{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"L4940V85","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"L4940V85","canonicalUrl":"https://icboms.com/stmicroelectronics/L4940V85","factsUrl":"https://icboms.com/api/mcp/products/L4940V85","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics L4940V85, fixed 8.5V positive LDO, 1.5A output, TO-220-3 through-hole, 68dB PSRR at 120Hz, 0.9V max dropout at full load.","salesMarkdown":"The L4940V85 is a single-output, fixed 8.5V positive LDO regulator from STMicroelectronics, rated for 1.5A continuous output. The 68 dB PSRR at 120 Hz tells you this part can clean up rectified line ripple — useful if you're feeding an analog front-end or a sensor bias from an unregulated wall wart. The 0.9V max dropout at 1.5A means you need at least 9.4V on the input to hold regulation; below that the output starts to sag. STMicroelectronics lists the L4940V85 as Obsolete. That means no new production — no LTB, no future fab runs. We source per RFQ; availability and price are confirmed at quote time. The TO-220-3 package is through-hole, so rework is straightforward if you're pulling from a reel or tube. ## Protection features and temp range for industrial use On-chip protection covers over-temperature, reverse polarity, and short circuit. Quiescent current is 8 mA typical; maximum supply current is 50 mA. The fixed 8.5V output is not adjustable.","metaTitle":"L4940V85 STMicroelectronics 8.5V 1.5A LDO Regulator TO-220","metaDescription":"L4940V85 obsolete LDO from ST, fixed 8.5V output, 1.5A, 0.9V dropout, 68dB PSRR, TO-220-3. Sourced per RFQ — confirm BOM fit and lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Obsolete","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"STMicroelectronics","PSRR":"68dB (120Hz)","Series":"-","Package":"Tube","Output Type":"Fixed","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"1.5A","Base Product Number":"L4940","Protection Features":"Over Temperature, Reverse Polarity, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 150°C","Voltage - Input (Max)":"17V","Voltage Dropout (Max)":"0.9V @ 1.5A","Current - Supply (Max)":"50 mA","Voltage - Output (Max)":"-","Supplier Device Package":"TO-220","Current - Quiescent (Iq)":"8 mA","Voltage - Output (Min/Fixed)":"8.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.3000","priceTiers":[{"qty":1,"price":"$2.42000","currency":"USD"},{"qty":10,"price":"$2.17200","currency":"USD"},{"qty":25,"price":"$2.04920","currency":"USD"},{"qty":100,"price":"$1.74600","currency":"USD"},{"qty":250,"price":"$1.63940","currency":"USD"},{"qty":500,"price":"$1.43448","currency":"USD"},{"qty":1000,"price":"$1.35328","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5d1f86b98937b9a0551c7b690bdb36d2.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/L4940V85/alternatives.json"},"ai":{"faq":[{"question":"How can I order the L4940V85 or check stock?","answer":"The L4940V85 is obsolete per STMicroelectronics. We source it through our independent supply network — submit an RFQ with your target quantity and we'll confirm availability and current pricing. No stock-holding claim; quoted to order against your BOM line."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/L4940V85","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/L4940V85 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}}