{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CNY171FVM","brand":"onsemi","brandSlug":"onsemi","productSlug":"CNY171FVM","canonicalUrl":"https://icboms.com/onsemi/CNY171FVM","factsUrl":"https://icboms.com/api/mcp/products/CNY171FVM","rawCanonicalId":null},"summary":{"shortDescription":"onsemi CNY171FVM single-channel optoisolator, DC input, transistor with base output, 4170Vrms isolation, 40-80% CTR at 10mA, 6-SMD gull wing package, tube.","salesMarkdown":"## Obsolete — sourcing from independent channels The CNY171FVM: No stock-holding claim is made here. ## Isolation voltage and what it means for the board Rated for 4170Vrms isolation — this is a reinforced-insulation grade optocoupler, suitable for safety barriers in medical, industrial, and power-supply feedback loops where the primary-to-secondary isolation must withstand a 4 kV hipot test. The 6-SMD gull wing package (6-SMD, Gull Wing) is rework-friendly under a hot-air station. The exposed leads are visible for inspection and the package body is small enough that a controlled reflow profile lifts the part without lifting the pads — provided the board is preheated to 100°C to reduce thermal shock. ## Current transfer ratio and switching speed — the gain budget CTR is specified at 40% minimum to 80% maximum at If=10mA. This 2:1 spread means the driven load (a logic gate input, a microcontroller pin, or a low-power relay coil) must tolerate the full gain variation without saturating or failing to switch. Design the collector load resistor for the minimum CTR to guarantee turn-on at the lowest LED current. Turn-on time is 2µs typical, turn-off 3µs typical; rise/fall times are 4µs and 3.5µs respectively. This sets a practical data rate ceiling around 100 kbit/s in a saturated-switching circuit — fast enough for 50/60 Hz zero-crossing detection, relay drivers, and isolated serial links at moderate baud rates, but not for high-speed digital isolation. ## Temperature range and output drive Output transistor is rated for 70V Vce max and 50mA continuous collector current per channel.","metaTitle":"onsemi CNY171FVM Optoisolator, 4170Vrms, DC Input","metaDescription":"onsemi CNY171FVM single-channel optoisolator, 4170Vrms isolation, 40-80% CTR at 10mA, DC input, transistor with base output, 6-SMD gull wing.","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":"CNY171","Voltage - Isolation":"4170Vrms","Vce Saturation (Max)":"400mV","Operating Temperature":"-40°C ~ 100°C","Rise / Fall Time (Typ)":"4µs, 3.5µs (Max)","Voltage - Output (Max)":"70V","Supplier Device Package":"6-SMD","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)":"60 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/dbff72ad709f03fb6695b1cadd7ed9fe.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CNY171FVM/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to CNY171FVM?","answer":"The base product number CNY171 family includes multiple CTR and package variants; a parametric search within the CNY171 family may yield a functionally similar part in the same 6-SMD footprint, but each variant must be verified for CTR range, isolation voltage, and switching speed against the BOM requirements."},{"question":"What compliance documentation does onsemi provide for CNY171FVM?","answer":"The part is from the CNY171 family; typical onsemi optoisolators carry UL recognition and RoHS compliance, but this specific variant's documentation status should be confirmed at RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/CNY171FVM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/CNY171FVM when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T06:25:11.534Z","lastPublished":"2026-07-21T06:25:11.534Z","indexable":true}}