{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL431BQLPM","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL431BQLPM","canonicalUrl":"https://icboms.com/texas-instruments/TL431BQLPM","factsUrl":"https://icboms.com/api/mcp/products/TL431BQLPM","rawCanonicalId":null},"summary":{"shortDescription":"onsemi TL431BQLPM adjustable shunt voltage reference, ±0.5% tolerance, 2.495V reference, 36V max output, 100 mA output, 700 µA cathode current, -40°C to 125°C, TO-92-3 through-hole package.","salesMarkdown":"## The ±0.5% B-grade — why it matters for your rail The TL431BQLPM is onsemi's B-grade adjustable shunt voltage reference, offering ±0.5% initial tolerance on the 2.495 V internal reference — a meaningful step up from the standard TL431's ±2.2% or even the ±1% A-grade. That tighter band means you can hold a 5 V or 12 V rail to within 25 mV without external trimming, which simplifies the BOM in precision supplies, isolated flyback feedback loops, and comparator threshold circuits. The adjustable output spans from the 2.495 V minimum up to 36 V, set by two external resistors. Cathode current sits at just 700 µA typical, while the shunt can sink 100 mA — enough to drive an optocoupler LED directly or bias a pass transistor. ## Temperature range and package — industrial and retrofit ready The TO-92-3 through-hole package (TO-226AA with formed leads) is the classic three-lead transistor outline. It's still the go-to for high-vibration assemblies, point-to-point wiring, or retrofitting older boards where an SMD footprint isn't available. The formed leads drop into standard 0.1-inch pitch holes and solder easily by hand or wave. This is a current-production part you can qualify into a new design without worrying about a forced respin. The base product number TL431 has been in continuous manufacture for decades across multiple vendors, so the supply base is broad — onsemi, TI, ST, NXP all make pin-compatible versions. The BQLPM suffix is onsemi's own ±0.5% TO-92 variant. If you're filling a BOM line or building a prototype run, submit an RFQ and we'll return a firm price and lead time from our multi-source channel. The ±0.5% grade is less commonly stocked than the standard ±2.2% TL431, so confirming availability before committing the line is the right move.","metaTitle":"TL431BQLPM Shunt Voltage Reference, ±0.5% Tolerance, TO-92-3","metaDescription":"TL431BQLPM adjustable shunt voltage reference from onsemi. ±0.5% tolerance, 2.495V ref, 36V max output, 100 mA drive, -40°C to 125°C. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Cut Tape (CT); Tape & Box (TB)","Tolerance":"±0.5%","Output Type":"Adjustable","Mounting Type":"Through Hole","Package / Case":"TO-226-3, TO-92-3 (TO-226AA) Formed Leads","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~125°C(TA)","Voltage - Output (Max)":"36 V","Supplier Device Package":"TO-92-3","Temperature Coefficient":"-","Voltage - Output (Min/Fixed)":"2.495V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7400","priceTiers":[{"qty":1,"price":"$0.74000","currency":"USD"},{"qty":10,"price":"$0.64700","currency":"USD"},{"qty":25,"price":"$0.60800","currency":"USD"},{"qty":100,"price":"$0.49610","currency":"USD"},{"qty":250,"price":"$0.46084","currency":"USD"},{"qty":500,"price":"$0.39220","currency":"USD"},{"qty":1000,"price":"$0.31376","currency":"USD"},{"qty":2000,"price":"$0.28435","currency":"USD"},{"qty":6000,"price":"$0.27750","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/2e8567ad04842692d5fb8309c69e90b6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL431BQLPM/alternatives.json"},"ai":{"faq":[{"question":"Is TL431BQLPM a direct replacement for the standard TL431?","answer":"Yes, the TL431BQLPM is pin-compatible and functionally identical to the standard TL431 in the same TO-92 package. The difference is the tighter ±0.5% initial tolerance versus the standard ±2.2% — it drops straight in wherever you need better setpoint accuracy without changing the PCB or external resistor values."},{"question":"Is TL431BQLPM obsolete or end-of-life?","answer":"No. There is no end-of-life notice or last-time-buy window — it is a current-production part suitable for new designs."},{"question":"What is the tolerance of TL431BQLPM?","answer":"The TL431BQLPM has a ±0.5% initial tolerance on the 2.495 V reference voltage. This is the B-grade selection, tighter than the standard TL431's ±2.2%."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL431BQLPM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL431BQLPM 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}}