{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4041AIZ-1.2/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4041AIZ-1.2-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM4041AIZ-1.2-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM4041AIZ-1.2%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4041 series precision shunt voltage reference, LM4041AIZ-1.2/NOPB, 1.225 V fixed output, ±0.1% tolerance, 100 ppm/°C, 65 µA cathode current, TO-92-3 through-hole package.","salesMarkdown":"## 1.225 V shunt reference with ±0.1% initial accuracy The Texas Instruments LM4041AIZ-1.2/NOPB is a precision shunt voltage reference that delivers a fixed 1.225 V output with a tight ±0.1% initial tolerance. It is part of the LM4041 family, designed for applications where a stable, low-drift reference voltage is needed — think ADC reference biasing, comparator thresholds, or power-supply monitoring in industrial and consumer gear. As a shunt reference, it behaves like a Zener diode: you set the bias current with a single series resistor from the supply rail. The device regulates by shunting current to ground, so the load sees a steady 1.225 V as long as the cathode current stays above 65 µA and below the 12 mA maximum. ## Temperature drift and noise — the precision story The temperature coefficient is rated at 100 ppm/°C, which means the output voltage shifts by about 122.5 µV for every 10 °C change. Wideband noise from 10 Hz to 10 kHz is specified at 20 µVrms. That is low enough to not limit a 12-bit ADC's SNR in most signal-chain designs, though a small bypass cap (0.1 µF) across the output helps knock down high-frequency pickup from the board. ## Through-hole TO-92 — easy to breadboard, easy to replace The LM4041AIZ-1.2/NOPB comes in a TO-92-3 through-hole package (TO-226AA). That is the classic three-lead transistor-style package — cathode, anode, and no-connect. It is a natural fit for prototyping on perfboard or stripboard, and for production runs where wave-solder is the assembly process. For automated pick-and-place, look for the SOT-23 surface-mount variant of the LM4041 family. You can design it into a new BOM today and expect multi-year supply continuity.","metaTitle":"Texas Instruments LM4041AIZ-1.2/NOPB Shunt Reference","metaDescription":"Texas Instruments LM4041AIZ-1.2/NOPB precision shunt voltage reference, 1.225 V fixed output, ±0.1% tolerance, 100 ppm/°C drift, TO-92-3 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Bulk","Tolerance":"±0.1%","Output Type":"Fixed","Mounting Type":"Through Hole","Package / Case":"TO-226-3, TO-92-3 (TO-226AA)","Product Status":"Active","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":"TO-92-3","Temperature Coefficient":"100ppm/°C","Voltage - Output (Min/Fixed)":"1.225V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.5800","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d2855eaed3a119e1ade8ae46dfbd1dff.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4041AIZ-1.2%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of LM4041AIZ-1.2/NOPB?","answer":"The initial tolerance is ±0.1% at 25°C. That is the tightest grade in the LM4041 family — the standard 'I' grade. For comparison, the 'C' grade parts are ±0.5%, so this is the one to pick when the ADC reference needs better than 1% absolute accuracy without trimming."},{"question":"What is the cathode current of LM4041AIZ-1.2/NOPB?","answer":"The minimum cathode current required for regulation is 65 µA, and the maximum continuous current is 12 mA. Design the series resistor to supply at least 65 µA to the reference plus the load current. For a typical 5 V supply and a 10 kΩ load, a 1.5 kΩ resistor works well."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4041AIZ-1.2-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/LM4041AIZ-1.2-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}}