{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4041CEM3-1.2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4041CEM3-1.2","canonicalUrl":"https://icboms.com/texas-instruments/LM4041CEM3-1.2","factsUrl":"https://icboms.com/api/mcp/products/LM4041CEM3-1.2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4041CEM3-1.2, precision shunt voltage reference, fixed 1.225V output, ±0.5% tolerance, 12 mA output, 68 µA cathode current, SOT-23-3 package, -40°C to 125°C.","salesMarkdown":"## Fixed 1.225 V shunt reference in a SOT-23-3 The LM4041CEM3-1.2 is a precision shunt voltage reference from Texas Instruments, delivering a fixed 1.225 V output with a ±0.5% initial tolerance. It operates as a two-terminal shunt (like a Zener), requiring only a cathode resistor to set the bias current. The SOT-23-3 package and surface-mount footprint make it a compact fit for dense PCB layouts in industrial control, automotive modules, and portable instrumentation. ## Output current and cathode current — bias budget Rated output current is 12 mA. Minimum cathode current is 68 µA. ## NRND — plan a second source or successor now New designs should select an alternative from the same LM4041 family — the base product number LM4041 covers multiple voltage options and tolerances in the same SOT-23-3 footprint. ## Noise and temperature drift — signal-chain impact Wideband noise from 10 Hz to 10 kHz is 20 µVrms, which is low enough for 12-bit ADC references without additional filtering in most industrial signal chains. The temperature coefficient is 100 ppm/°C, meaning the output voltage shifts by roughly 122 µV over a 100°C swing — a factor to budget in the system accuracy calculation.","metaTitle":"LM4041CEM3-1.2 Shunt Voltage Reference, 1.225V ±0.5%","metaDescription":"LM4041CEM3-1.2 precision shunt reference: fixed 1.225V output, ±0.5% tolerance, 12 mA output, SOT-23-3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±0.5%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Not For New Designs","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"12 mA","Current - Supply":"-","Current - Cathode":"68 µA","Base Product Number":"LM4041","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"20µVrms","Operating Temperature":"-40°C~125°C(TA)","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"100ppm/°C","Voltage - Output (Min/Fixed)":"1.225V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d2855eaed3a119e1ade8ae46dfbd1dff.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4041CEM3-1.2/alternatives.json"},"ai":{"faq":[{"question":"Is LM4041CEM3-1.2 obsolete?","answer":"It remains available for existing production but is on a lifecycle path toward discontinuation. For new designs, choose an alternative from the same LM4041 family."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4041CEM3-1.2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4041CEM3-1.2 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}}