{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MC79L12ACDR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"MC79L12ACDR","canonicalUrl":"https://icboms.com/texas-instruments/MC79L12ACDR","factsUrl":"https://icboms.com/api/mcp/products/MC79L12ACDR","rawCanonicalId":null},"summary":{"shortDescription":"ON Semiconductor MC79L12ACDR, fixed negative linear regulator, -12V output, 100mA, 42dB PSRR (120Hz), 1.7V dropout at 40mA, 0°C to 125°C, 8-SOIC surface mount, ROHS3 compliant.","salesMarkdown":"## What this -12 V regulator brings to the board The ON Semiconductor MC79L12ACDR is a fixed -12 V negative linear regulator in an 8-SOIC surface-mount package, rated for 100 mA continuous output. The 42 dB PSRR at 120 Hz attenuates rectified mains ripple. ## Package and mounting — what the 8-SOIC footprint means The 8-SOIC body (3.90 mm width, 0.154\" pitch) is the standard narrow SOIC footprint. It's a direct drop-in for any 8-pin SOIC negative regulator layout — no adapter board, no lead bending. The surface-mount package suits automated assembly lines and rework stations alike. The supplier device package is 8-SOIC, same as the case code, so the pick-and-place file is straightforward. Tape & Reel or Cut Tape options cover both production runs and prototype quantities. ## Temperature grade — where it lives and where it doesn't Rated 0°C to 125°C operating junction temperature. The 125°C upper limit is junction temp, not ambient — derate for self-heating at 100 mA. ## Sourcing and lifecycle — active and available Product status is Active, with ROHS3 compliance. For the BOM line, that means no supply-risk premium and no need to qualify a drop-in replacement for a production run.","metaTitle":"MC79L12ACDR -12V Fixed Negative Linear Regulator, 100mA","metaDescription":"MC79L12ACDR -12V fixed output negative linear regulator. 100mA output, 42dB PSRR at 120Hz, 1.7V dropout at 40mA. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PSRR":"42dB (120Hz)","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Current - Output":"100mA","Protection Features":"Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Negative","Operating Temperature":"0°C ~ 125°C","Voltage - Input (Max)":"-27V","Voltage Dropout (Max)":"1.7V @ 40mA","Supplier Device Package":"8-SOIC","Voltage - Output (Min/Fixed)":"-12V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.42","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.42000","currency":"USD"},{"qty":10,"price":"$0.36200","currency":"USD"},{"qty":25,"price":"$0.33760","currency":"USD"},{"qty":100,"price":"$0.27010","currency":"USD"},{"qty":250,"price":"$0.25080","currency":"USD"},{"qty":500,"price":"$0.21222","currency":"USD"},{"qty":1000,"price":"$0.16398","currency":"USD"},{"qty":2500,"price":"$0.14951","currency":"USD"},{"qty":5000,"price":"$0.13987","currency":"USD"},{"qty":12500,"price":"$0.13650","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1c535c60675cee4e6039217ec6249978.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the operating temperature limits of the MC79L12ACDR?","answer":"The operating junction temperature range is 0°C to 125°C. This is a commercial-to-industrial grade part — suitable for indoor and conditioned environments, not for -40°C cold-start applications."},{"question":"What is the PSRR of the MC79L12ACDR?","answer":"The power supply rejection ratio is 42 dB at 120 Hz. That attenuates full-wave rectified mains ripple by a factor of roughly 125 — adequate for most analog bias rails when paired with proper input and output bypass capacitors."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/MC79L12ACDR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/MC79L12ACDR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}