{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UA7812CKCE3","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UA7812CKCE3","canonicalUrl":"https://icboms.com/texas-instruments/UA7812CKCE3","factsUrl":"https://icboms.com/api/mcp/products/UA7812CKCE3","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UA7812CKCE3 fixed positive linear voltage regulator, 12 V output, 1.5 A, TO-220-3 through-hole, 61 dB PSRR at 120 Hz, active production.","salesMarkdown":"## 12 V fixed rail, 1.5 A continuous — the headroom and dropout decision The UA7812CKCE3 is a fixed 12 V positive-output linear regulator delivering up to 1.5 A. Ripple rejection is 61 dB at 120 Hz, which attenuates full-wave rectifier ripple by a factor of roughly 1100 — a 1 Vpp ripple on the input appears as under 1 mVpp on the output, making this part suitable for powering analog front-ends or reference circuits from a line-frequency supply. ## Protection suite and thermal envelope Built-in protection covers over-current, over-temperature, reverse polarity, and short-circuit conditions — the regulator survives a sustained output short without damage, and the thermal shutdown prevents junction runaway above 125°C. Operating junction temperature range is 0°C to 125°C, which covers commercial and most industrial ambient environments. The TO-220-3 package allows direct mounting to a heatsink via the metal tab — the tab is electrically common with the output pin, so an insulating pad and washer are needed if the heatsink is grounded.","metaTitle":"UA7812CKCE3 12V 1.5A Fixed Positive LDO, TO-220-3","metaDescription":"UA7812CKCE3 12V fixed-output linear regulator, 1.5A, 2V dropout at 1A, 61dB PSRR at 120Hz. Active, ROHS3. Sourced to order — request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"61dB (120Hz)","Package":"Tube","Output Type":"Fixed","Mounting Type":"Through Hole","Package / Case":"TO-220-3","lifecycle_stage":"eol_hot","Current - Output":"1.5A","Protection Features":"Over Current, Over Temperature, Reverse Polarity, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"0°C ~ 125°C (TJ)","Voltage - Input (Max)":"30V","Voltage Dropout (Max)":"2V @ 1A","Supplier Device Package":"TO-220-3","Current - Quiescent (Iq)":"8 mA","Voltage - Output (Min/Fixed)":"12V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.52","stockQuantity":0,"priceTiers":[{"qty":577,"price":"$0.52000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/04ebd451bf557fc6e14e96ace28218bc.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is UA7812CKCE3's PSRR rating?","answer":"The PSRR is 61 dB at 120 Hz, which provides strong ripple rejection for line-frequency power supplies."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UA7812CKCE3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UA7812CKCE3 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}}