{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CNY171W","brand":"onsemi","brandSlug":"onsemi","productSlug":"CNY171W","canonicalUrl":"https://icboms.com/onsemi/CNY171W","factsUrl":"https://icboms.com/api/mcp/products/CNY171W","rawCanonicalId":null},"summary":{"shortDescription":"onsemi CNY171W single-channel optoisolator, DC input, transistor with base output, 5300Vrms isolation, 6-DIP through-hole package, tube.","salesMarkdown":"## Device identity and isolation rating The CNY171W: It provides 5300 Vrms galvanic isolation between the DC input LED and the phototransistor output — this is the reinforced isolation class needed for safety barriers in medical, industrial, and power-supply feedback paths where the primary-secondary separation must hold off transient overvoltages. ## Output performance and temperature envelope The output transistor with base access is rated for 70 V collector-emitter and 50 mA continuous current. Current transfer ratio (CTR) is specified at 40% minimum to 80% maximum at If=10 mA — this band is typical for general-purpose logic-level coupling; the 300 mV max Vce(sat) at the rated forward current keeps the output drop low enough to drive TTL or CMOS inputs without a pull-up resistor. Switching is moderate: 1 µs rise, 2 µs fall typ, with turn-on/turn-off times of 2 µs and 3 µs respectively. The 100 mA absolute-maximum forward current on the input LED gives headroom for pulsed drive schemes in noisy backplanes.","metaTitle":"onsemi CNY171W Optoisolator, 5300Vrms, 6-DIP, Obsolete","metaDescription":"onsemi CNY171W optoisolator, 5300Vrms isolation, 40-80% CTR at 10mA, 70V output, -55 to 100°C. 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":"CNY171","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-DIP","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"80% @ 10mA","Current Transfer Ratio (Min)":"40% @ 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/CNY171W/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the CNY171W?","answer":"No official cross-reference or pin-compatible replacement is provided by onsemi for this obsolete part. The functional replacement would need to match the 6-DIP footprint, 5300 Vrms isolation, and 40-80% CTR band at 10 mA — a parametric search across the CNY17 family or similar optoisolators is the practical route."},{"question":"What compliance documentation does onsemi provide for the CNY171W?","answer":"The evidence does not list specific compliance certifications (RoHS, REACH, UL, IEC) for this part. As an obsolete product, the original onsemi datasheet and the date-code-specific manufacturing records are the authoritative sources for compliance status."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/CNY171W","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/CNY171W when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T06:25:39.474Z","lastPublished":"2026-07-21T06:25:39.474Z","indexable":true}}