{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PS2561FL-1Y-A","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"PS2561FL-1Y-A","canonicalUrl":"https://icboms.com/renesas/PS2561FL-1Y-A","factsUrl":"https://icboms.com/api/mcp/products/PS2561FL-1Y-A","rawCanonicalId":null},"summary":{"shortDescription":"Renesas PS2561FL-1Y-A, 1-channel DC-input optocoupler with transistor output, 5000Vrms isolation, 300% to 600% CTR at 5mA, 50mA output current, 80V output rating, 4-SMD gull-wing package, -55°C to 110°C, ROHS3.","salesMarkdown":"## 5000Vrms isolation — what it buys you in system safety The Renesas PS2561FL-1Y-A is a single-channel, DC-input phototransistor optocoupler rated for 5000Vrms isolation between input and output. That isolation voltage is the primary spec that drives its use in industrial power supplies, motor drives, and medical equipment where galvanic separation is a safety or noise-mitigation requirement. The transistor output with base access gives you flexibility to tailor switching thresholds with an external resistor, or to disable the output during power-up sequencing. ## CTR margin — planning for LED aging and temperature drift Current transfer ratio is specified at 300% minimum to 600% maximum at a forward current of 5mA. That wide CTR band means the part can tolerate LED degradation over life and temperature excursions without dropping below the logic threshold at the receiver. For a design targeting a 10-year service life in an outdoor enclosure, the 300% floor at 5mA gives you headroom to derate the LED drive current and still maintain a clean logic high at the output. The typical forward voltage of 1.2V at 5mA is standard for IR LEDs in this class. ## Temperature range and output drive — deployment context Operating temperature from -55°C to 110°C covers cold-start in telecom cabinets and hot-side sensing in engine-bay electronics. Vce saturation is 300mV maximum at rated current, so the voltage drop across the opto won't steal headroom from the downstream load. ## Package and assembly Supplied in a 4-SMD gull-wing package (4-SMD case code) for surface-mount assembly. Gull-wing leads are inspectable and reworkable with standard hot-air tools. The package is compatible with reflow profiles typical for MSL-rated components; verify floor-life handling per the manufacturer's moisture sensitivity level. The tube shipping format is common for this package size and protects leads during handling.","metaTitle":"PS2561FL-1Y-A Optocoupler, 5000Vrms, 300-600% CTR, SMD","metaDescription":"PS2561FL-1Y-A optocoupler from Renesas: 1-channel DC input, transistor output, 5000Vrms isolation, 300-600% CTR @5mA, -55°C to 110°C, 4-SMD gull wing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Tube","Input Type":"DC","Output Type":"Transistor with Base","Mounting Type":"Surface Mount","Package / Case":"4-SMD, Gull Wing","lifecycle_stage":"eol_hot","Number of Channels":"1","Voltage - Isolation":"5000Vrms","Vce Saturation (Max)":"300mV","Operating Temperature":"-55°C ~ 110°C","Rise / Fall Time (Typ)":"5µs, 7µs","Voltage - Output (Max)":"80V","Supplier Device Package":"4-SMD","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"600% @ 5mA","Current Transfer Ratio (Min)":"300% @ 5mA","Voltage - Forward (Vf) (Typ)":"1.2V","Current - DC Forward (If) (Max)":"30 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.08","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.08000","currency":"USD"},{"qty":10,"price":"$0.70300","currency":"USD"},{"qty":100,"price":"$0.46060","currency":"USD"},{"qty":1000,"price":"$0.36360","currency":"USD"},{"qty":2000,"price":"$0.33936","currency":"USD"},{"qty":5000,"price":"$0.32724","currency":"USD"},{"qty":10000,"price":"$0.32239","currency":"USD"},{"qty":25000,"price":"$0.31512","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/cba22bc218bf0e1356b1256274a70f70.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the current transfer ratio of PS2561FL-1Y-A?","answer":"CTR is specified at 300% minimum and 600% maximum, measured at a forward current of 5mA. This wide range accommodates LED degradation over life and temperature variation."},{"question":"Is PS2561FL-1Y-A RoHS compliant?","answer":"Yes, it is ROHS3 compliant, covering all RoHS substances including lead in solder."},{"question":"What is the closest functional alternative to PS2561FL-1Y-A?","answer":"The PS2801C-4-V-A is a 4-channel variant with the same transistor output, 300mV Vce saturation, and 5µs/7µs rise/fall times, but its isolation is 2500Vrms and operating temperature tops at 100°C. For a single-channel, 5000Vrms design, the PS2561FL-1Y-A is the correct fit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/PS2561FL-1Y-A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/PS2561FL-1Y-A when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}