{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"L7912ACD2T-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"L7912ACD2T-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/L7912ACD2T-TR","factsUrl":"https://icboms.com/api/mcp/products/L7912ACD2T-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics L7912ACD2T-TR, fixed -12V negative linear regulator, 1.5A output, 1.1V dropout at 1A, PSRR 60dB at 120Hz, D2PAK (TO-263-3) surface-mount package, 0°C to 125°C operating temperature.","salesMarkdown":"## Negative rail regulator for industrial and analog supplies The STMicroelectronics L7912ACD2T-TR is a fixed -12 V output linear regulator delivering up to 1.5 A. It is a negative-voltage complement to the 78xx positive regulator family. ## Dropout and load — sizing the input rail The maximum dropout voltage is 1.1 V at 1 A output. The 3 mA quiescent current is negligible in most designs but should be included in the thermal budget for the input rectifier. The 1.5 A output rating is the absolute maximum. ## Protection features reduce external component count Built-in over-temperature and short-circuit protection mean the L7912ACD2T-TR can survive an output short or thermal overload without external crowbar or foldback circuits. This simplifies the BOM for point-of-load negative rails in motor drives and industrial PSUs where fault conditions are expected. ## Sourcing an obsolete -12 V regulator The L7912ACD2T-TR is listed as obsolete by STMicroelectronics. No official successor is recorded in the available lifecycle data.","metaTitle":"STMicroelectronics L7912ACD2T-TR -12V Fixed Linear Regulator","metaDescription":"ST L7912ACD2T-TR -12V fixed output, 1.5A negative linear regulator in D2PAK. PSRR 60dB at 120Hz, over-temp/short-circuit protection.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"STMicroelectronics","PSRR":"60dB (120Hz)","Series":"-","Package":"Tape & Reel (TR)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-263-3, D2PAK (2 Leads + Tab), TO-263AB","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"1.5A","Base Product Number":"L7912","Protection Features":"Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Negative","Operating Temperature":"0°C ~ 125°C","Voltage - Input (Max)":"-35V","Voltage Dropout (Max)":"1.1V @ 1A (Typ)","Voltage - Output (Max)":"-","Supplier Device Package":"D2PAK","Current - Quiescent (Iq)":"3 mA","Voltage - Output (Min/Fixed)":"-12V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4808","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/1cec72d055257a6e2d03b4342d6041cf.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of the L7912ACD2T-TR?","answer":"The L7912ACD2T-TR has a power supply rejection ratio of 60 dB at 120 Hz. This is adequate for most industrial analog rails but may not meet the ripple rejection requirements of high-precision instrumentation without additional post-filtering."},{"question":"What package does the L7912ACD2T-TR come in?","answer":"The L7912ACD2T-TR is supplied in a D2PAK (TO-263-3) surface-mount package, shipped in Tape & Reel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/L7912ACD2T-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/L7912ACD2T-TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T19:13:46.723Z","lastPublished":"2026-07-16T19:13:46.723Z","indexable":true}}