{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4N253SD","brand":"onsemi","brandSlug":"onsemi","productSlug":"4N253SD","canonicalUrl":"https://icboms.com/onsemi/4N253SD","factsUrl":"https://icboms.com/api/mcp/products/4N253SD","rawCanonicalId":null},"summary":{"shortDescription":"onsemi 4N253SD single-channel optoisolator, 5300Vrms isolation, DC input, transistor with base output, 6-SMD Gull Wing package, Tape & Reel.","salesMarkdown":"The 4N253SD is marked Obsolete by onsemi, meaning the manufacturer has ceased production. For existing BOM lines, this part is sourced through independent distribution — quantities are lot-specific and confirmed at RFQ. Availability and current pricing are verified at quote time. ## Isolation and signal transfer Rated for 5300Vrms isolation, this optoisolator provides galvanic separation between input and output circuits — suitable for safety barriers in industrial control or power supply feedback loops where high-voltage isolation is required. Minimum current transfer ratio is 20% at 10 mA forward current, with typical turn-on/turn-off times of 2 µs each. The 30V maximum output voltage and 500mV Vce saturation cover standard logic-level switching. ## Temperature range and package Operating temperature spans -55°C to 100°C, covering industrial and some military-grade environments. The 6-SMD Gull Wing package (supplier device package 6-SMD) is suited for surface-mount assembly with standard reflow profiles. Input type is DC, with a typical forward voltage of 1.18V and maximum DC forward current of 100 mA. The transistor-with-base output allows external base drive for custom gain or switching thresholds.","metaTitle":"onsemi 4N253SD Optoisolator, 5300Vrms, 6-SMD Gull Wing","metaDescription":"onsemi 4N253SD single-channel optoisolator, 5300Vrms isolation, 20% CTR min, -55 to 100°C. Obsolete — sourced to order against RFQ via independent distribution.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Optoisolators"],"specifications":{"Mfr":"onsemi","Series":"-","Package":"Tape & Reel (TR)","Input Type":"DC","Output Type":"Transistor with Base","Mounting Type":"Surface Mount","Package / Case":"6-SMD, Gull Wing","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Number of Channels":"1","Base Product Number":"4N25","Voltage - Isolation":"5300Vrms","Vce Saturation (Max)":"500mV","Operating Temperature":"-55°C~100°C","Rise / Fall Time (Typ)":"-","Voltage - Output (Max)":"30V","Supplier Device Package":"6-SMD","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)":"100 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/549fd3247d695b0763fc033a8221c221.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/4N253SD/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 4N253SD?","answer":"Submit an RFQ through this listing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/4N253SD","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/4N253SD when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T06:19:39.339Z","lastPublished":"2026-07-21T06:19:39.339Z","indexable":true}}