TR) rather than the TB/CT formats of this part.","metaTitle":"STMicroelectronics TL1431IZ-AP Shunt Reference, ±0.4%, TO-92","metaDescription":"ST TL1431IZ-AP adjustable shunt voltage reference, 2.5V to 36V, 100mA output, ±0.4% tolerance, 100ppm/°C, -40°C to 105°C, TO-92-3, Active production, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Box (TB); Cut Tape (CT)","Tolerance":"±0.4%","Output Type":"Adjustable","Mounting Type":"Through Hole","Package / Case":"TO-226-2, TO-92-2 (TO-226AC)","Reference Type":"Shunt","lifecycle_stage":"eol_hot","Current - Output":"100 mA","Current - Cathode":"1 mA","Operating Temperature":"-40°C ~ 105°C (TA)","Voltage - Output (Max)":"36 V","Supplier Device Package":"TO-92-3","Temperature Coefficient":"100ppm/°C","Voltage - Output (Min/Fixed)":"2.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.01","priceTiers":[{"qty":1,"price":"$1.01000","currency":"USD"},{"qty":10,"price":"$0.90000","currency":"USD"},{"qty":25,"price":"$0.85400","currency":"USD"},{"qty":100,"price":"$0.70150","currency":"USD"},{"qty":250,"price":"$0.65580","currency":"USD"},{"qty":500,"price":"$0.57954","currency":"USD"},{"qty":1000,"price":"$0.45753","currency":"USD"},{"qty":2000,"price":"$0.42703","currency":"USD"},{"qty":6000,"price":"$0.40568","currency":"USD"},{"qty":10000,"price":"$0.39043","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/996cef81569de296d9e0e139436fbf9c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL1431IZ-AP/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of the TL1431IZ-AP?","answer":"The initial tolerance is ±0.4% at 25°C, with a temperature coefficient of 100 ppm/°C across the -40°C to 105°C operating range."},{"question":"Can the TL1431IZ-AP replace the TL1431IZ without a board change?","answer":"Yes. Both use the same TO-92-3 package and share identical electrical specs (2.5 V to 36 V output, 100 mA cathode current, ±0.4% tolerance). The only difference is the supply format — the TL1431IZ-AP comes in Tape & Box or Cut Tape, while the TL1431IZ ships in bulk tubes. No PCB or BOM position change is needed."},{"question":"What compliance documentation does STMicroelectronics provide for the TL1431IZ-AP?","answer":"The part is ROHS3 Compliant per STMicroelectronics' declaration. No separate UL or IEC certification is listed in the standard product documentation; compliance is asserted at the manufacturer level for the Discrete Semiconductors category."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/TL1431IZ-AP","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/TL1431IZ-AP when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}