{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4N25TM","brand":"onsemi","brandSlug":"onsemi","productSlug":"4N25TM","canonicalUrl":"https://icboms.com/onsemi/4N25TM","factsUrl":"https://icboms.com/api/mcp/products/4N25TM","rawCanonicalId":null},"summary":{"shortDescription":"onsemi 4N25TM Optoisolator, DC input, Transistor with Base output, 1 Channel, 6-DIP (0.400\", 10.16mm), Through Hole, 7500Vpk isolation, 20% CTR min at 10mA.","salesMarkdown":"## 7500Vpk isolation in a 6-DIP through-hole package The onsemi 4N25TM is a single-channel optoisolator in a 6-DIP (0.400\", 10.16mm) through-hole package, delivering 7500Vpk of galvanic isolation between a DC input LED and a transistor output with base access. Its 20% minimum current transfer ratio at 10 mA forward current ensures reliable DC-level coupling across the isolation barrier, while the 2 µs typical turn-on and turn-off times suit moderate-speed switching in industrial controls and power supply feedback loops. No pin-compatible drop-in replacement is guaranteed from the original manufacturer; a board-level requalification may be needed if migrating to a different optoisolator. ## Parametric fit for legacy DIP-based designs The 6-DIP (0.400\", 10.16mm) lead spacing matches the industry-standard footprint used in through-hole optoisolator sockets and PCB layouts — no adapter or board spin is required for existing DIP-6 patterns.","metaTitle":"onsemi 4N25TM Optoisolator, 7500Vpk, 6-DIP, Obsolete","metaDescription":"onsemi 4N25TM single-channel optoisolator, 7500Vpk isolation, 20% CTR min, 6-DIP through-hole. Obsolete — sourced to order via independent channels.","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 with Base","Mounting Type":"Through Hole","Package / Case":"6-DIP (0.400\\\", 10.16mm)","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Number of Channels":"1","Base Product Number":"4N25","Voltage - Isolation":"7500Vpk","Vce Saturation (Max)":"500mV","Operating Temperature":"-40°C ~ 100°C","Rise / Fall Time (Typ)":"-","Voltage - Output (Max)":"30V","Supplier Device Package":"6-DIP","Current - Output / Channel":"-","Current Transfer Ratio (Max)":"-","Current Transfer Ratio (Min)":"20% @ 10mA","Voltage - Forward (Vf) (Typ)":"1.18V","Turn On / Turn Off Time (Typ)":"2µs, 2µs","Current - DC Forward (If) (Max)":"60 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2060","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cdfaf651d7a1a3387e48131363a5f4f6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/4N25TM/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 4N25TM and how is it quoted?","answer":"The 4N25TM is available through independent distribution."},{"question":"What is the closest pin-compatible alternative to the 4N25TM?","answer":"No official pin-compatible successor is listed by onsemi. Functional equivalents from other manufacturers (e.g., Vishay, Broadcom) exist in the same 6-DIP footprint, but each has its own CTR and isolation ratings — verify the replacement against your application's minimum isolation voltage and CTR requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/4N25TM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/4N25TM when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T06:20:18.038Z","lastPublished":"2026-07-21T06:20:18.038Z","indexable":true}}