{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM385PSRE4-1-2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM385PSRE4-1-2","canonicalUrl":"https://icboms.com/texas-instruments/LM385PSRE4-1-2","factsUrl":"https://icboms.com/api/mcp/products/LM385PSRE4-1-2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM385PSRE4-1-2, shunt voltage reference, fixed 1.235 V output, ±2% tolerance, 20 mA output, 8-SOIC (0.209\", 5.30mm width), surface mount, 0°C~70°C.","salesMarkdown":"## Fixed 1.235 V shunt reference in an 8-SOIC As a shunt reference, it behaves like a two-terminal Zener — the 20 mA output current capability and 15 µA minimum cathode current define the bias resistor selection for the application. ## 20 ppm/°C drift and 60 µVrms noise The temperature coefficient is 20 ppm/°C typical, and noise from 10 Hz to 10 kHz is 60 µVrms — both figures are adequate for 8- to 10-bit ADC references in moderate environments. ## Obsolete — sourced through independent channels","metaTitle":"TI LM385PSRE4-1-2 Shunt Voltage Reference, 1.235V Fixed","metaDescription":"Texas Instruments LM385PSRE4-1-2 shunt voltage reference, fixed 1.235 V output, ±2% tolerance, 20 mA output, 8-SOIC.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR)","Tolerance":"±2%","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.209\\\", 5.30mm Width)","Product Status":"Obsolete","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":"8-SO","Temperature Coefficient":"20ppm/°CTypical","Voltage - Output (Min/Fixed)":"1.235V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM385PSRE4-1-2/alternatives.json"},"ai":{"faq":[{"question":"Can LM385PSRE4-1-2 be used in a 3.3V system?","answer":"Yes, a shunt reference like the LM385PSRE4-1-2 can be used in a 3.3 V system. The bias resistor must be chosen to supply the cathode current (minimum 15 µA) plus the load current while keeping the total below the 20 mA output rating."},{"question":"What is the replacement for LM385PSRE4-1-2?","answer":"No official replacement or successor part is listed by Texas Instruments for the LM385PSRE4-1-2. For a pin-compatible alternative, consider the LM385-1.2 series in the same 8-SOIC package — confirm the tolerance and temperature range match your BOM requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM385PSRE4-1-2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM385PSRE4-1-2 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}}