{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SFH1690CT","brand":"Vishay","brandSlug":"vishay","productSlug":"SFH1690CT","canonicalUrl":"https://icboms.com/vishay/SFH1690CT","factsUrl":"https://icboms.com/api/mcp/products/SFH1690CT","rawCanonicalId":null},"summary":{"shortDescription":"Vishay SFH1690CT optocoupler, 1-channel DC-input transistor output, 3750Vrms isolation, 100-200% CTR at 5mA, 4-SMD gull wing package, -55 to 110°C operating range.","salesMarkdown":"## 3750Vrms isolation in a 4-SOP package The Vishay SFH1690CT is a single-channel DC-input optocoupler with a transistor output, rated for 3750Vrms isolation voltage. It comes in a 4-SMD gull-wing package (4-SOP supplier package), surface-mount only. The current transfer ratio (CTR) is specified at 100% minimum and 200% maximum when driven at 5mA forward current — a tight enough window to design a reliable logic-level interface without over-specifying the LED drive. ## Switching speed and output drive Typical rise and fall times are 3µs and 4µs respectively; turn-on and turn-off times are 5µs and 3µs. That puts this part in the general-purpose isolation class — fine for 10–100 kHz digital signals, relay drivers, or PLC input modules, but not for high-speed serial links. The output transistor can sink up to 50mA and withstand 70V across the collector-emitter, with a maximum saturation voltage of 400mV at rated current. ## Temperature range and forward characteristics Operating temperature spans -55°C to 110°C, covering industrial and most automotive cabin applications. The typical forward voltage is 1.15V, and the absolute maximum DC forward current is 50mA — keep the LED drive within that limit to avoid degrading the CTR over time. ROHS3 compliant per the listing. ## Lifecycle and sourcing For dual-sourcing or a pin-compatible second source, the SFH1690 (without the 'CT' suffix) shares the same 4-SOP footprint and 3750Vrms rating, though its CTR bin may differ — verify the CTR range against your design margin.","metaTitle":"SFH1690CT Optocoupler, 3750Vrms, 100-200% CTR, 4-SOP","metaDescription":"SFH1690CT optocoupler: 3750Vrms isolation, transistor output, 100-200% CTR at 5mA, -55 to 110°C. Active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Input Type":"DC","Output Type":"Transistor","Mounting Type":"Surface Mount","Package / Case":"4-SMD, Gull Wing","lifecycle_stage":"eol_hot","Number of Channels":"1","Voltage - Isolation":"3750Vrms","Vce Saturation (Max)":"400mV","Operating Temperature":"-55°C ~ 110°C","Rise / Fall Time (Typ)":"3µs, 4µs","Voltage - Output (Max)":"70V","Supplier Device Package":"4-SOP","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"200% @ 5mA","Current Transfer Ratio (Min)":"100% @ 5mA","Voltage - Forward (Vf) (Typ)":"1.15V","Turn On / Turn Off Time (Typ)":"5µs, 3µs","Current - DC Forward (If) (Max)":"50 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.87","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.89000","currency":"USD"},{"qty":10,"price":"$0.57900","currency":"USD"},{"qty":100,"price":"$0.37970","currency":"USD"},{"qty":1000,"price":"$0.29973","currency":"USD"},{"qty":2000,"price":"$0.27975","currency":"USD"},{"qty":6000,"price":"$0.26976","currency":"USD"},{"qty":10000,"price":"$0.26576","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6553eaef6c4c78f7574108dd94e5343a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the CTR range of SFH1690CT?","answer":"The current transfer ratio is 100% minimum and 200% maximum, both specified at 5mA forward current."},{"question":"Is SFH1690CT RoHS compliant?","answer":"Yes, it is listed as ROHS3 compliant."},{"question":"Can SFH1690CT replace SFH1690?","answer":"The SFH1690 (without 'CT' suffix) shares the same 4-SOP package and 3750Vrms isolation rating, so it is pin-compatible. However, the CTR bin may differ — check the CTR range of the SFH1690 against your design's minimum and maximum requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/SFH1690CT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/SFH1690CT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}