{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CNY172W","brand":"onsemi","brandSlug":"onsemi","productSlug":"CNY172W","canonicalUrl":"https://icboms.com/onsemi/CNY172W","factsUrl":"https://icboms.com/api/mcp/products/CNY172W","rawCanonicalId":null},"summary":{"shortDescription":"onsemi CNY172W Optoisolator, DC input, Transistor with Base output, 1 Channel, 5300Vrms, 63-125% CTR, 6-DIP (0.400\", 10.16mm), Through Hole, Tube.","salesMarkdown":"## Lifecycle reality — EOL, not NRND onsemi classifies the CNY172W as Obsolete. This is not an NRND phase — the manufacturer has discontinued the part with no ongoing last-time-buy window. Any available stock is pre-EOL production, and sourcing goes through independent surplus channels where date-code provenance and lot traceability become the buyer's main diligence point. ## Isolation and signal-transfer parametrics Rated for 5300Vrms isolation, the CNY172W meets the reinforced insulation requirement for mains-separated interfaces in industrial power supplies, motor drives, and PLC digital inputs. Current transfer ratio spans 63% min to 125% max at 10 mA forward current. The 2:1 spread means the downstream circuit must tolerate a gain variation of roughly 2× across the batch — a logic input with a Schmitt trigger or a comparator with hysteresis handles this without false edges; a linear feedback loop may need a tighter CTR bin or a secondary trim. Vce(sat) is 300 mV max, which keeps the output voltage drop low enough to drive a 5 V logic input directly from the 70 V-rated output stage. The 50 mA continuous output current per channel suits isolated relay drivers, solid-state switch interfaces, and isolated I²C or SPI buffers where the load is a few milliamps. Switching speed is modest — 1 µs rise and 2 µs fall typical, with turn-on at 2 µs and turn-off at 3 µs. This limits the part to data rates below roughly 100 kbit/s, which covers status feedback, fault signals, and low-speed isolated serial links but not high-speed fieldbus or gate-drive pulse trains. ## Temperature grade and environment The 100 mA absolute-maximum forward current and 1.35 V typical forward voltage are standard for an LED-driven phototransistor optocoupler in this package class.","metaTitle":"onsemi CNY172W Optoisolator, 5300Vrms, 6-DIP","metaDescription":"onsemi CNY172W obsolete optoisolator, 5300Vrms isolation, 63-125% CTR, 6-DIP through-hole package. 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":"Through Hole","Package / Case":"6-DIP (0.400\\\", 10.16mm)","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-DIP","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/CNY172W/alternatives.json"},"ai":{"faq":[{"question":"What package does the CNY172W use?","answer":"Supplied in Tube format."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/CNY172W","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/CNY172W when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T06:26:35.343Z","lastPublished":"2026-07-21T06:26:35.343Z","indexable":true}}