{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL431CZ-AP","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"TL431CZ-AP","canonicalUrl":"https://icboms.com/stmicroelectronics/TL431CZ-AP","factsUrl":"https://icboms.com/api/mcp/products/TL431CZ-AP","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics TL431CZ-AP, adjustable shunt voltage reference, ±2.21% tolerance, 100 mA output, 2.495 V minimum, 36 V maximum, TO-92-3 through-hole package, commercial temperature range 0°C to 70°C.","salesMarkdown":"## Adjustable shunt reference — what the 2.495 V minimum and 36 V maximum mean for your rail The TL431CZ-AP is an adjustable shunt voltage reference from STMicroelectronics, part of the industry-standard TL431 family. Its output is set with two external resistors from a minimum of 2.495 V up to 36 V, covering common 3.3 V, 5 V, 12 V, 24 V, and 30 V rails. The 100 mA cathode current rating defines the shunt path's maximum current — size the cathode resistor so that the total current (load plus reference quiescent) stays under 100 mA at the lowest input voltage. The ±2.21% tolerance is a general-purpose grade; for designs needing better than 1%, a tighter-tolerance sibling like the TL1431 would be the next step. The TO-92 through-hole package with formed leads suits hand-assembly, prototyping, and legacy board retrofits where SMD rework is impractical. The base product number TL431 is a long-running industry standard with multiple qualified sources, so supply risk is low even if this specific package variant tightens. Because the part is active and widely second-sourced across the TL431 family, lead times tend to be stable, but the exact position is verified per request. No single-source exposure here — qualify the alternate now if you want a second BOM leg.","metaTitle":"STMicroelectronics TL431CZ-AP Shunt Reference","metaDescription":"TL431CZ-AP adjustable shunt voltage reference, ±2.21% tolerance, 100 mA output, 0°C–70°C, TO-92 through-hole. Request quote for current pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"STMicroelectronics","Series":"-","Package":"Cut Tape (CT); Tape & Box (TB)","Tolerance":"±2.21%","Output Type":"Adjustable","Mounting Type":"Through Hole","Package / Case":"TO-226-2, TO-92-2 (TO-226AC) (Formed Leads)","Product Status":"Active","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"100 mA","Current - Supply":"-","Current - Cathode":"1 mA","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":"TO-92-3","Temperature Coefficient":"-","Voltage - Output (Min/Fixed)":"2.495V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4800","priceTiers":[{"qty":1,"price":"$0.48000","currency":"USD"},{"qty":10,"price":"$0.39100","currency":"USD"},{"qty":25,"price":"$0.35800","currency":"USD"},{"qty":100,"price":"$0.26630","currency":"USD"},{"qty":250,"price":"$0.24132","currency":"USD"},{"qty":500,"price":"$0.19970","currency":"USD"},{"qty":1000,"price":"$0.14978","currency":"USD"},{"qty":2000,"price":"$0.13738","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/d3856169bdff63c55d41eeae5a91cadc.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL431CZ-AP/alternatives.json"},"ai":{"faq":[{"question":"What is the equivalent of TL431CZ-AP?","answer":"A functional equivalent with tighter tolerance is the TL1431ACL5T, which offers ±0.25% tolerance versus the TL431CZ-AP's ±2.21%. The TL1431ACL5T is surface-mount (SOT-23-5) and specified for -20°C to 70°C, so the package and temperature range differ. For a drop-in through-hole replacement, any standard TL431 in TO-92 with the same pinout and ±2% or better tolerance will work."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/TL431CZ-AP","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/TL431CZ-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}}