{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM385LPR-1-2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM385LPR-1-2","canonicalUrl":"https://icboms.com/texas-instruments/LM385LPR-1-2","factsUrl":"https://icboms.com/api/mcp/products/LM385LPR-1-2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM385LPR-1-2 shunt voltage reference, fixed 1.235 V output, ±2% tolerance, 20 ppm/°C typical drift, 15 µA cathode current, TO-92-3 through-hole, 0°C to 70°C.","salesMarkdown":"It delivers a stable 1.235 V output with ±2% initial tolerance and a typical temperature coefficient of 20 ppm/°C. ## Cathode current and output drive The shunt can sink up to 20 mA of output current, but the real design constraint is the minimum cathode current of 15 µA. Below that, the reference drops out of regulation. For a 1.235 V rail pulling 1 mA, a 1.2 kΩ series resistor from a 3.3 V supply biases the shunt well above the 15 µA floor. The 60 µVrms noise spec (10 Hz to 10 kHz) is clean enough for most ADC references in the commercial temperature band.","metaTitle":"LM385LPR-1-2 Shunt Voltage Reference, 1.235 V Fixed, ±2%","metaDescription":"Texas Instruments LM385LPR-1-2 shunt voltage reference, fixed 1.235 V output, ±2% tolerance, 20 ppm/°C drift. TO-92-3 through-hole.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Tolerance":"±2%","Output Type":"Fixed","Mounting Type":"Through Hole","Package / Case":"TO-226-3, TO-92-3 (TO-226AA) Formed Leads","Product Status":"Active","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"20 mA","Current - Supply":"-","Current - Cathode":"15 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":"TO-92-3","Temperature Coefficient":"20ppm/°CTypical","Voltage - Output (Min/Fixed)":"1.235V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6900","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM385LPR-1-2/alternatives.json"},"ai":{"faq":[{"question":"Is LM385LPR-1-2 equivalent to LM385Z?","answer":"The LM385Z is a sibling in the same LM385 family, also a 1.235 V shunt reference, but typically offered in a TO-92 package with a wider temperature range. The LM385LPR-1-2 is the Tape & Reel variant with formed leads and commercial temperature grade. They are functionally similar but verify the package and temperature grade against your BOM."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM385LPR-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/LM385LPR-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}}