{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FOD4218SV","brand":"onsemi","brandSlug":"onsemi","productSlug":"FOD4218SV","canonicalUrl":"https://icboms.com/onsemi/FOD4218SV","factsUrl":"https://icboms.com/api/mcp/products/FOD4218SV","rawCanonicalId":null},"summary":{"shortDescription":"onsemi FOD4218SV, single-channel triac-output optoisolator, 5000 Vrms isolation, 800 V off-state, 10 kV/µs dV/dt, 6-SMD gull-wing package, tube.","salesMarkdown":"## Triac-output isolator for line-voltage switching The FOD4218SV is a single-channel optoisolator with a triac output from onsemi, rated for 5000 Vrms isolation and 800 V off-state voltage. It switches on in 60 µs typ and requires only 1.3 mA max LED trigger current, making it a direct fit for driving a triac or SCR in 240 VAC or 480 VAC loads without an external zero-cross circuit. ## Transient immunity and temperature range Static dV/dt is a minimum of 10 kV/µs, which means the output triac won't false-trigger from fast voltage spikes on a noisy mains line — a common failure in motor-drive and relay-replacement circuits. Operating temperature spans -55°C to 100°C, so it holds up in outdoor cabinet or industrial oven environments without derating. ## Package, approvals, and compliance Housed in a 6-SMD gull-wing package (supplier device package 6-SMD), shipped in tube. Carries cUL, FIMKO, UL, and VDE approvals, and is ROHS3 compliant.","metaTitle":"FOD4218SV onsemi Optoisolator, Triac Output, 5 kVrms","metaDescription":"Active onsemi FOD4218SV optoisolator with triac output, 5000 Vrms isolation, 800 V off-state, 10 kV/µs dV/dt. 6-SMD gull-wing package. ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Tube","Output Type":"Triac","Turn On Time":"60µs","Mounting Type":"Surface Mount","Package / Case":"6-SMD, Gull Wing","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-SMD","Voltage - Forward (Vf) (Typ)":"1.28V","Current - DC Forward (If) (Max)":"30 mA","Current - LED Trigger (Ift) (Max)":"1.3mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.84","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$5.84000","currency":"USD"},{"qty":10,"price":"$4.12700","currency":"USD"},{"qty":100,"price":"$3.38040","currency":"USD"},{"qty":500,"price":"$2.84978","currency":"USD"},{"qty":1000,"price":"$2.61393","currency":"USD"},{"qty":2000,"price":"$2.50584","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4508d0a74baa9082fd3b0c6c58d4edcd.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between FOD4218 and FOD4218SV?","answer":"The FOD4218SV is the surface-mount gull-wing variant (6-SMD) of the through-hole FOD4218. Both share the same 5000 Vrms isolation, 800 V off-state, 10 kV/µs dV/dt, and triac output. The SV suffix indicates the SMD package in tube; the through-hole version comes in bulk."},{"question":"Is the FOD4218SV RoHS compliant?","answer":"Yes, it is listed as ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/FOD4218SV","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/FOD4218SV 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}}