{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CNY173TM","brand":"onsemi","brandSlug":"onsemi","productSlug":"CNY173TM","canonicalUrl":"https://icboms.com/onsemi/CNY173TM","factsUrl":"https://icboms.com/api/mcp/products/CNY173TM","rawCanonicalId":null},"summary":{"shortDescription":"onsemi CNY173TM optoisolator, 1-channel, DC input, transistor with base output, 4170Vrms isolation, 6-DIP through-hole package, tube.","salesMarkdown":"## Key ratings and what they mean for the BOM The onsemi CNY173TM is a single-channel optoisolator in a 6-DIP through-hole package, with a DC input LED and a phototransistor output that includes a base connection — the base pin allows the designer to tailor switching threshold or add feedback compensation, a feature missing from simpler three-pin optocouplers. Rated for 4170 Vrms isolation, this part meets the reinforced insulation requirements for mains-referenced circuits in industrial power supplies, motor drives, and PLC digital inputs — the 4170 Vrms figure is the one-minute hipot test voltage between input and output sides. Current transfer ratio (CTR) is specified at 100% minimum and 200% maximum at a forward current of 10 mA — this 2:1 spread means the designer must guarantee the logic threshold at the low end of CTR and still have margin at the high end to avoid saturating the output transistor in the on state. Switching speed is 4 µs rise and 3.5 µs fall typical, with turn-on and turn-off times of 2 µs and 3 µs respectively — adequate for 10–100 kHz isolated data transmission or for debouncing slow field signals, but not for high-speed digital interfaces like I²C or SPI without a Schmitt-trigger buffer on the output. No official successor part number is recorded from onsemi.","metaTitle":"onsemi CNY173TM Optoisolator, 4170Vrms, 6-DIP, Obsolete","metaDescription":"onsemi CNY173TM optoisolator, 4170Vrms isolation, 100-200% CTR at 10mA, 6-DIP through-hole. 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 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":"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-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)":"60 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/dbff72ad709f03fb6695b1cadd7ed9fe.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CNY173TM/alternatives.json"},"ai":{"faq":[{"question":"What package does the CNY173TM come in?","answer":"The CNY173TM is supplied in a 6-DIP (0.400\", 10.16 mm) through-hole package, shipped in tubes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/CNY173TM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/CNY173TM when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T06:27:31.882Z","lastPublished":"2026-07-21T06:27:31.882Z","indexable":true}}