{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CNY17F3","brand":"onsemi","brandSlug":"onsemi","productSlug":"CNY17F3","canonicalUrl":"https://icboms.com/onsemi/CNY17F3","factsUrl":"https://icboms.com/api/mcp/products/CNY17F3","rawCanonicalId":null},"summary":{"shortDescription":"onsemi CNY17F3 single-channel transistor-output optoisolator, 5300Vrms isolation, 100-200% CTR at 10mA, 6-DIP through-hole package, -55 to 100°C, obsolete.","salesMarkdown":"## Isolation and CTR — the two numbers that define fit The 5300Vrms isolation rating means this opto can withstand a 5.3 kV transient between the input LED and output phototransistor — sufficient for reinforced insulation in mains-powered industrial controls and medical equipment where the safety barrier must survive a surge without breakdown. Current transfer ratio (CTR) is specified at 100% minimum and 200% maximum, both measured at If=10mA. A guaranteed 100% floor means the output transistor can sink at least as much collector current as the LED draws — critical for driving logic inputs or relay coils without an extra gain stage. The 200% ceiling prevents saturation-induced slowdown in high-speed switching. Rise and fall times are 1µs and 2µs typical, with turn-on and turn-off times of 2µs and 3µs typical. This places the CNY17F3 in the medium-speed band — fine for 50/60 Hz line sync, PLC input sampling at a few kHz, or DC bus voltage feedback, but not for high-speed serial isolation. ## Obsolete — sourcing reality for the CNY17F3 onsemi lists the CNY17F3 as Obsolete. No official successor part number is published — the CNY17 family has been consolidated into newer isolation technologies (digital isolators, photocouplers with higher CTR binning). The -55°C to 100°C operating range covers industrial and some military-temperature environments. The 70V Vce(max) and 50mA continuous output current suit it for driving low-power loads like logic inputs, small relays, or DC solid-state switches.","metaTitle":"onsemi CNY17F3 Optoisolator, 5300Vrms, 6-DIP, Obsolete","metaDescription":"onsemi CNY17F3 single-channel transistor output optoisolator, 5300Vrms isolation, 100-200% CTR at 10mA, -55 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","Mounting Type":"Through Hole","Package / Case":"6-DIP (0.300\\\", 7.62mm)","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Number of Channels":"1","Base Product Number":"CNY17","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)":"200% @ 10mA","Current Transfer Ratio (Min)":"100% @ 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/CNY17F3/alternatives.json"},"ai":{"faq":[{"question":"What is the CTR range and why does it matter?","answer":"The CNY17F3 guarantees a current transfer ratio of 100% to 200% at If=10mA. The 100% minimum ensures the output can sink at least as much current as the LED draws, eliminating the need for a transistor buffer in many logic-input or relay-drive circuits. The 200% ceiling prevents the phototransistor from saturating too deeply, which would slow turn-off."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/CNY17F3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/CNY17F3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T06:30:08.336Z","lastPublished":"2026-07-21T06:30:08.336Z","indexable":true}}