{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FOD2742BR2V","brand":"onsemi","brandSlug":"onsemi","productSlug":"FOD2742BR2V","canonicalUrl":"https://icboms.com/onsemi/FOD2742BR2V","factsUrl":"https://icboms.com/api/mcp/products/FOD2742BR2V","rawCanonicalId":null},"summary":{"shortDescription":"onsemi FOD2742BR2V, single-channel optoisolator, DC input, transistor output, 2500Vrms isolation, 100-200% CTR at 10 mA, 8-SOIC surface-mount package, Tape & Reel or Cut Tape.","salesMarkdown":"## Active optoisolator for isolated feedback and signal transfer The onsemi FOD2742BR2V is a single-channel optoisolator in an 8-SOIC surface-mount package, rated for 2500Vrms isolation between input and output. It accepts a DC input and drives a transistor output, making it a straightforward choice for isolated feedback loops in switch-mode power supplies, PLC digital input modules, and general-purpose signal isolation where you need a clean galvanic barrier without a lot of external circuitry. ## CTR range sets the LED drive budget The current transfer ratio is specified at 100% minimum and 200% maximum, both measured at a forward current of 10 mA. That 2:1 spread means the design must tolerate the full CTR range without saturating the output transistor or dropping out at the low end. The output transistor can sink up to 50 mA continuously and saturates at 400 mV max, which is tight but workable for driving a downstream logic input or an optocoupler-load resistor. ## Active production, surface-mount reel ready This part carries an Active product status and is ROHS3 compliant. It ships in Tape & Reel or Cut Tape formats, which suits both prototype builds and production reflow. The 8-SOIC footprint is a standard 3.90 mm body width — no exotic land pattern needed. Sourced per RFQ against your BOM quantity; no stock-holding claim, but the active status means supply continuity is not a concern.","metaTitle":"FOD2742BR2V onsemi Optoisolator – 2500Vrms","metaDescription":"onsemi FOD2742BR2V optoisolator: 2500Vrms isolation, DC input, transistor output, 100-200% CTR at 10 mA, 8-SOIC surface mount.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Input Type":"DC","Output Type":"Transistor","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Number of Channels":"1","Voltage - Isolation":"2500Vrms","Vce Saturation (Max)":"400mV","Operating Temperature":"-25°C ~ 85°C","Voltage - Output (Max)":"70V","Supplier Device Package":"8-SOIC","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"200% @ 10mA","Current Transfer Ratio (Min)":"100% @ 10mA","Voltage - Forward (Vf) (Typ)":"1.2V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.87","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.87000","currency":"USD"},{"qty":10,"price":"$1.18300","currency":"USD"},{"qty":100,"price":"$0.87560","currency":"USD"},{"qty":500,"price":"$0.80458","currency":"USD"},{"qty":1000,"price":"$0.66260","currency":"USD"},{"qty":2500,"price":"$0.62947","currency":"USD"},{"qty":5000,"price":"$0.61527","currency":"USD"},{"qty":12500,"price":"$0.60107","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/0e74726e95124fe5cf9530124b9bbb0a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the CTR of FOD2742BR2V?","answer":"The current transfer ratio is 100% minimum and 200% maximum, both specified at a forward current of 10 mA."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/FOD2742BR2V","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/FOD2742BR2V when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:11:03.941Z","lastPublished":"2026-07-17T20:11:03.941Z","indexable":true}}