{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PS2561DL-1Y-A","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"PS2561DL-1Y-A","canonicalUrl":"https://icboms.com/renesas/PS2561DL-1Y-A","factsUrl":"https://icboms.com/api/mcp/products/PS2561DL-1Y-A","rawCanonicalId":null},"summary":{"shortDescription":"Renesas NEPOC PS2561DL-1Y-A single-channel transistor-output optocoupler, 5000Vrms isolation, 50-400% CTR @ 5mA, 80V output, 3µs/5µs rise/fall, -55°C to 110°C, 4-SMD gull wing surface-mount package.","salesMarkdown":"## Single-channel 5000Vrms optocoupler for industrial isolation The Renesas NEPOC PS2561DL-1Y-A is a single-channel transistor-output optocoupler in a 4-SMD gull-wing package. It provides 5000Vrms of isolation between input and output, with a current transfer ratio (CTR) ranging from 50% to 400% at a forward current of 5mA. Operating temperature spans -55°C to 110°C, suiting it for industrial power supplies, motor drives, PLC I/O modules, and other equipment where reinforced galvanic isolation is required between control and power domains. ## 5000Vrms isolation — what it buys you The 5000Vrms isolation rating is the part's strongest parameter. It qualifies the PS2561DL-1Y-A for reinforced insulation in mains-connected circuits — think off-line switch-mode supplies, three-phase inverter gate drives, and medical equipment where patient protection requires double or reinforced isolation. The 4-SMD gull-wing package with 8 mm creepage (typical for this footprint) supports the high-voltage barrier without external slots or standoffs. For designs that only need basic isolation at lower voltages, a 2500Vrms-rated part like the PS2801C-4-V-A would save board space and cost, but this part is the right call when the safety standard demands the higher rating. ## CTR spread and drive margin The CTR is specified as 50% minimum and 400% maximum at 5mA forward current. That 8:1 spread means the designer must verify the logic threshold at the low end of CTR, not the typical. At 5mA forward, a 50% CTR delivers 2.5mA into the output pull-up — enough to saturate a 10kΩ collector load to below 300mV Vce(sat). If the forward current is reduced to save power, the CTR drops further; the datasheet's CTR vs. If curve (not reproduced here) should be checked to ensure the minimum collector current still meets the load requirement. The 300mV max Vce(sat) at the specified test condition keeps the output clean for TTL or CMOS logic inputs. ## Switching speed and application fit With 3µs rise and 5µs fall times, this optocoupler handles 100 kHz PWM signals cleanly and supports serial data rates up to about 115 kbps. It is not suited for high-speed isolated communication like I²C (400 kHz) or CAN (1 Mbps) — those need a digital isolator or a faster optocoupler. For its intended role — isolated feedback in power supplies, relay drivers, status feedback from high-voltage domains — the switching speed is more than adequate. ## Lifecycle and compliance It is ROHS3 compliant, with no lead or restricted substances per the current directive. The NEPOC series is a mature, widely used optocoupler family from Renesas, so long-term supply is stable. No official second-source cross-reference is listed, but the PS2801C-4-V-A is a functional alternative if a multi-channel design with lower isolation (2500Vrms) is acceptable.","metaTitle":"PS2561DL-1Y-A NEPOC Optocoupler, 5000Vrms, 4-SMD Gull Wing","metaDescription":"PS2561DL-1Y-A single-channel transistor-output optocoupler from NEPOC series. 5000Vrms isolation, 50-400% CTR at 5mA, 80V output, -55 to 110°C.","metaKeywords":null},"attributes":{"series":"NEPOC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Series":"NEPOC","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)":"3µs, 5µs","Voltage - Output (Max)":"80V","Supplier Device Package":"4-SMD","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"400% @ 5mA","Current Transfer Ratio (Min)":"50% @ 5mA","Voltage - Forward (Vf) (Typ)":"1.2V","Current - DC Forward (If) (Max)":"40 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.85","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.90000","currency":"USD"},{"qty":10,"price":"$0.58400","currency":"USD"},{"qty":100,"price":"$0.38270","currency":"USD"},{"qty":1000,"price":"$0.31730","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/3e3a0a88fa6792e6a36afdbec1b11905.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is PS2561DL-1Y-A lead-free?","answer":"No additional lead-free certification is required for standard commercial or industrial use."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/PS2561DL-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/PS2561DL-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}}