{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PS2561FL-1Y-K-A","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"PS2561FL-1Y-K-A","canonicalUrl":"https://icboms.com/renesas/PS2561FL-1Y-K-A","factsUrl":"https://icboms.com/api/mcp/products/PS2561FL-1Y-K-A","rawCanonicalId":null},"summary":{"shortDescription":"Renesas PS2561FL-1Y-K-A single-channel transistor-output optocoupler, DC input, 5000Vrms isolation, 300-600% CTR at 5mA, -55 to 110°C, 4-SMD gull wing package, Tube.","salesMarkdown":"## 5000Vrms isolation in a 4-SMD gull wing — what that buys you The Renesas PS2561FL-1Y-K-A is a single-channel, DC-input transistor-output optocoupler rated for 5000Vrms isolation between primary and secondary sides. That isolation voltage puts it in the reinforced-insulation tier for industrial drives, motor controls, and AC mains monitoring — enough margin for a 400V bus with double the safety standard. The 4-SMD gull-wing package keeps the creepage path long enough to sustain that rating across the board's lifetime, and the surface-mount footprint suits automated assembly lines without a through-hole step. CTR is spec'd at 300% minimum, 600% maximum at a forward current of 5mA. That's a wide but well-defined gain window: at 5mA input, the output transistor can sink anywhere from 15mA to 30mA into a pull-up or logic gate. Design the input resistor for 5mA forward current, and you get a guaranteed logic-level swing at the output without overdriving the LED. The 50mA absolute maximum per channel covers direct drive to a small relay or a low-side switch. ## Temperature range and switching speed Operating temperature spans -55°C to 110°C, so this part is at home in outdoor telecom cabinets, under-hood automotive electronics, and factory-floor PLCs that see thermal cycling. The rise and fall times are 5µs and 7µs typical — fast enough for 10 kHz PWM isolation or serial data at 115.2 kbps, but not for high-speed comms like CAN or SPI. For those, you'd step up to a digital isolator or a high-speed optocoupler.","metaTitle":"PS2561FL-1Y-K-A Optocoupler, 5000Vrms, 300-600% CTR, 4-SMD","metaDescription":"PS2561FL-1Y-K-A single-channel transistor output optocoupler with 5000Vrms isolation, 300-600% CTR at 5mA, -55 to 110°C. Active, ROHS3.","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","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":"$1.04","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.71000","currency":"USD"},{"qty":10,"price":"$0.46100","currency":"USD"},{"qty":100,"price":"$0.30210","currency":"USD"},{"qty":1000,"price":"$0.25050","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/cba22bc218bf0e1356b1256274a70f70.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is PS2561FL-1Y-K-A obsolete or nearing end-of-life?","answer":"No. The lifecycle status is Active with no NRND or LTB notice. It is safe for new designs and production planning."},{"question":"What is the current transfer ratio (CTR) of PS2561FL-1Y-K-A?","answer":"At 5mA input, the output can sink 15-30mA into a load."},{"question":"Is PS2561FL-1Y-K-A RoHS compliant?","answer":"Yes, it is ROHS3 compliant, covering all six original RoHS substances plus four phthalates."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/PS2561FL-1Y-K-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-K-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}}