{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SFH618A-3X017","brand":"Vishay","brandSlug":"vishay","productSlug":"SFH618A-3X017","canonicalUrl":"https://icboms.com/vishay/SFH618A-3X017","factsUrl":"https://icboms.com/api/mcp/products/SFH618A-3X017","rawCanonicalId":null},"summary":{"shortDescription":"Vishay SFH618A-3X017 single-channel transistor-output optocoupler, 5300Vrms isolation, 100-200% CTR at 1mA, 55V output max, 4-SMD Gull Wing package, -55°C to 100°C.","salesMarkdown":"## 5300Vrms isolation — the application driver The SFH618A-3X017 is a Vishay single-channel transistor-output optocoupler that delivers 5300Vrms galvanic isolation between input and output. That isolation rating puts it squarely in industrial and power-conversion designs — motor drives, switched-mode power supply feedback loops, PLC digital inputs, and any interface where a 50/60 Hz mains or DC-bus voltage must be kept off the control logic. The transistor output is the workhorse topology: simple to bias, no external driver needed, and the collector-emitter rating of 55V gives headroom for 24V industrial rails. ## The -3 CTR bin at 1 mA The -3 suffix in the order code selects the 100% to 200% current transfer ratio range, measured at 1 mA forward current. That means with 1 mA through the LED, the output transistor can sink at least 1 mA and up to 2 mA at the collector — a tighter, higher-gain bin than the -1 or -2 variants. For a design that drives the LED from a GPIO with limited current capability, or that needs consistent gain across temperature, the -3 bin gives a known floor without overdriving the input. The typical forward voltage is 1.1V at that current, so a 3.3V logic rail can drive it through a series resistor with margin. ## Temperature range and switching speed The 3.5 µs rise and 5 µs fall times, plus 6 µs turn-on and 5.5 µs turn-off, suit 10-50 kHz switching applications like isolated gate drives or low-speed serial isolation. For faster data rates (MHz-range), a logic-output optocoupler would be the better fit. ## Package, mounting, and compliance Supplied in a 4-SMD Gull Wing package (Tube shipment), surface-mount compatible with standard reflow profiles. The gull-wing leads give a visible solder joint for inspection — useful in high-reliability assembly. ROHS3 compliant per the listing, with no exemption issues. Active lifecycle status from Vishay means no end-of-life notice to track; this part remains a current catalog item.","metaTitle":"SFH618A-3X017 Vishay Optocoupler, 5300Vrms, 4-SMD Gull Wing","metaDescription":"SFH618A-3X017 Vishay transistor-output optocoupler with 5300Vrms isolation, 100-200% CTR at 1mA, -55°C to 100°C. Active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Tube","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":"5300Vrms","Vce Saturation (Max)":"400mV","Operating Temperature":"-55°C ~ 100°C","Rise / Fall Time (Typ)":"3.5µs, 5µs","Voltage - Output (Max)":"55V","Supplier Device Package":"4-SMD","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"200% @ 1mA","Current Transfer Ratio (Min)":"100% @ 1mA","Voltage - Forward (Vf) (Typ)":"1.1V","Turn On / Turn Off Time (Typ)":"6µs, 5.5µs","Current - DC Forward (If) (Max)":"60 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.14","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.14000","currency":"USD"},{"qty":10,"price":"$0.72200","currency":"USD"},{"qty":100,"price":"$0.53440","currency":"USD"},{"qty":500,"price":"$0.49106","currency":"USD"},{"qty":1000,"price":"$0.40440","currency":"USD"},{"qty":2000,"price":"$0.38419","currency":"USD"},{"qty":5000,"price":"$0.37552","currency":"USD"},{"qty":10000,"price":"$0.36685","currency":"USD"},{"qty":25000,"price":"$0.36108","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4bb15ce016d1cbb8f2e268ef9c695016.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the current transfer ratio (CTR) of SFH618A-3X017 at 1mA?","answer":"The -3 bin specifies a CTR range of 100% minimum to 200% maximum, measured at 1 mA forward current. This is a tighter, higher-gain bin than the -1 or -2 suffix variants."},{"question":"Is SFH618A-3X017 RoHS compliant?","answer":"Yes, the SFH618A-3X017 is listed as ROHS3 compliant, meeting the current EU RoHS exemption framework."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/SFH618A-3X017","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/SFH618A-3X017 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}}