{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FOD817S","brand":"onsemi","brandSlug":"onsemi","productSlug":"FOD817S","canonicalUrl":"https://icboms.com/onsemi/FOD817S","factsUrl":"https://icboms.com/api/mcp/products/FOD817S","rawCanonicalId":null},"summary":{"shortDescription":"onsemi FOD817S, single-channel DC-input transistor-output optoisolator, 5000Vrms isolation, 4-SMD gull-wing surface-mount package, 50%–600% CTR at 5mA, -55°C to 110°C operating range.","salesMarkdown":"## 5000Vrms isolation for industrial and power applications The FOD817S from onsemi is a single-channel optoisolator with a DC input and transistor output, rated for 5000Vrms isolation. That isolation level suits it for breaking ground loops in motor drives, PLC digital inputs, and switch-mode power supply feedback paths where safety isolation is required. The 4-SMD gull-wing package is a surface-mount variant of the common FOD817 through-hole family, letting you drop it onto a reflow assembly without a hand-loading step. ## CTR and switching speed for signal integrity Current transfer ratio spans 50% to 600% at a forward current of 5mA. This wide spread means you design the pull-up resistor and threshold for the minimum CTR; the upper end just gives you extra margin on output saturation. Maximum Vce saturation is 200mV, which keeps the output voltage drop low when the transistor is fully on, important for logic-level compatibility with 3.3V or 5V systems.","metaTitle":"FOD817S onsemi Optoisolator 5000Vrms Transistor Output 4-SMD","metaDescription":"onsemi FOD817S optoisolator: 5000Vrms isolation, transistor output, 50-600% CTR at 5mA, -55°C to 110°C, 4-SMD gull wing, Active. RFQ for pricing and lead time.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Mfr":"onsemi","Series":"-","Package":"Tube","Input Type":"DC","Output Type":"Transistor","Mounting Type":"Surface Mount","Package / Case":"4-SMD, Gull Wing","Product Status":"Active","lifecycle_stage":"eol_hot","Number of Channels":"1","Base Product Number":"FOD817","Voltage - Isolation":"5000Vrms","Vce Saturation (Max)":"200mV","Operating Temperature":"-55°C~110°C","Rise / Fall Time (Typ)":"4µs, 3µs","Voltage - Output (Max)":"70V","Supplier Device Package":"4-SMD","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"600% @ 5mA","Current Transfer Ratio (Min)":"50% @ 5mA","Voltage - Forward (Vf) (Typ)":"1.2V","Turn On / Turn Off Time (Typ)":"-","Current - DC Forward (If) (Max)":"50 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5500","priceTiers":[{"qty":1,"price":"$0.55000","currency":"USD"},{"qty":10,"price":"$0.35900","currency":"USD"},{"qty":100,"price":"$0.23760","currency":"USD"},{"qty":1000,"price":"$0.18342","currency":"USD"},{"qty":2000,"price":"$0.16574","currency":"USD"},{"qty":5000,"price":"$0.15469","currency":"USD"},{"qty":10000,"price":"$0.14917","currency":"USD"},{"qty":25000,"price":"$0.14696","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/97f795ec3476128abe24ed3f2e223d6c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/FOD817S/alternatives.json"},"ai":{"faq":[{"question":"Is the FOD817S RoHS compliant?","answer":"Yes, it is ROHS3 Compliant."},{"question":"What is the closest functional alternative to the FOD817S?","answer":"The through-hole FOD817A300W and the tape-and-reel FOD817ASD are electrically identical — same 5000Vrms isolation, same 50%–600% CTR range, same 200mV Vce saturation. The difference is package: FOD817S is a surface-mount tube, FOD817A300W is through-hole tube, FOD817ASD is surface-mount tape-and-reel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/FOD817S","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/FOD817S 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}}