{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4041BIM3X-1.2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4041BIM3X-1.2","canonicalUrl":"https://icboms.com/texas-instruments/LM4041BIM3X-1.2","factsUrl":"https://icboms.com/api/mcp/products/LM4041BIM3X-1.2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4041BIM3X-1.2, precision shunt voltage reference, fixed 1.225V output, ±0.2% tolerance, 100ppm/°C drift, 20µVrms noise, SOT-23-3 package, -40°C to 85°C.","salesMarkdown":"## Obsolete — sourcing this precision shunt reference This is a shunt (two-terminal) voltage reference with a fixed 1.225V output. The 20µVrms noise over 10Hz to 10kHz keeps the reference clean for low-frequency measurement. ## Biasing the shunt — cathode current and load limits A shunt reference needs a bias resistor from the supply to the cathode. The minimum cathode current is 65 µA; the maximum output current is 12 mA. The resistor must supply both the load current and the cathode current, keeping the cathode current between 65 µA and 12 mA over all conditions. In a 3.3V circuit, a 1.6 kΩ resistor biases the reference at about 1.3 mA — well within range. ## SOT-23-3 package — footprint and rework The LM4041BIM3X-1.2 comes in a standard SOT-23-3 package (TO-236-3 / SC-59 compatible). Surface-mount only. The three-pin layout is straightforward: cathode, anode, and no-connect. For rework, a standard hot-air profile at 260°C peak works — no moisture sensitivity concern beyond the standard MSL1 bake if the tape has been exposed.","metaTitle":"LM4041BIM3X-1.2 Shunt Voltage Reference, 1.225V ±0.2%","metaDescription":"Texas Instruments LM4041BIM3X-1.2 precision shunt reference, 1.225V fixed output, ±0.2% tolerance, 100ppm/°C drift, 20µVrms noise.","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":"±0.2%","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":"100ppm/°C","Voltage - Output (Min/Fixed)":"1.225V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/26af4fd2ab0c421228a4f1c33eae6ec2.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4041BIM3X-1.2/alternatives.json"},"ai":{"faq":[{"question":"Is LM4041BIM3X-1.2 obsolete?","answer":"Yes, the LM4041BIM3X-1.2 is listed as obsolete by Texas Instruments. No direct replacement is officially designated."},{"question":"Can LM4041BIM3X-1.2 be used as a 1.2V reference?","answer":"Yes. The fixed output is 1.225V, which is the standard 1.2V-class reference voltage. The ±0.2% tolerance means the output is between 1.222V and 1.228V at 25°C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4041BIM3X-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/LM4041BIM3X-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}}