{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CNY174TM","brand":"onsemi","brandSlug":"onsemi","productSlug":"CNY174TM","canonicalUrl":"https://icboms.com/onsemi/CNY174TM","factsUrl":"https://icboms.com/api/mcp/products/CNY174TM","rawCanonicalId":null},"summary":{"shortDescription":"onsemi CNY174TM single-channel DC-input optoisolator, transistor with base output, 4170Vrms isolation, 160-320% CTR, 6-DIP through-hole package, bulk.","salesMarkdown":"onsemi has marked the CNY174TM as Obsolete. No official successor or pin-compatible replacement is recorded from the original manufacturer. ## Isolation and signal transfer — what the ratings mean Rated for 4170Vrms isolation between input and output — this is a reinforced-grade barrier for a single-channel optocoupler, suitable for breaking ground loops in industrial control, motor drive feedback, and isolated sensor interfaces where the primary-side transient exceeds basic 2500Vrms levels. Current transfer ratio spans 160% to 320% at a forward current of 10mA. The wide CTR spread means the output transistor saturates with as little as 3.1 mA of input drive at the minimum CTR, but a design should bias for the worst-case 160% to guarantee the output pulls low across temperature and unit-to-unit variation. Switching is specified with a 4 µs rise and 3.5 µs fall time (max), and turn-on/turn-off times of 2 µs and 3 µs typical. This puts the CNY174TM in the medium-speed band — adequate for 50/60 Hz line synchronisation, relay drivers, and logic-level isolation up to about 100 kHz, but not for high-speed digital buses like SPI or I²C. ## Output and input ratings — design margins The output transistor can handle up to 70V collector-emitter voltage and 50mA continuous current per channel. That 70V ceiling covers most 24V and 48V industrial rails with headroom, but a 60V rail leaves only 10V margin — consider a higher-voltage opto if transients are expected. On the input side, the LED forward voltage is 1.35V typical, and the maximum continuous forward current is 60mA. The 6-DIP through-hole package fits standard 0.100-inch pitch sockets or solders directly into a PCB — no special reflow profile needed.","metaTitle":"onsemi CNY174TM Optoisolator, 4170Vrms, 6-DIP, Obsolete","metaDescription":"onsemi CNY174TM single-channel DC-input transistor-output optoisolator. 4170Vrms isolation, 160-320% CTR at 10mA. 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":"Bulk","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":"CNY174","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)":"320% @ 10mA","Current Transfer Ratio (Min)":"160% @ 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/CNY174TM/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/CNY174TM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/CNY174TM when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T06:28:27.837Z","lastPublished":"2026-07-21T06:28:27.837Z","indexable":true}}