{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4041C12IDBZR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM4041C12IDBZR","canonicalUrl":"https://icboms.com/texas-instruments/LM4041C12IDBZR","factsUrl":"https://icboms.com/api/mcp/products/LM4041C12IDBZR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM4041C12IDBZR, shunt voltage reference, fixed 1.225V output, ±0.5% tolerance, 12 mA output, 80 µA cathode current, SOT-23-3 package, -40°C to 85°C.","salesMarkdown":"The Texas Instruments LM4041C12IDBZR is a precision shunt voltage reference delivering a fixed 1.225V output with ±0.5% initial tolerance. It operates as a two-terminal shunt (Zener-like) device, requiring only a series resistor from the supply to set the bias current — no external pass transistor. The 80 µA minimum cathode current keeps the reference biased even in low-power rails, while the 12 mA maximum output current allows it to supply small loads directly or serve as a stable reference for an ADC or comparator. The ±0.5% initial tolerance means the output voltage at 25°C is guaranteed within 1.225V ±6.1 mV. For a 12-bit ADC with a 1.225V reference, that combined error budget is roughly ±1.5 LSB — acceptable for many industrial measurements but worth derating if the system targets 0.1% overall accuracy. ## Cathode current and output drive — sizing the bias resistor The LM4041C12IDBZR needs a minimum of 80 µA flowing into the cathode to maintain regulation. The series resistor from the supply to the cathode must be chosen so that (Vsupply − 1.225V) / R is at least 80 µA plus any load current drawn from the reference output. With a 5V supply and no load, a 47 kΩ resistor sets the bias at about 80 µA. If the reference also powers a small load (e.g., an op-amp input), the resistor value must drop to keep the total current above 80 µA while staying below the 12 mA maximum output.","metaTitle":"LM4041C12IDBZR Shunt Voltage Reference, 1.225V ±0.5%","metaDescription":"Texas Instruments LM4041C12IDBZR precision shunt reference: 1.225V fixed output, ±0.5% tolerance, 80 µA cathode current, SOT-23-3. Active, RoHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","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":"12 mA","Current - Supply":"-","Current - Cathode":"80 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":"$1.3200","priceTiers":[{"qty":1,"price":"$1.32000","currency":"USD"},{"qty":10,"price":"$1.17900","currency":"USD"},{"qty":25,"price":"$1.11880","currency":"USD"},{"qty":100,"price":"$0.91910","currency":"USD"},{"qty":250,"price":"$0.85920","currency":"USD"},{"qty":500,"price":"$0.75928","currency":"USD"},{"qty":1000,"price":"$0.59943","currency":"USD"},{"qty":3000,"price":"$0.56550","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/97120b7526b8b1f1915487ff781cf597.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM4041C12IDBZR/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance of LM4041C12IDBZR?","answer":"The initial tolerance is ±0.5%."},{"question":"Is LM4041C12IDBZR the same as LM4041C12IDBZT?","answer":"The two share the same die and electrical specs, but the suffix indicates packaging: LM4041C12IDBZR ships in Tape & Reel (suitable for automated pick-and-place), while LM4041C12IDBZT typically comes in Cut Tape or bulk. Confirm the exact ordering code for your assembly line's feeder requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM4041C12IDBZR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM4041C12IDBZR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}