{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM385M3-1.2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM385M3-1.2","canonicalUrl":"https://icboms.com/texas-instruments/LM385M3-1.2","factsUrl":"https://icboms.com/api/mcp/products/LM385M3-1.2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM385M3-1.2, fixed 1.235 V shunt voltage reference, ±2.43%/+2.02% tolerance, SOT-23-3 surface-mount package, 20 mA max output current, 10 µA min cathode current, 0°C to 70°C operating range.","salesMarkdown":"## 1.235 V shunt reference — what the tolerance band means The LM385M3-1.2 is a fixed 1.235 V shunt voltage reference in a SOT-23-3 package. The output voltage tolerance spans -2.43% to +2.02%, which translates to a worst-case output window of roughly 1.205 V to 1.260 V — tight enough for a 12-bit ADC reference in a commercial-temperature system, but not a precision metrology-grade rail. New designs should target a pin-compatible shunt reference in the same SOT-23-3 footprint. ## Cathode current and output drive Minimum cathode current is 10 µA, which sets the lowest bias current the shunt needs to regulate. The low 10 µA floor makes this reference usable in battery-powered circuits where every microamp counts. Housed in a SOT-23-3 package (also listed as TO-236-3 / SC-59 / SOT-23-3), this is a standard three-pin shunt reference footprint. It is not specified for industrial or automotive environments.","metaTitle":"LM385M3-1.2 Shunt Voltage Reference, 1.235V, SOT-23-3, NRND","metaDescription":"LM385M3-1.2 fixed 1.235 V shunt reference in SOT-23-3. Tolerance -2.43%/+2.02%, 20 mA output, 10 µA min cathode current.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"-2.43%, +2.02%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Not For New Designs","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"20 mA","Current - Supply":"-","Current - Cathode":"10 µA","Base Product Number":"LM385","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"60µVrms","Operating Temperature":"0°C~70°C(TA)","Supplier Device Package":"SOT-23-3","Temperature Coefficient":"150ppm/°C","Voltage - Output (Min/Fixed)":"1.235V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.9800","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM385M3-1.2/alternatives.json"},"ai":{"faq":[{"question":"Is LM385M3-1.2 obsolete?","answer":"It is not yet formally discontinued, but the manufacturer is phasing it out. Existing production runs can still source it through independent distribution against an RFQ."},{"question":"What is the replacement for LM385M3-1.2?","answer":"For a drop-in replacement, look for a 1.235 V shunt reference in SOT-23-3 with a similar tolerance and 10 µA minimum cathode current. The LM385 series includes multiple voltage options; a pin-compatible sibling in the same family may serve as a second source, but no direct cross-reference is on file."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM385M3-1.2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM385M3-1.2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}