{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SFH617A-1","brand":"Vishay","brandSlug":"vishay","productSlug":"SFH617A-1","canonicalUrl":"https://icboms.com/vishay/SFH617A-1","factsUrl":"https://icboms.com/api/mcp/products/SFH617A-1","rawCanonicalId":null},"summary":{"shortDescription":"Vishay SFH617A-1 optocoupler, 1-channel transistor output, 5300Vrms isolation, 40-80% CTR at 10mA, 70V Vce, 4-DIP through-hole package, -55°C to 110°C.","salesMarkdown":"## 5300Vrms isolation in a 4-DIP through-hole package The Vishay SFH617A-1 is a 1-channel phototransistor optocoupler in a 4-DIP through-hole package, providing 5300Vrms of galvanic isolation between input and output. It is built for industrial power supplies, motor drives, PLC I/O modules, and any application where a clean isolation barrier is needed between a low-voltage control side and a higher-voltage load side. The DC input drives an infrared LED, and the phototransistor output can switch up to 70V at 50mA per channel. The current transfer ratio (CTR) is specified at 40% minimum and 80% maximum, both measured at a forward current of 10mA. This means at 10mA input, the output transistor can sink between 4mA and 8mA — a wide spread that the designer must budget for in the pull-up resistor and threshold logic. The typical turn-on time is 3µs and turn-off time is 2.3µs, with rise and fall times of 2µs each. These switching speeds are adequate for 50/60 Hz line-sync detection, relay drivers, and low-speed digital isolation up to about 100 kbps, but not for high-speed data links. ## Temperature range and operating limits The 70V output breakdown and 50mA continuous output current give solid headroom for 24V industrial logic and relay coils. Forward voltage is typically 1.35V, with an absolute maximum forward current of 60mA — a standard 330Ω series resistor from a 5V logic rail lands near 11mA, right in the CTR test condition sweet spot.","metaTitle":"SFH617A-1 Optocoupler, 5300Vrms Isolation","metaDescription":"SFH617A-1 optocoupler: 5300Vrms isolation, 40-80% CTR at 10mA, 70V Vce max, -55°C to 110°C, 4-DIP through hole. Active lifecycle, 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":"Through Hole","Package / Case":"4-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Number of Channels":"1","Voltage - Isolation":"5300Vrms","Vce Saturation (Max)":"400mV","Operating Temperature":"-55°C ~ 110°C","Rise / Fall Time (Typ)":"2µs, 2µs","Voltage - Output (Max)":"70V","Supplier Device Package":"4-DIP","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"80% @ 10mA","Current Transfer Ratio (Min)":"40% @ 10mA","Voltage - Forward (Vf) (Typ)":"1.35V","Turn On / Turn Off Time (Typ)":"3µs, 2.3µs","Current - DC Forward (If) (Max)":"60 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.92","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.94000","currency":"USD"},{"qty":10,"price":"$0.61200","currency":"USD"},{"qty":100,"price":"$0.40120","currency":"USD"},{"qty":1000,"price":"$0.31672","currency":"USD"},{"qty":2000,"price":"$0.29561","currency":"USD"},{"qty":5000,"price":"$0.28505","currency":"USD"},{"qty":10000,"price":"$0.28083","currency":"USD"},{"qty":25000,"price":"$0.27450","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a98d53b6ebe738054adad4da6bcda228.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy the SFH617A-1 and how is it quoted?","answer":"The SFH617A-1 is available to order through independent distribution. The part is active, so standard lead times apply through the broker channel."},{"question":"What is the current transfer ratio (CTR) of SFH617A-1?","answer":"The CTR is 40% minimum and 80% maximum, both specified at a forward current of 10mA. This is a standard bin for general-purpose optocouplers."},{"question":"How does SFH617A-1 compare to PC817?","answer":"Both are 1-channel transistor-output optocouplers in 4-DIP packages with similar isolation ratings (PC817 is typically 5000Vrms). The SFH617A-1 offers a wider operating temperature range (-55°C to 110°C vs PC817's -30°C to 100°C typical) and a tighter CTR bin at 10mA. The PC817 is more widely second-sourced, but the SFH617A-1 is a direct pin-compatible drop-in for designs needing the extended temperature range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/SFH617A-1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/SFH617A-1 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}}