{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FOD817B300W","brand":"onsemi","brandSlug":"onsemi","productSlug":"FOD817B300W","canonicalUrl":"https://icboms.com/onsemi/FOD817B300W","factsUrl":"https://icboms.com/api/mcp/products/FOD817B300W","rawCanonicalId":null},"summary":{"shortDescription":"onsemi FOD817B300W, single-channel DC-input transistor-output optoisolator, 5000Vrms isolation, 130-260% CTR at 5 mA, in a 4-DIP through-hole package, tube.","salesMarkdown":"## Galvanic isolation for 5 kV working voltage The FOD817B300W is a single-channel optoisolator from onsemi that provides 5000Vrms isolation between a DC-input LED and a phototransistor output. This isolation rating is the key parameter for safety barriers in AC mains-powered equipment, motor drives, and industrial I/O modules where the controller side must be protected from high-voltage transients on the field side. The 4-DIP through-hole package (0.400-inch lead spacing) is a standard footprint for optocouplers, making it a drop-in fit for many existing PCB layouts designed for the FOD817 family. ## CTR bin B and switching speed profile The B current-transfer-ratio bin guarantees 130% to 260% CTR at a forward current of 5 mA. Within the FOD817 family, the B bin sits between the A bin and the C bin. ## Active production, through-hole availability","metaTitle":"FOD817B300W Optoisolator - onsemi 5kV Transistor Output","metaDescription":"onsemi FOD817B300W optoisolator: 5000Vrms isolation, 130-260% CTR at 5mA, transistor output, 4-DIP through-hole. Active production, ROHS3.","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":"Through Hole","Package / Case":"4-DIP (0.400\\\", 10.16mm)","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-DIP","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"260% @ 5mA","Current Transfer Ratio (Min)":"130% @ 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":"$0.6200","priceTiers":[{"qty":1,"price":"$0.62000","currency":"USD"},{"qty":10,"price":"$0.38200","currency":"USD"},{"qty":100,"price":"$0.21950","currency":"USD"},{"qty":1000,"price":"$0.17180","currency":"USD"},{"qty":2000,"price":"$0.15749","currency":"USD"},{"qty":5000,"price":"$0.14317","currency":"USD"},{"qty":10000,"price":"$0.13362","currency":"USD"},{"qty":25000,"price":"$0.12885","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/97f795ec3476128abe24ed3f2e223d6c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/FOD817B300W/alternatives.json"},"ai":{"faq":[{"question":"Is FOD817B300W the same as FOD817B?","answer":"The FOD817B300W is a specific ordering code within the FOD817B family. The base part FOD817B shares the same CTR bin (130-260% at 5 mA), isolation voltage, and package outline. The '300W' suffix typically indicates a tube-packaged variant with ROHS3 compliance. Electrically, they are identical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/FOD817B300W","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/FOD817B300W 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}}