{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2940T-10.0","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2940T-10.0","canonicalUrl":"https://icboms.com/texas-instruments/LM2940T-10.0","factsUrl":"https://icboms.com/api/mcp/products/LM2940T-10.0","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2940T-10.0, 10V fixed-output LDO regulator, 1A output, 1V dropout at 1A, PSRR 63dB at 120Hz, -40°C to 125°C, TO-220-3 through-hole package, NRND lifecycle.","salesMarkdown":"It delivers 1 A continuous output with a maximum dropout of 1 V at full load, meaning the input rail must stay above 11 V to maintain regulation. ## PSRR and ripple rejection — why 63 dB at 120 Hz matters The PSRR is 63 dB at 120 Hz, which is the fundamental ripple frequency from a full-wave rectified AC line. This rating tells you the regulator attenuates 120 Hz ripple by a factor of roughly 1400, making it a good fit for post-rectifier linear regulation in audio preamps, analog sensor supplies, or any rail that needs clean DC from a raw rectified source. Built-in protection covers over-current, over-temperature, reverse polarity, and short-circuit conditions. This means TI is not actively supporting new design-ins, though the part may still be available through distribution and independent channels for existing production runs. For new designs, TI's official recommendation is to evaluate a current-production alternative within the LM2940 family or a different TI LDO series.","metaTitle":"Texas Instruments LM2940T-10.0 LDO Regulator, 10V Fixed, 1A","metaDescription":"Texas Instruments LM2940T-10.0 is a 10V fixed-output LDO regulator rated for 1A in a TO-220-3 package. PSRR 63dB at 120Hz.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","PSRR":"63dB (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)":"10V"}},"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-10.0/alternatives.json"},"ai":{"faq":[{"question":"Is the LM2940T-10.0 obsolete or still available for purchase?","answer":"It is not formally discontinued, but TI advises against using it in new designs. It remains available through independent distribution channels for existing production and repair needs."},{"question":"What can replace the LM2940T-10.0 for new designs?","answer":"Texas Instruments does not list an official direct successor for the LM2940T-10.0. For new designs, evaluate current-production fixed-output LDOs from TI's portfolio that match the 10 V output, 1 A capability, and TO-220 package. The LM2940 family includes other voltage options that may be pin-compatible, but no drop-in replacement is specified."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2940T-10.0","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-10.0 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}}