{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FOD817A","brand":"onsemi","brandSlug":"onsemi","productSlug":"FOD817A","canonicalUrl":"https://icboms.com/onsemi/FOD817A","factsUrl":"https://icboms.com/api/mcp/products/FOD817A","rawCanonicalId":null},"summary":{"shortDescription":"onsemi FOD817A, single-channel DC-input transistor-output optocoupler, 4-DIP (0.300\", 7.62mm) through-hole package, 5000Vrms isolation, 80%–160% CTR at 5mA, 70V output, -55°C to 110°C, Active, ROHS3.","salesMarkdown":"## 5000Vrms isolation in a 4-DIP through-hole package The FOD817A is a single-channel DC-input transistor-output optocoupler from onsemi in a 4-DIP (0.300\", 7.62mm) through-hole package. Its 5000Vrms isolation voltage suits primary-to-secondary feedback in switch-mode power supplies, motor-drive interface circuits, and industrial PLC digital inputs where galvanic separation is mandatory. The 80%–160% current transfer ratio (CTR) at 5 mA forward current gives predictable LED drive margin — the 80% minimum guarantees the output transistor saturates with standard 5V logic inputs, even with LED ageing or temperature drift. ## Parametric deep-dive: speed, output, and temperature Rise and fall times are 4 µs and 3 µs typical — fast enough for 100 kHz switching supplies or low-speed serial isolation, but not for high-speed data links. The 70V output rating and 50 mA continuous output current handle relay drivers, gate-drive buffers, and logic-level translation up to 48 V rails. This suits outdoor telecom enclosures, under-hood automotive-adjacent electronics, and industrial motor drives where ambient heat exceeds 85°C. Maximum Vce saturation is 200 mV at rated current — low enough to keep dissipation under 10 mW per channel in most logic-level shift applications. No stock-holding claim; we source from multi-distributor channels to cover volume or spot needs.","metaTitle":"FOD817A onsemi Optocoupler – 5000Vrms, 4-DIP, Active","metaDescription":"onsemi FOD817A optocoupler: 5000Vrms isolation, 80-160% CTR at 5mA, 70V output, -55°C to 110°C, 4-DIP through-hole. Active lifecycle, ROHS3. Sourced per RFQ.","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 (0.300\\\", 7.62mm)","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)":"160% @ 5mA","Current Transfer Ratio (Min)":"80% @ 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":"$0.5100","priceTiers":[{"qty":1,"price":"$0.51000","currency":"USD"},{"qty":10,"price":"$0.31200","currency":"USD"},{"qty":100,"price":"$0.17960","currency":"USD"},{"qty":1000,"price":"$0.14053","currency":"USD"},{"qty":2000,"price":"$0.12882","currency":"USD"},{"qty":5000,"price":"$0.11711","currency":"USD"},{"qty":10000,"price":"$0.10930","currency":"USD"},{"qty":25000,"price":"$0.10540","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1beb81cf5e1c85358f551e0cb2f7b048.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/FOD817A/alternatives.json"},"ai":{"faq":[{"question":"How can I order the FOD817A or check stock and price?","answer":"Submit an RFQ with your target quantity. The FOD817A is Active and ROHS3 compliant; we source through multiple distribution channels and confirm current pricing and lead time per quote. No live stock figures are published — the quote reflects real availability at the time of request."},{"question":"Is the FOD817A the same as the FOD817 base part?","answer":"The FOD817A is a specific CTR bin variant of the FOD817 family. The base product number FOD817 covers multiple CTR grades — the 'A' suffix denotes 80–160% CTR at 5 mA. Other suffixes (B, C) have different CTR ranges. All share the same 5000Vrms isolation, 4-DIP package, and electrical ratings except the CTR bin."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/FOD817A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/FOD817A 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}}