{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"L78L15CD-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"L78L15CD-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/L78L15CD-TR","factsUrl":"https://icboms.com/api/mcp/products/L78L15CD-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics L78L15CD-TR fixed-output LDO regulator, 15 V, 100 mA, 35 V max input, PSRR 39 dB at 120 Hz, 8-SOIC surface-mount package, tape and reel.","salesMarkdown":"## Active 15 V fixed-output LDO for 100 mA rails The STMicroelectronics L78L15CD-TR is a single-output, fixed 15 V positive linear regulator delivering up to 100 mA continuous current. This is an active-production part with ROHS3 compliance, suitable for new designs or BOM refill on existing boards. The L78L15CD-TR provides 39 dB of power-supply rejection at 120 Hz. This is the attenuation of ripple from a full-wave rectified mains supply — a 1 V peak-to-peak 120 Hz ripple on the input becomes roughly 11 mV on the output. For analog circuits powered from a lightly filtered DC bus, this level of rejection keeps hum out of the signal chain. Quiescent current is 5.5 mA typical and maximum supply current is 6 mA. The 100 mA output covers local regulation for small analog loads — op-amp rails, sensor supplies, or reference buffers — without the thermal overhead of a larger regulator. Protection features include over-current, over-temperature, and short-circuit shutdown. The operating temperature range is 0°C to 125°C, which covers commercial and most industrial ambient conditions, though not extended cold environments. The 8-SOIC footprint is a standard surface-mount package with 1.27 mm pin pitch. The tape-and-reel option supports automated pick-and-place assembly. No exposed thermal pad — power dissipation is through the package leads and copper area on the PCB.","metaTitle":"STMicroelectronics L78L15CD-TR 15V 100mA LDO, 8-SOIC","metaDescription":"STMicroelectronics L78L15CD-TR fixed 15V output LDO, 100mA, 35V max input, PSRR 39dB at 120Hz, 8-SOIC. Active production, ROHS3 compliant. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Interface & Transceivers"],"specifications":{"PSRR":"39dB (120Hz)","Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Current - Output":"100mA","Protection Features":"Over Current, Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"0°C ~ 125°C","Voltage - Input (Max)":"35V","Current - Supply (Max)":"6 mA","Supplier Device Package":"8-SOIC","Current - Quiescent (Iq)":"5.5 mA","Voltage - Output (Min/Fixed)":"15V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.44","stockQuantity":16,"priceTiers":[{"qty":1,"price":"$0.46000","currency":"USD"},{"qty":10,"price":"$0.39200","currency":"USD"},{"qty":25,"price":"$0.36560","currency":"USD"},{"qty":100,"price":"$0.29230","currency":"USD"},{"qty":250,"price":"$0.27148","currency":"USD"},{"qty":500,"price":"$0.22970","currency":"USD"},{"qty":1000,"price":"$0.17750","currency":"USD"},{"qty":2500,"price":"$0.17238","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/49a5b1e05533ceae40201a09eef4c29f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of L78L15CD-TR?","answer":"The L78L15CD-TR has a power-supply rejection ratio of 39 dB at 120 Hz. This is the attenuation of mains ripple — a 1 V peak-to-peak 120 Hz input ripple appears as about 11 mV on the output."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/L78L15CD-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/L78L15CD-TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}