{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CNY1723S","brand":"onsemi","brandSlug":"onsemi","productSlug":"CNY1723S","canonicalUrl":"https://icboms.com/onsemi/CNY1723S","factsUrl":"https://icboms.com/api/mcp/products/CNY1723S","rawCanonicalId":null},"summary":{"shortDescription":"onsemi CNY1723S optoisolator, 1-channel, DC input, transistor with base output, 5300Vrms isolation, 63-125% CTR, 6-SMD gull-wing package, tube.","salesMarkdown":"## 5300Vrms isolation with 63–125% CTR — the safety barrier and drive margin The CNY1723S is a 1-channel optoisolator from onsemi with a transistor-with-base output, delivering 5300Vrms galvanic isolation between the DC input and the output side — a rating that meets reinforced insulation requirements for mains-connected equipment in industrial power supplies and motor drives. Its current transfer ratio spans 63% to 125% at a forward current of 10mA, meaning the output transistor saturates reliably across the full CTR window without overdriving the LED — a key parameter for maintaining the on-state voltage below 300mV (Vce(sat) max) over temperature and device lifetime. The output can sink up to 50mA continuous at a maximum collector-emitter voltage of 70V, and the switching speeds — 1µs rise, 2µs fall, 2µs turn-on, 3µs turn-off — support data rates up to roughly 100 kbps in typical logic-level isolation applications. ## Industrial temperature range and surface-mount package — deployment context Rated for -55°C to 100°C operating ambient, the CNY1723S suits outdoor telecom, industrial control cabinets, and under-hood automotive auxiliary circuits where the thermal swing exceeds commercial-grade limits. Housed in a 6-SMD gull-wing package (supplier device package 6-SMD), it mounts on standard surface-mount pads and is compatible with reflow soldering profiles typical for mixed-signal boards — the gull-wing leads provide visual solder-joint inspection access. onsemi has marked the CNY1723S as obsolete (product status: Obsolete).","metaTitle":"onsemi CNY1723S Optoisolator, 5300Vrms, 63-125% CTR, 6-SMD","metaDescription":"onsemi CNY1723S optoisolator, 5300Vrms isolation, 63-125% CTR at 10mA, 70V output, -55°C to 100°C. Obsolete — sourced to order against RFQ.","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/CNY1723S/alternatives.json"},"ai":{"faq":[{"question":"What is the current transfer ratio range for the CNY1723S?","answer":"63% to 125% at a forward current of 10mA. This CTR window guarantees the output transistor saturates with a Vce(sat) of 300mV max across the operating temperature range."},{"question":"How can I order the CNY1723S or check availability?","answer":"Submit an RFQ through this listing. No stock-holding claim — each order is verified for authenticity and traceability."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/CNY1723S","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/CNY1723S when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T06:25:54.806Z","lastPublished":"2026-07-21T06:25:54.806Z","indexable":true}}