{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4N283SD","brand":"onsemi","brandSlug":"onsemi","productSlug":"4N283SD","canonicalUrl":"https://icboms.com/onsemi/4N283SD","factsUrl":"https://icboms.com/api/mcp/products/4N283SD","rawCanonicalId":null},"summary":{"shortDescription":"onsemi 4N283SD Optoisolator, DC input, transistor with base output, 1 channel, 5300Vrms isolation, 6-SMD gull wing, Tape & Reel.","salesMarkdown":"onsemi has marked the 4N283SD as Obsolete. No pin-compatible drop-in replacement exists from onsemi — a board-level redesign would be needed for any alternative. The 4N283SD provides 5300Vrms galvanic isolation between input and output — this is the withstand voltage for one minute per the isolation spec, certifying the opto for safety-barrier applications in industrial and medical equipment where the primary and secondary circuits must be electrically separated. Minimum current transfer ratio (CTR) is 10% at a forward current of 10 mA. That means with 10 mA through the input LED, the output transistor can sink at least 1 mA — a low CTR floor that forces the designer to budget the output pull-up resistor and the downstream logic threshold around this minimum, not the typical value. Switching is rated at 2 µs turn-on and 2 µs turn-off typical — fast enough for 100 kHz data rates but not for high-speed serial isolation. The output transistor with base access allows the designer to add a base resistor for speed-up or noise immunity, a flexibility not available in Darlington or digital-output optos. ## Package and temperature grade for reflow assembly Housed in a 6-SMD gull-wing package with a supplier device package of 6-SMD, the 4N283SD is designed for surface-mount reflow soldering. The gull-wing leads provide visual solder-joint inspection and some compliance for board flex. Supplied in Tape & Reel for automated pick-and-place. Rated for an operating temperature range of -55°C to 100°C — industrial grade that covers most factory-floor and outdoor telecom enclosures. The 30 V maximum output voltage suits 24 V logic and PLC input rails with margin.","metaTitle":"onsemi 4N283SD Optoisolator, 5300Vrms, 6-SMD, Obsolete","metaDescription":"onsemi 4N283SD single-channel optoisolator, 5300Vrms isolation, 10% min CTR at 10mA, -55 to 100°C. Obsolete — sourced to order through 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":"4N28","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)":"10% @ 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/4N283SD/alternatives.json"},"ai":{"faq":[{"question":"How can I order 4N283SD or get a quote?","answer":"The 4N283SD is sourced to order through independent distribution. Submit an RFQ for current availability, lot date codes, and pricing — quantities are confirmed at quote time, not held available via RFQ confirmation on this listing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/4N283SD","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/4N283SD when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T06:21:20.776Z","lastPublished":"2026-07-21T06:21:20.776Z","indexable":true}}