{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4040CIM3X-5.0/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4040CIM3X-5.0-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM4040CIM3X-5.0-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM4040CIM3X-5.0%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4040CIM3X-5.0/NOPB precision shunt voltage reference, fixed 5 V output, ±0.5% tolerance, 100 ppm/°C, 15 mA output, 80 µA cathode current, SOT-23-3, -40°C to 85°C.","salesMarkdown":"## 5 V shunt reference with ±0.5% initial accuracy The Texas Instruments LM4040CIM3X-5.0/NOPB is a precision shunt voltage reference that delivers a fixed 5 V output with a ±0.5% initial tolerance. The shunt topology means it operates like a two-terminal Zener — the load and the bias resistor share the same node, and the 80 µA minimum cathode current keeps the reference in regulation down to light loads. Output current capability is 15 mA, which covers the bias current for a typical ADC reference input or a comparator threshold divider. ## SOT-23-3 footprint and supply routing The SOT-23-3 (TO-236-3 / SC-59) package is a three-pin surface-mount footprint with 0.95 mm pitch. The cathode pin connects to the positive rail through the bias resistor; the anode pin goes to ground. The reference pin is the output — no separate feedback divider needed because the output is fixed at 5 V. The base product number LM4040 spans multiple voltage options and tolerance grades; the C grade in this code indicates the ±0.5% bin.","metaTitle":"LM4040CIM3X-5.0/NOPB Shunt Voltage Reference","metaDescription":"Texas Instruments LM4040CIM3X-5.0/NOPB precision shunt voltage reference, fixed 5 V output, ±0.5% tolerance, 100 ppm/°C drift, SOT-23-3, active production.","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); 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":"Active","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"15 mA","Current - Supply":"-","Current - Cathode":"80 µA","Base Product Number":"LM4040","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"80µVrms","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"100ppm/°C","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7800","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/db47fc1a31c797b619d88478be755429.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4040CIM3X-5.0%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of LM4040CIM3X-5.0/NOPB?","answer":"The initial output voltage tolerance is ±0.5% at 25°C. This is the C-grade bin in the LM4040 family; the A and B grades offer tighter tolerances if your ADC reference budget requires better than 25 mV accuracy at 5 V."},{"question":"Can LM4040CIM3X-5.0/NOPB replace LM4040CIM3-5.0?","answer":"The LM4040CIM3-5.0 is the non-RoHS version. The /NOPB suffix indicates lead-free / RoHS-compliant construction. Both share the same electrical specifications — fixed 5 V output, ±0.5% tolerance, SOT-23-3 package. The /NOPB variant is the drop-in replacement for RoHS-required BOMs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4040CIM3X-5.0-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4040CIM3X-5.0-NOPB 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}}