{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SFH690CT","brand":"Vishay","brandSlug":"vishay","productSlug":"SFH690CT","canonicalUrl":"https://icboms.com/vishay/SFH690CT","factsUrl":"https://icboms.com/api/mcp/products/SFH690CT","rawCanonicalId":null},"summary":{"shortDescription":"Vishay SFH690CT optocoupler, 1-channel DC input, transistor output, 3750Vrms isolation, 100-200% CTR at 5mA, 4-SMD gull wing package, surface mount, -55°C to 100°C.","salesMarkdown":"## 3750Vrms isolation in a compact 4-SOP The Vishay SFH690CT is a single-channel optocoupler with a phototransistor output, designed for signal isolation in industrial and power-management circuits. Its 3750Vrms isolation rating suits it for breaking ground loops and providing safety isolation in AC mains or DC bus monitoring applications. The device comes in a 4-SMD gull-wing package (4-SOP with 2.54mm pin pitch), surface-mount ready for automated assembly. ## CTR range and drive margin The current transfer ratio is specified at 100% minimum and 200% maximum, both measured at a forward current of 5mA. This 2:1 spread is typical for transistor-output optocouplers and means the designer must ensure the receiving logic or load sees a valid signal across the full CTR range. A 1.15V typical forward voltage at the same 5mA drive helps keep the LED power budget predictable. ## Switching speed and output ratings Rise and fall times are 3µs and 4µs typical, with turn-on and turn-off times of 5µs and 3µs respectively. This places the SFH690CT in the general-purpose isolation class — adequate for 50/60 Hz line monitoring, relay drivers, and low-speed digital isolation, but not for high-speed data links. The output transistor is rated for 70V maximum and 50mA continuous current, with a saturation voltage of 300mV maximum at rated drive. ## Temperature range and environment The maximum DC forward current is 50mA, so the LED drive should be kept well below that for reliable long-term operation. ## Lifecycle and compliance No last-time-buy or obsolescence risk is indicated.","metaTitle":"Vishay SFH690CT Optocoupler, 3750Vrms, Transistor Output","metaDescription":"Vishay SFH690CT optocoupler with 3750Vrms isolation, transistor output, 100-200% CTR at 5mA, -55°C to 100°C. Active, ROHS3.","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)":"300mV","Operating Temperature":"-55°C ~ 100°C","Rise / Fall Time (Typ)":"3µs, 4µs","Voltage - Output (Max)":"70V","Supplier Device Package":"4-SOP (2.54mm)","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":"$0.78","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.78000","currency":"USD"},{"qty":10,"price":"$0.51000","currency":"USD"},{"qty":100,"price":"$0.33390","currency":"USD"},{"qty":1000,"price":"$0.26361","currency":"USD"},{"qty":2000,"price":"$0.24604","currency":"USD"},{"qty":6000,"price":"$0.23725","currency":"USD"},{"qty":10000,"price":"$0.23373","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/fc99887352e7b547dd93dcd04d774df1.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/SFH690CT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/SFH690CT 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}}