{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM4041AICT-1.2","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"LM4041AICT-1.2","canonicalUrl":"https://icboms.com/stmicroelectronics/LM4041AICT-1.2","factsUrl":"https://icboms.com/api/mcp/products/LM4041AICT-1.2","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics LM4041AICT-1.2 precision shunt voltage reference, fixed 1.225 V output, ±0.1% tolerance, 100 ppm/°C temperature coefficient, 12 mA output current, 50 µA cathode current, SOT-353 package, -40°C to 85°C.","salesMarkdown":"## 1.225 V shunt reference — the accuracy floor for your ADC or comparator The STMicroelectronics LM4041AICT-1.2 is a precision shunt voltage reference with a fixed 1.225 V output. It uses a shunt (two-terminal) topology, so it behaves like a Zener diode — you bias it with a resistor from the supply, and the reference regulates the voltage across itself by sinking current through the cathode. The initial tolerance is ±0.1%, which means the output voltage at 25 °C is guaranteed within 1.225 V ± 1.225 mV. That is tight enough for a 12-bit ADC reference without external trimming, provided the temperature drift is accounted for in the system budget. Temperature coefficient is 100 ppm/°C. ## Shunt topology — bias resistor and cathode current matter The shunt reference requires an external series resistor from the supply to the cathode. The resistor must supply the load current plus the minimum cathode current of 50 µA, while staying below the 12 mA maximum output current. The 60 µVrms noise spec (10 Hz to 10 kHz) is low enough for most precision analogue circuits. If your design needs lower noise, a 0.1 µF bypass capacitor from cathode to anode reduces the wideband noise further — the shunt topology responds well to a local decoupling cap. ## Package and footprint — SOT-353 with SOT-323-5 supplier device The LM4041AICT-1.2 is offered in a 5-lead SOT-353 package, also described as SC-70-5. The small size suits space-constrained designs but demands careful solder-paste stencil design to avoid bridging on the fine-pitch leads. Mounting is surface mount only. ## Lifecycle and sourcing The base product number LM4041 covers a family of fixed and adjustable shunt references — if you need a different voltage or tolerance, the LM4041 series offers several options in the same SOT-353 footprint.","metaTitle":"STMicroelectronics LM4041AICT-1.2 Shunt Voltage Reference","metaDescription":"STMicroelectronics LM4041AICT-1.2 precision shunt voltage reference, fixed 1.225 V output, ±0.1% tolerance, 100 ppm/°C drift, SOT-353 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"STMicroelectronics","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±0.1%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"5-TSSOP, SC-70-5, SOT-353","Product Status":"Active","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"12 mA","Current - Supply":"-","Current - Cathode":"50 µA","Base Product Number":"LM4041","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"60µVrms","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"SOT-323-5","Temperature Coefficient":"100ppm/°C","Voltage - Output (Min/Fixed)":"1.225V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7290","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/06ccf6ae1f4c6fea187fcb5187905d18.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/LM4041AICT-1.2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/LM4041AICT-1.2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T17:46:40.483Z","lastPublished":"2026-07-16T17:46:40.483Z","indexable":true}}