{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UA78M08CKVURG3","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UA78M08CKVURG3","canonicalUrl":"https://icboms.com/texas-instruments/UA78M08CKVURG3","factsUrl":"https://icboms.com/api/mcp/products/UA78M08CKVURG3","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UA78M08CKVURG3 fixed-output linear regulator, 8V, 500mA, TO-252-3 (DPak) surface-mount package, PSRR 80dB at 120Hz.","salesMarkdown":"## Fixed 8V rail in a DPak The UA78M08CKVURG3 is a fixed 8V output linear regulator from Texas Instruments, delivering up to 500 mA in a TO-252-3 (DPak) surface-mount package. It's a single-positive-output LDO with overcurrent, overtemperature, and short-circuit protection built in. ## PSRR at 120 Hz — what it means on a clean DC rail The 80 dB PSRR at 120 Hz tells you this regulator attenuates full-wave-rectified ripple (100/120 Hz from a 50/60 Hz mains transformer) by a factor of 10,000. If your unregulated input has 1 Vpp of 120 Hz ripple, the output sees about 100 µVpp — clean enough for most analog front-ends running off an 8 V rail. ## Dropout and input range Maximum dropout is 2 V at 350 mA load — keep the input at least 2 V above the 8 V output to stay in regulation. Input can go up to 25 V absolute max, so it tolerates a 12 V or 15 V unregulated bus without an extra pre-regulator. ## Thermal and package fit The TO-252-3 (DPak) has an exposed tab on the bottom — that tab is the output (Vout) and the main heat path. Solder it to a copper pour on the PCB; the tab's thermal resistance to ambient drops with the copper area. Operating range is 0°C to 125°C junction, so it's a commercial-temp device — fine for indoor gear, not for under-hood or freezer environments.","metaTitle":"UA78M08CKVURG3 8V 500mA Linear Regulator, TO-252-3","metaDescription":"Texas Instruments UA78M08CKVURG3 fixed 8V output LDO, 500mA, PSRR 80dB at 120Hz. Active, ROHS3 compliant. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PSRR":"80dB (120Hz)","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-252-3, DPak (2 Leads + Tab), SC-63","lifecycle_stage":"eol_hot","Current - Output":"500mA","Protection Features":"Over Current, Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"0°C ~ 125°C","Voltage - Input (Max)":"25V","Voltage Dropout (Max)":"2V @ 350mA","Supplier Device Package":"TO-252-3","Voltage - Output (Min/Fixed)":"8V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.81","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.81000","currency":"USD"},{"qty":10,"price":"$0.71500","currency":"USD"},{"qty":25,"price":"$0.67120","currency":"USD"},{"qty":100,"price":"$0.54790","currency":"USD"},{"qty":250,"price":"$0.50888","currency":"USD"},{"qty":500,"price":"$0.43310","currency":"USD"},{"qty":1000,"price":"$0.34648","currency":"USD"},{"qty":2500,"price":"$0.31399","currency":"USD"},{"qty":5000,"price":"$0.30644","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b105c644f302e343adf65ffd8e701eb0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of UA78M08CKVURG3?","answer":"80 dB at 120 Hz. That means it knocks down full-wave rectifier ripple by 10,000:1 — a 1 Vpp ripple on the input becomes about 100 µVpp on the 8 V output."},{"question":"What package does UA78M08CKVURG3 come in?","answer":"TO-252-3 (DPak, SC-63) surface-mount. The exposed tab is the output and the primary heat path."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UA78M08CKVURG3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UA78M08CKVURG3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}