{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2940T-12.0","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2940T-12.0","canonicalUrl":"https://icboms.com/texas-instruments/LM2940T-12.0","factsUrl":"https://icboms.com/api/mcp/products/LM2940T-12.0","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2940T-12.0, fixed 12V output LDO regulator, 1A, 1V dropout max, 66 dB PSRR at 120 Hz, TO-220-3, -40°C to 125°C.","salesMarkdown":"The LM2940T-12.0: The 1 V maximum dropout at full load means the input rail must stay above 13 V to maintain regulation — a 13.8 V nominal supply (common in automotive and industrial systems) leaves 0.8 V of headroom, which is tight but workable if the input is well-filtered. The 66 dB PSRR at 120 Hz attenuates ripple from a full-wave rectified mains supply. ## Protection suite and temperature range Built-in protection covers over-current, over-temperature, reverse polarity, and short-circuit — the reverse polarity clamp is especially useful in battery-powered or vehicle applications where the input can be accidentally reversed.","metaTitle":"LM2940T-12.0 12V 1A LDO Regulator, TO-220, NRND","metaDescription":"LM2940T-12.0 fixed 12V output, 1A LDO regulator in TO-220-3. 66 dB PSRR at 120 Hz, 1V dropout max at 1A, -40°C to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","PSRR":"66dB (120Hz)","Series":"-","Package":"Tube","Output Type":"Fixed","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Not For New Designs","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"1A","Base Product Number":"LM2940","Protection Features":"Over Current, Over Temperature, Reverse Polarity, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C~125°C","Voltage - Input (Max)":"26V","Voltage Dropout (Max)":"1V @ 1A","Current - Supply (Max)":"15 mA","Voltage - Output (Max)":"-","Supplier Device Package":"TO-220-3","Current - Quiescent (Iq)":"10 mA","Voltage - Output (Min/Fixed)":"12V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.7000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1c4256f4019947c4206f2126daf8930.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2940T-12.0/alternatives.json"},"ai":{"faq":[{"question":"Is LM2940T-12.0 obsolete or NRND?","answer":"Existing BOM lines can still be filled, but new designs should look for an alternative."},{"question":"What is the replacement for LM2940T-12.0?","answer":"For a pin-compatible substitute, look at other TO-220-3 fixed 12 V LDOs in the same current class — confirm the dropout voltage and PSRR match your design margin before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2940T-12.0","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM2940T-12.0 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}}