{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CNY172","brand":"onsemi","brandSlug":"onsemi","productSlug":"CNY172","canonicalUrl":"https://icboms.com/onsemi/CNY172","factsUrl":"https://icboms.com/api/mcp/products/CNY172","rawCanonicalId":null},"summary":{"shortDescription":"onsemi CNY172 optoisolator, single-channel DC-input transistor with base output, 5300Vrms isolation, 63-125% CTR at 10mA, 6-SMD gull wing package, tube.","salesMarkdown":"The onsemi CNY172 is a single-channel optoisolator with a DC-input LED and a phototransistor output that brings the base terminal out — useful for biasing or Miller-effect compensation in high-speed switching circuits. Rated for 5300 Vrms isolation, it suits applications where galvanic separation between control and load sides must withstand mains transients or medical-grade creepage requirements. Current transfer ratio spans 63% to 125% at a forward current of 10 mA, giving the designer a predictable gain window for logic-level translation or isolated feedback loops. Supplied in a 6-SMD gull-wing package (6-SMD), the CNY172 mounts on the surface of a PCB with a standard reflow profile — the gull-wing leads provide visual solder-joint inspection access. The tube packaging (Tube) means the parts are delivered in anti-static tubes; for pick-and-place, a tube feeder or manual loading is needed — no tape-and-reel option is listed. ## Temperature grade and environment Rated for an operating junction temperature range of -55°C to 100°C, the CNY172 covers industrial and some military/aerospace ambient conditions — the lower bound suits cold-start scenarios in outdoor or airborne equipment. The 5300 Vrms isolation rating is tested per the optoisolator standard; the part does not carry an explicit UL or IEC certification in the available record, so end-equipment safety certification should verify the isolation coordination at the system level.","metaTitle":"onsemi CNY172 Optoisolator, 5300Vrms, 6-SMD, Obsolete","metaDescription":"onsemi CNY172 optoisolator, 5300Vrms isolation, 63-125% CTR at 10mA, -55 to 100°C. Obsolete — sourced to order against RFQ through 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":"Surface Mount","Package / Case":"6-SMD, Gull Wing","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Number of Channels":"1","Base Product Number":"CNY172","Voltage - Isolation":"5300Vrms","Vce Saturation (Max)":"300mV","Operating Temperature":"-55°C~100°C","Rise / Fall Time (Typ)":"1µs, 2µs","Voltage - Output (Max)":"70V","Supplier Device Package":"6-SMD","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"125% @ 10mA","Current Transfer Ratio (Min)":"63% @ 10mA","Voltage - Forward (Vf) (Typ)":"1.35V","Turn On / Turn Off Time (Typ)":"2µs, 3µs","Current - DC Forward (If) (Max)":"100 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4a47ea3b51cbb13a83c8d83e21910005.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CNY172/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the CNY172 and how do I get a price?","answer":"The CNY172 is sourced through independent distribution channels."},{"question":"What is the closest pin-compatible alternative to the CNY172?","answer":"No official successor or pin-compatible cross-reference is recorded from onsemi. A parametric search for a 6-SMD optoisolator with 5300 Vrms isolation and a 63-125% CTR at 10 mA is the recommended starting point for a replacement evaluation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/CNY172","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/CNY172 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T06:25:39.544Z","lastPublished":"2026-07-21T06:25:39.544Z","indexable":true}}