{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL1431IDT","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"TL1431IDT","canonicalUrl":"https://icboms.com/stmicroelectronics/TL1431IDT","factsUrl":"https://icboms.com/api/mcp/products/TL1431IDT","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics TL1431IDT adjustable shunt voltage reference, ±0.4% tolerance, 100 mA output, 2.5V to 36V, 8-SOIC surface mount, -40°C to 105°C.","salesMarkdown":"## 8-SOIC footprint, adjustable shunt regulation The TL1431IDT is a three-terminal adjustable shunt voltage reference from STMicroelectronics, packaged in an 8-SOIC (0.154\", 3.90 mm width) for surface-mount assembly. The reference type is shunt, meaning it operates as a programmable Zener diode — the output voltage is set by two external resistors and remains stable across load and temperature. The headline tolerance is ±0.4%, which defines the initial accuracy of the reference voltage at 25°C. For a 2.5 V nominal output, this translates to a maximum deviation of ±10 mV — tight enough for precision power-supply monitoring, A/D converter references, or feedback loops in isolated DC-DC converters where the setpoint error directly affects the output regulation. ## Output range and drive capability The output voltage is adjustable from a minimum of 2.5 V up to a maximum of 36 V, set by the external resistor divider ratio. The 100 mA output current rating defines the maximum cathode current the device can sink while maintaining regulation — this is the load-driving limit for the shunt configuration, not a source current. Minimum cathode current is 1 mA, which is the lowest operating current required to keep the reference in regulation. Below this threshold the device may not maintain its specified accuracy. The temperature coefficient is 100 ppm/°C, meaning the output voltage drifts by 0.01% per degree Celsius — at the full 105°C operating limit the drift from 25°C is roughly 0.8% of the set voltage, which is additive to the initial tolerance. ## Active production, industrial temperature grade RoHS3 compliance (2011/65/EU + 2015/863) is confirmed, with no exemptions declared. The 8-SOIC package is supplied in Tape & Reel (TR) or Cut Tape (CT) options, both standard for automated pick-and-place assembly.","metaTitle":"STMicroelectronics TL1431IDT Shunt Reference, ±0.4%, 8-SOIC","metaDescription":"STMicroelectronics TL1431IDT adjustable shunt voltage reference, ±0.4% tolerance, 100 mA output, 8-SOIC. Active production, ROHS3 compliant. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±0.4%","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","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":"8-SOIC","Temperature Coefficient":"100ppm/°C","Voltage - Output (Min/Fixed)":"2.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.61","priceTiers":[{"qty":1,"price":"$0.61000","currency":"USD"},{"qty":10,"price":"$0.54000","currency":"USD"},{"qty":25,"price":"$0.50720","currency":"USD"},{"qty":100,"price":"$0.41400","currency":"USD"},{"qty":250,"price":"$0.38452","currency":"USD"},{"qty":500,"price":"$0.32724","currency":"USD"},{"qty":1000,"price":"$0.26179","currency":"USD"},{"qty":2500,"price":"$0.23725","currency":"USD"},{"qty":5000,"price":"$0.22089","currency":"USD"},{"qty":12500,"price":"$0.21271","currency":"USD"},{"qty":25000,"price":"$0.20452","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/996cef81569de296d9e0e139436fbf9c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TL1431IDT/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of the TL1431IDT and why does it matter?","answer":"The TL1431IDT has a ±0.4% initial tolerance on the reference voltage. For a 2.5 V output this is ±10 mV maximum deviation at 25°C, which sets the floor for system accuracy in applications like precision regulators or ADC references where the voltage setpoint error directly impacts measurement or regulation performance."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/TL1431IDT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/TL1431IDT 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}}