{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL1431CLP","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL1431CLP","canonicalUrl":"https://icboms.com/texas-instruments/TL1431CLP","factsUrl":"https://icboms.com/api/mcp/products/TL1431CLP","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL1431CLP, adjustable shunt voltage reference, ±0.4% tolerance, 2.5V to 36V output, 100 mA cathode current, TO-92-3 through-hole package, 0°C to 70°C.","salesMarkdown":"## Package and mounting The 100 mA output current capability is unusually high for a shunt reference — it can directly bias an optocoupler LED in a feedback loop or power a small load without a buffer transistor. Minimum cathode current is 1 mA, so the part stays in regulation down to light loads. The commercial temperature range (0°C to 70°C) fits indoor equipment, bench supplies, and office electronics — not an engine bay or a rooftop radio. ## How it compares to a series reference like the LM4132 The LM4132AMF-4.1/NOPB is a fixed 4.096 V series reference in a surface-mount SOT-23 package with ±0.05% tolerance and a 20 ppm/°C drift. The TL1431CLP is a shunt reference — it works like a programmable Zener, not a three-terminal regulator. The shunt topology means it can regulate voltages above its own set point (up to 36 V) and sink rather than source current. The trade-off: the TL1431CLP's ±0.4% tolerance is eight times looser than the LM4132's, and its 0°C to 70°C range is narrower than the LM4132's -40°C to 125°C. If your board needs a precise fixed voltage over temperature, the LM4132 wins. If you need an adjustable high-voltage reference or a current-sinking regulator, the TL1431CLP is the right topology. ## Lifecycle and sourcing — active, no LTB pressure The TL1431CLP is listed as Active with ROHS3 compliance. No end-of-life notice, no last-time-buy deadline.","metaTitle":"TL1431CLP Shunt Voltage Reference, Adjustable 2.5-36V, ±0.4%","metaDescription":"TL1431CLP adjustable shunt voltage reference, ±0.4% tolerance, 100 mA output, 2.5V to 36V range. TO-92-3 through-hole. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Bulk","Tolerance":"±0.4%","Output Type":"Adjustable","Mounting Type":"Through Hole","Package / Case":"TO-226-3, TO-92-3 (TO-226AA)","Reference Type":"Shunt","lifecycle_stage":"eol_hot","Current - Output":"100 mA","Current - Cathode":"1 mA","Operating Temperature":"0°C ~ 70°C (TA)","Voltage - Output (Max)":"36 V","Supplier Device Package":"TO-92-3","Voltage - Output (Min/Fixed)":"2.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.08","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.08000","currency":"USD"},{"qty":10,"price":"$0.96900","currency":"USD"},{"qty":25,"price":"$0.92000","currency":"USD"},{"qty":100,"price":"$0.75580","currency":"USD"},{"qty":250,"price":"$0.70648","currency":"USD"},{"qty":500,"price":"$0.62434","currency":"USD"},{"qty":1000,"price":"$0.49290","currency":"USD"},{"qty":2500,"price":"$0.46500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/332b498c3373f8f4be7062bd7844f2e8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is TL1431CLP the same as TL431?","answer":"The TL1431CLP is a precision version of the classic TL431. Both are adjustable shunt references in the same TO-92-3 pinout, but the TL1431CLP offers ±0.4% initial tolerance versus the TL431's typical ±1% or ±2% grade. On a repair bench, a TL1431CLP can replace a TL431 in most circuits and improve the set-point accuracy — but check the cathode current range if the original circuit runs near the TL431's minimum."},{"question":"What is the tolerance of TL1431CLP?","answer":"The TL1431CLP has a ±0.4% initial tolerance on the reference voltage. At 2.5 V that is ±10 mV; at 10 V it is ±40 mV."},{"question":"Can TL1431CLP be used as a 5V reference?","answer":"Yes. With a resistor divider (R1 and R2) you set the output to 5 V. The part regulates from 2.5 V to 36 V, so 5 V is well within range. The ±0.4% tolerance gives about ±20 mV at 5 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL1431CLP","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL1431CLP when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}