{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FOD2741CTV","brand":"onsemi","brandSlug":"onsemi","productSlug":"FOD2741CTV","canonicalUrl":"https://icboms.com/onsemi/FOD2741CTV","factsUrl":"https://icboms.com/api/mcp/products/FOD2741CTV","rawCanonicalId":null},"summary":{"shortDescription":"onsemi FOD2741CTV single-channel transistor output optoisolator, 5000Vrms isolation, 100-200% CTR at 10mA, 30V/50mA output, 8-DIP through-hole, tube.","salesMarkdown":"## 5000Vrms isolation — the safety barrier spec The headline rating is 5000Vrms isolation between input and output — this qualifies the FOD2741CTV for reinforced insulation in mains-connected equipment where the optocoupler must withstand a 5 kV dielectric withstand test per IEC 60950-1 or IEC 62368-1. The single-channel 8-DIP package provides one isolated path per device; a multi-channel design would need multiple units or a different part. ## CTR range and drive current — what the 100-200% means for the BOM This means with 10mA through the LED, the output transistor can sink at least 10mA and at most 20mA at the collector. For a design that needs guaranteed saturation into a 5V logic input, the 400mV Vce(sat) maximum ensures the output pulls below the logic low threshold — but only if the LED drive current is set within the CTR window. A 10mA LED current with a 1.5V forward drop burns 15mW on the input side; the 50mA output channel rating gives headroom for driving a relay coil or a PLC input module. ## Through-hole 8-DIP — board-fit and replacement reality The 8-DIP package with 0.400-inch (10.16mm) body width is a standard through-hole footprint that has been in production for decades. The 8-MDIP supplier device package variant shares the same pinout and dimensions. For a rework lab or repair depot replacing this on an existing board, the through-hole format means hand-soldering is straightforward — no hot-air profile or reflow oven needed. The tube packaging is the standard shipping format for through-hole DIPs; each tube typically holds 50 units, though the exact count varies by lot. ## Industrial temperature range and deployment context The DC input type means the LED is driven by a DC signal — no AC coupling or rectification needed on the input side. The transistor output type is the classic phototransistor configuration: it switches in microseconds, suitable for 10-100 kHz signal isolation but not for high-speed data links.","metaTitle":"onsemi FOD2741CTV Optoisolator, 5000Vrms, 8-DIP, Obsolete","metaDescription":"onsemi FOD2741CTV single-channel transistor output optoisolator, 5000Vrms isolation, 100-200% CTR at 10mA, 8-DIP through-hole.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Optoisolators"],"specifications":{"Mfr":"onsemi","Series":"-","Package":"Tube","Input Type":"DC","Output Type":"Transistor","Mounting Type":"Through Hole","Package / Case":"8-DIP (0.400\\\", 10.16mm)","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Number of Channels":"1","Base Product Number":"FOD274","Voltage - Isolation":"5000Vrms","Vce Saturation (Max)":"400mV","Operating Temperature":"-40°C ~ 85°C","Rise / Fall Time (Typ)":"-","Voltage - Output (Max)":"30V","Supplier Device Package":"8-MDIP","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"200% @ 10mA","Current Transfer Ratio (Min)":"100% @ 10mA","Voltage - Forward (Vf) (Typ)":"1.5V (Max)","Turn On / Turn Off Time (Typ)":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.7900","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/68430cecde9bc72afdbde32963ab63a1.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/FOD2741CTV","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/FOD2741CTV when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T06:32:30.327Z","lastPublished":"2026-07-21T06:32:30.327Z","indexable":true}}