{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MCP1541-I/TO","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"MCP1541-I-TO","canonicalUrl":"https://icboms.com/microchip/MCP1541-I-TO","factsUrl":"https://icboms.com/api/mcp/products/MCP1541-I%2FTO","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology MCP1541-I/TO series voltage reference, fixed 4.096V output, ±1% tolerance, 50ppm/°C, TO-92-3 through-hole package, bag.","salesMarkdown":"## 4.096V fixed reference in a breadboard-friendly TO-92 The MCP1541-I/TO is a series voltage reference from Microchip Technology that outputs a fixed 4.096 V with ±1% initial accuracy. That 4.096 V is a deliberate number — it maps cleanly to a 12-bit ADC's LSB at 1 mV per count, making it a natural bias for microcontrollers sampling analog sensors. Housed in a TO-92-3 through-hole package, it fits standard breadboards and perfboards without needing a breakout. The three leads — input, output, ground — are spaced at 0.1-inch pitch, so you can drop it into a solderless breadboard for a weekend prototype or solder it onto a stripboard for a permanent build. For a 10-bit ADC with a 4.096 V reference, the LSB is 4 mV — the noise floor sits well below one LSB, so the reference itself won't limit resolution. A 12-bit ADC (1 mV LSB) sees about 0.7 LSB of noise from the reference, which is acceptable for most sensor readouts. Temperature drift is 50 ppm/°C typical. If your design spans a wide temperature swing, budget that drift into the system accuracy, or consider a lower-drift reference for sub-mV precision. ## Supply current and output drive — battery-friendly The reference draws 120 µA quiescent supply current and can source up to 2 mA to the load. That 120 µA is low enough to leave on continuously in a battery-powered sensor node — it adds about 1 mAh per year of standby drain. The 2 mA output can bias an op-amp front-end or a microcontroller's reference input without an external buffer. Below 4.3 V the output drops out of regulation — don't feed it from a 3.3 V bus or a dying lithium cell below 3.6 V.","metaTitle":"MCP1541-I/TO Microchip Voltage Reference, 4.096V ±1% TO-92","metaDescription":"MCP1541-I/TO series voltage reference, 4.096V fixed output, ±1% tolerance, 50ppm/°C drift. TO-92-3 through-hole, active production, ROHS3. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Bag","Tolerance":"±1%","Output Type":"Fixed","Mounting Type":"Through Hole","Package / Case":"TO-226-3, TO-92-3 (TO-226AA)","Reference Type":"Series","Voltage - Input":"4.3V ~ 5.5V","lifecycle_stage":"eol_hot","Current - Output":"2 mA","Current - Supply":"120µA","Noise - 0.1Hz to 10Hz":"145µVp-p","Noise - 10Hz to 10kHz":"700µVrms","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"TO-92-3","Temperature Coefficient":"50ppm/°C","Voltage - Output (Min/Fixed)":"4.096V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.16","priceTiers":[{"qty":1,"price":"$1.16000","currency":"USD"},{"qty":25,"price":"$0.95400","currency":"USD"},{"qty":100,"price":"$0.85860","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a5bdfe796c213db83336ce2b4a40e3fa.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/MCP1541-I%2FTO/alternatives.json"},"ai":{"faq":[{"question":"What package does MCP1541-I/TO come in?","answer":"It comes in a TO-92-3 through-hole package (also called TO-226-3 or TO-226AA). The leads are on 0.1-inch pitch, breadboard-compatible. The supplier device package is TO-92-3."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/MCP1541-I-TO","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/MCP1541-I-TO 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}}