{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CNY173SR2M","brand":"onsemi","brandSlug":"onsemi","productSlug":"CNY173SR2M","canonicalUrl":"https://icboms.com/onsemi/CNY173SR2M","factsUrl":"https://icboms.com/api/mcp/products/CNY173SR2M","rawCanonicalId":null},"summary":{"shortDescription":"onsemi CNY173SR2M single-channel phototransistor optoisolator, DC input, transistor with base output, 4170Vrms isolation, 100-200% CTR at 10mA, 6-SMD gull wing package, Tape & Reel.","salesMarkdown":"## 4170Vrms isolation in a 6-SMD gull wing The onsemi CNY173SR2M is a single-channel phototransistor optoisolator in a 6-SMD gull wing package, delivering 4170Vrms of galvanic isolation between a DC input LED and a transistor-with-base output. This isolation rating suits it for breaking ground loops and protecting low-voltage logic from high-side transients in industrial control, motor drive, and power supply feedback paths. ## CTR window and switching response Turn-on and turn-off times are 2µs and 3µs typical, with rise and fall times of 4µs and 3.5µs max. This places the CNY173SR2M in the medium-speed class for phototransistor isolators — fast enough for 100kHz PWM feedback or serial status polling, but not for high-speed data links where a digital isolator would be needed. The output transistor can sink up to 50mA continuous with a maximum Vce saturation of 400mV, and the collector-emitter breakdown is rated at 70V. This means it can directly drive a small relay coil, a PLC input, or a 24V logic gate without a secondary buffer transistor. The base product number is CNY173, and the SR2M suffix denotes the Tape & Reel packaging option for automated pick-and-place assembly.","metaTitle":"onsemi CNY173SR2M Optoisolator, 4170Vrms, 100-200% CTR","metaDescription":"onsemi CNY173SR2M single-channel phototransistor optoisolator, 4170Vrms isolation, 100-200% CTR at 10mA, 6-SMD gull wing. Active production, sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Mfr":"onsemi","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Input Type":"DC","Output Type":"Transistor with Base","Mounting Type":"Surface Mount","Package / Case":"6-SMD, Gull Wing","Product Status":"Active","lifecycle_stage":"eol_hot","Number of Channels":"1","Base Product Number":"CNY173","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)":"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)":"60 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/dbff72ad709f03fb6695b1cadd7ed9fe.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CNY173SR2M/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/CNY173SR2M","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/CNY173SR2M when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}