{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"L78S05CV","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"L78S05CV","canonicalUrl":"https://icboms.com/stmicroelectronics/L78S05CV","factsUrl":"https://icboms.com/api/mcp/products/L78S05CV","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics L78S05CV, 5V fixed-output linear regulator, 2A, TO-220-3 through-hole package, PSRR 54dB (120Hz), active production.","salesMarkdown":"## 2 A linear regulator for 5 V rails The STMicroelectronics L78S05CV is a 5 V fixed-output positive linear regulator rated for 2 A continuous output current — the 'S' in the part number marks the 2 A variant of the standard 78xx family, stepping up from the 1 A L78xx parts without changing the TO-220-3 footprint. Maximum input voltage is 35 V, and the 2 A output makes it suitable for powering 5 V logic rails, sensor supplies, or relay coils in industrial control boards where a switching regulator's noise is undesirable. ## Ripple rejection and protection PSRR is 54 dB at 120 Hz — this is the line-frequency ripple rejection figure; a 54 dB rejection means the output ripple is roughly 0.2 % of the input ripple at 120 Hz, which keeps the 5 V rail clean for analog circuits like op-amp supplies or ADC reference buffers. Built-in protection covers over-current, over-temperature, and short-circuit conditions — the regulator folds back output current during a fault and recovers automatically when the fault clears, eliminating the need for external crowbar or foldback circuits on the board. Quiescent current is 8 mA typical — the ground pin current drawn by the regulator itself; at 2 A load this is negligible, but in always-on standby circuits the 8 mA Iq should be factored into the system power budget. ## Package and thermal design Operating junction temperature range is 0 °C to 150 °C — the 0 °C lower limit means this part is specified for commercial/industrial environments, not extended cold storage or outdoor winter operation below freezing. ## Lifecycle and compliance ROHS3 compliant — meets the current EU RoHS exemption regime (including exemptions for lead in high-melting-temperature solders), so no substance restrictions block its use in new product introductions or export to regulated markets.","metaTitle":"STMicroelectronics L78S05CV Linear Regulator, 5V 2A TO-220","metaDescription":"ST L78S05CV 5V fixed-output linear regulator, 2A, TO-220-3. Active production, ROHS3 compliant. PSRR 54dB at 120Hz. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PSRR":"54dB (120Hz)","Package":"Tube","Output Type":"Fixed","Mounting Type":"Through Hole","Package / Case":"TO-220-3","lifecycle_stage":"eol_hot","Current - Output":"2A","Protection Features":"Over Current, Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"0°C ~ 150°C","Voltage - Input (Max)":"35V","Supplier Device Package":"TO-220","Current - Quiescent (Iq)":"8 mA","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.13","priceTiers":[{"qty":1,"price":"$1.13000","currency":"USD"},{"qty":10,"price":"$1.00800","currency":"USD"},{"qty":25,"price":"$0.95640","currency":"USD"},{"qty":100,"price":"$0.78570","currency":"USD"},{"qty":250,"price":"$0.73448","currency":"USD"},{"qty":500,"price":"$0.64910","currency":"USD"},{"qty":1000,"price":"$0.56401","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b27e9bddbf2b2c05bedd4a784fce2de1.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/L78S05CV/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy L78S05CV and how do I get a price?","answer":"Submit an RFQ for the quantity you need."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/L78S05CV","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/L78S05CV 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}}