{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SFH1690BT","brand":"Vishay","brandSlug":"vishay","productSlug":"SFH1690BT","canonicalUrl":"https://icboms.com/vishay/SFH1690BT","factsUrl":"https://icboms.com/api/mcp/products/SFH1690BT","rawCanonicalId":null},"summary":{"shortDescription":"Vishay SFH1690BT optocoupler, single-channel DC-input transistor output, 3750 Vrms isolation, 4-SMD gull-wing package, 100-300% CTR at 5 mA, -55 to +110 °C.","salesMarkdown":"## Isolation rating and signal transfer The SFH1690BT: The 3750 Vrms isolation rating defines the reinforced insulation barrier between the input LED and output phototransistor. This is the spec that certifies the part for basic safety isolation in mains-referenced circuits — think AC line monitoring, motor-drive feedback, or any application where the control side must stay galvanically separated from the power stage. Current transfer ratio (CTR) is specified as a range: 100% minimum to 300% maximum, both measured at 5 mA forward current. The 3:1 spread means the receiver-side logic threshold must tolerate the full band; a 100% CTR at 5 mA gives 5 mA output drive, while a 300% unit delivers 15 mA into the same load. Design the pull-up resistor and input current for the minimum case, and the circuit works across the entire distribution. Switching speed is characterised by rise/fall times of 3 µs and 4 µs typical, and turn-on/turn-off times of 5 µs and 3 µs typical. This places the part in the general-purpose optocoupler class — adequate for 10–100 kHz data rates or relay-driving logic, but not for high-speed isolated communication like I²C or SPI without careful derating. Housed in a 4-SMD gull-wing package with a 4-SOP supplier device package designation, the SFH1690BT uses the standard SOP-4 footprint. The gull-wing leads provide visual solder-joint inspection access and relieve thermal stress between the package body and the board during reflow. The surface-mount form factor suits automated pick-and-place assembly. Operating temperature range of -55 °C to +110 °C covers the full industrial band with margin. The 70 V maximum output voltage and 50 mA continuous output current per channel define the load-driving envelope — suitable for driving a downstream logic gate input, a small relay coil, or a discrete transistor base.","metaTitle":"Vishay SFH1690BT Optocoupler, 3750 Vrms, Transistor Output","metaDescription":"Active Vishay SFH1690BT optocoupler, 3750 Vrms isolation, 100–300% CTR at 5 mA, 4-SMD gull wing, ROHS3. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"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)":"300% @ 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":"$0.89","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,"alternativesUrl":"https://icboms.com/api/mcp/products/SFH1690BT/alternatives.json"},"ai":{"faq":[{"question":"What is the current transfer ratio (CTR) of the SFH1690BT?","answer":"The CTR is specified as 100% minimum to 300% maximum at 5 mA forward current. This 3:1 range must be accommodated in the receiver-side circuit design."},{"question":"What package does the SFH1690BT use?","answer":"The SFH1690BT comes in a 4-SMD gull-wing package (4-SOP supplier device package), suitable for surface-mount assembly with standard SOP-4 footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/SFH1690BT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/SFH1690BT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}