{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040A30IDCKRE4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040A30IDCKRE4","canonicalUrl":"https://icboms.com/texas-instruments/LM4040A30IDCKRE4","factsUrl":"https://icboms.com/api/mcp/products/LM4040A30IDCKRE4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040A30IDCKRE4, shunt voltage reference, fixed 3V output, ±0.1% tolerance, 15 mA output, 82 µA cathode current, 35µVrms noise, SC-70-5 package, -40°C to 85°C.","salesMarkdown":"## Fixed 3V shunt reference for precision bias and ADC references The Texas Instruments LM4040A30IDCKRE4 is a precision shunt voltage reference with a fixed 3V output, ±0.1% initial tolerance, and a temperature coefficient of 100 ppm/°C. ## Output current and cathode current — sizing the bias resistor As a shunt reference, the LM4040A30IDCKRE4 sinks current through an external bias resistor connected between the supply and the cathode. The device can sink up to 15 mA of output current while requiring a minimum cathode current of 82 µA to maintain regulation. The bias resistor value must be chosen so that the cathode current stays between 82 µA and 15 mA over the full load and supply range — a common oversight that leads to dropout or excessive dissipation in tight-margin designs. ## SC-70-5 package — board-area fit and layout consideration The small footprint suits dense mixed-signal boards, but the low thermal mass means the bias resistor should be placed close to the cathode pin to minimise parasitic inductance and keep the reference stable under transient loads. The supplier device package is SC-70-5.","metaTitle":"LM4040A30IDCKRE4 3V Shunt Voltage Reference, ±0.1%, SC-70-5","metaDescription":"Texas Instruments LM4040A30IDCKRE4 precision shunt reference: fixed 3V output, ±0.1% tolerance, 35µVrms noise, SC-70-5 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR)","Tolerance":"±0.1%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"5-TSSOP, SC-70-5, SOT-353","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"15 mA","Current - Supply":"-","Current - Cathode":"82 µA","Base Product Number":"LM4040","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"35µVrms","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"SC-70-5","Temperature Coefficient":"100ppm/°C","Voltage - Output (Min/Fixed)":"3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040A30IDCKRE4/alternatives.json"},"ai":{"faq":[{"question":"Can LM4040A30IDCKRE4 replace LM4040A30IDBZR?","answer":"Both parts share the same LM4040A30 base — fixed 3V output, ±0.1% tolerance, and identical electrical specs. The difference is the package: LM4040A30IDCKRE4 is in SC-70-5, while LM4040A30IDBZR is in SOT-23-3. They are not pin-compatible; the board layout must match the package footprint."},{"question":"Is LM4040A30IDCKRE4 RoHS compliant?","answer":"RoHS compliance is standard for this series, but confirm the specific date-code compliance against your requirements at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040A30IDCKRE4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040A30IDCKRE4 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}}