{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CNY1733S","brand":"onsemi","brandSlug":"onsemi","productSlug":"CNY1733S","canonicalUrl":"https://icboms.com/onsemi/CNY1733S","factsUrl":"https://icboms.com/api/mcp/products/CNY1733S","rawCanonicalId":null},"summary":{"shortDescription":"onsemi CNY173 series optocoupler, CNY1733S, 1-channel DC-input transistor with base output, 5300Vrms isolation, 100-200% CTR, 6-SMD Gull Wing package, Tube.","salesMarkdown":"## 5300Vrms isolation in a 6-SMD Gull Wing The onsemi CNY1733S is a 1-channel optocoupler with a DC-input LED and a phototransistor output that brings out the base connection. The 5300Vrms isolation rating means this part can bridge a reinforced-insulation barrier between a low-voltage control side and a 70V max collector-side circuit — think PLC digital inputs, motor-drive feedback, or any isolated signal path where the transient immunity matters more than raw speed. Rated for -55°C to 100°C operating, it covers the full industrial temperature envelope including cold-start conditions down to -55°C that a commercial-grade opto would not guarantee. ## CTR floor and switching timing That 2:1 spread means the downstream receiver must tolerate a factor-of-two variation in output current — a Schmitt-trigger input or a comparator with hysteresis handles this cleanly; a bare logic gate may not. Turn-on time is 2µs typ, turn-off 3µs typ, with rise/fall of 1µs and 2µs respectively. For a 10kHz PWM isolation link the 3µs turn-off leaves about 30% of the period in transition — fine for status feedback, tight for a switching power supply loop. Output can sink 50mA continuous at up to 70V Vce, with a 300mV saturation floor at that current — the base-drive margin from the LED side sets how hard the transistor saturates, so the 100mA absolute-max forward current gives headroom to overdrive the LED for lower Vce(sat) at high collector current. ## Obsolete — sourcing through surplus channels onsemi has marked the CNY1733S as Obsolete. The 6-SMD Gull Wing package and the 5300Vrms isolation rating define the physical and electrical fit — any replacement candidate must match both the footprint and the reinforced-insulation class. Surface-mount reflow profile follows standard SnPb or Pb-free profiles for a 6-pin SOIC-style body; no special moisture sensitivity level is stated on the record.","metaTitle":"onsemi CNY1733S Optoisolator, 5300Vrms, 6-SMD Gull Wing","metaDescription":"onsemi CNY1733S optoisolator, 5300Vrms isolation, 100-200% CTR at 10mA, -55 to 100°C. Obsolete — sourced to order against RFQ through independent channels.","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":"CNY173","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-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)":"100 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e34b4a420dd134390615c9fed8bb5f31.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CNY1733S/alternatives.json"},"ai":{"faq":[{"question":"What is the CTR range of the CNY1733S?","answer":"The current transfer ratio is 100% minimum to 200% maximum, both specified at If=10mA. This 2:1 bin spread is typical for a standard optocoupler without bin-code sorting; the receiver circuit must tolerate the full range."},{"question":"What package does the CNY1733S come in?","answer":"It ships in a 6-SMD Gull Wing package (6-SMD), supplied in Tube. The supplier device package designation is 6-SMD."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/CNY1733S","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/CNY1733S when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T06:26:50.057Z","lastPublished":"2026-07-21T06:26:50.057Z","indexable":true}}