{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4041EIM3X-1.2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4041EIM3X-1.2","canonicalUrl":"https://icboms.com/texas-instruments/LM4041EIM3X-1.2","factsUrl":"https://icboms.com/api/mcp/products/LM4041EIM3X-1.2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4041EIM3X-1.2, precision shunt voltage reference, fixed 1.225V output, ±2% tolerance, 65 µA cathode current, 12 mA output, SOT-23-3 surface-mount package, -40°C to 85°C.","salesMarkdown":"## Shunt reference in a SOT-23-3 — what this part does The Texas Instruments LM4041EIM3X-1.2 is a precision shunt voltage reference that delivers a fixed 1.225 V output with ±2 % tolerance. It operates as a two-terminal device — the cathode current sets the reference voltage across the load, and the part regulates by shunting excess current to ground. With a cathode current of just 65 µA and a maximum output current of 12 mA, it fits low-power bias and ADC reference applications where board space is tight. ## 1.225 V at ±2 % — what the tolerance buys you The ±2 % initial accuracy on the 1.225 V output means the reference voltage can sit anywhere between roughly 1.200 V and 1.250 V at 25 °C. For an 8-bit ADC with a 1.225 V reference, that translates to about ±5 LSB of full-scale uncertainty before any temperature drift is factored in. If your design needs tighter than 2 % initial accuracy, you will want to look at the A-grade or B-grade variants in the LM4041 family, or move to a series reference like the LM4132. ## Temperature drift and noise floor Noise from 10 Hz to 10 kHz is specified at 20 µVrms — low enough for most 12-bit ADC references but worth budgeting for in a 16-bit system. The three-pin footprint is compact — roughly 2.9 mm by 1.3 mm — and the shipping options include Tape & Reel and Cut Tape.","metaTitle":"LM4041EIM3X-1.2 Shunt Voltage Reference, 1.225V, ±2%","metaDescription":"Texas Instruments LM4041EIM3X-1.2 precision shunt reference, 1.225V fixed output, ±2% tolerance, 65 µA cathode current, SOT-23-3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±2%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Obsolete","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"12 mA","Current - Supply":"-","Current - Cathode":"65 µA","Base Product Number":"LM4041","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"20µVrms","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"150ppm/°C","Voltage - Output (Min/Fixed)":"1.225V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/26af4fd2ab0c421228a4f1c33eae6ec2.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4041EIM3X-1.2/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for LM4041EIM3X-1.2?","answer":"For a functionally similar shunt reference in the same voltage class, consider the active LM4041 variants with tighter tolerance grades, or a series reference like the LM4132 if your design can accommodate the different topology and package."},{"question":"What is the tolerance of LM4041EIM3X-1.2?","answer":"The LM4041EIM3X-1.2 has a ±2 % tolerance on its fixed 1.225 V output."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4041EIM3X-1.2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4041EIM3X-1.2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}