{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FOD4208TV","brand":"onsemi","brandSlug":"onsemi","productSlug":"FOD4208TV","canonicalUrl":"https://icboms.com/onsemi/FOD4208TV","factsUrl":"https://icboms.com/api/mcp/products/FOD4208TV","rawCanonicalId":null},"summary":{"shortDescription":"onsemi FOD4208TV, 1-channel triac output optoisolator, 5000Vrms isolation, 800V off-state, 10kV/µs minimum static dV/dt, 60µs turn-on time, through-hole 6-DIP (0.400\", 10.16mm) package, Bulk.","salesMarkdown":"## When you need to switch an AC load without a zero-cross window The FOD4208TV is a 1-channel triac-output optoisolator from onsemi that provides 5000Vrms of galvanic isolation between a logic-side LED and a high-voltage triac driver. Its 800V off-state voltage rating suits direct switching of 240VAC or 480VAC lines with margin, and the 10kV/µs minimum static dV/dt immunity keeps the output from false-triggering on fast mains transients or motor back-EMF. Unlike zero-crossing types, this part has no zero-cross circuit, so the triac can be triggered at any phase angle. That makes it useful for phase-control dimming, soft-start, or any application where you need to turn on mid-cycle. ## What the key ratings mean for your BOM The 60µs turn-on time is the delay from LED current to triac conduction. The 2mA max LED trigger current means a standard GPIO or logic output can drive it directly. Hold current (Ih) is 500µA. If the load current drops below that near the AC zero-cross, the triac may commutate off and need re-triggering each half-cycle. Design the minimum load current to stay above 500µA, or add a dummy load. The -55°C to 100°C operating range covers industrial and outdoor telecom enclosures. The 1.28V typical forward voltage and 30mA max LED current are standard for a phototriac coupler. ## Lifecycle and sourcing reality The FOD4208TV is listed as Active and ROHS3 compliant. The through-hole 6-DIP package is widely stocked by distributors; the Bulk option means it ships in tubes or trays. Approvals include cUL, FIMKO, UL, and VDE, which simplifies compliance for safety-listed equipment sold in North America and Europe.","metaTitle":"FOD4208TV onsemi Optoisolator Triac 5kV 800V DIP-6","metaDescription":"FOD4208TV onsemi 5kVrms triac output optoisolator, 800V off-state, 10kV/µs dV/dt, 60µs turn-on, through-hole DIP-6. Active, ROHS3. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Bulk","Output Type":"Triac","Turn On Time":"60µs","Mounting Type":"Through Hole","Package / Case":"6-DIP (0.400\\\", 10.16mm)","Approval Agency":"cUL, FIMKO, UL, VDE","lifecycle_stage":"eol_hot","Number of Channels":"1","Static dV/dt (Min)":"10kV/µs","Current - Hold (Ih)":"500µA","Voltage - Isolation":"5000Vrms","Voltage - Off State":"800 V","Operating Temperature":"-55°C ~ 100°C","Zero Crossing Circuit":"No","Supplier Device Package":"6-DIP","Voltage - Forward (Vf) (Typ)":"1.28V","Current - DC Forward (If) (Max)":"30 mA","Current - LED Trigger (Ift) (Max)":"2mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.2","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.20000","currency":"USD"},{"qty":10,"price":"$2.96900","currency":"USD"},{"qty":100,"price":"$2.43210","currency":"USD"},{"qty":500,"price":"$2.05030","currency":"USD"},{"qty":1000,"price":"$1.88062","currency":"USD"},{"qty":2000,"price":"$1.80285","currency":"USD"},{"qty":5000,"price":"$1.76750","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4508d0a74baa9082fd3b0c6c58d4edcd.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order FOD4208TV or check stock?","answer":"Submit an RFQ for the FOD4208TV with your target quantity. The part is Active and in production, so lead time is determined at quote time based on distributor inventory and onsemi factory backlog. No stock-holding claim is made here; we source against your order."},{"question":"Is FOD4208TV equivalent to FOD4208?","answer":"The FOD4208 (without the TV suffix) is the same die in a different package variant. The FOD4208TV specifically comes in a Bulk-packaged through-hole DIP-6. The FOD4208 may be offered in tape-and-reel or other packaging; check the specific order code for your assembly process. Electrically they are identical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/FOD4208TV","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/FOD4208TV when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:11:13.984Z","lastPublished":"2026-07-17T20:11:13.984Z","indexable":true}}