{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"IL4208-X009T","brand":"Vishay","brandSlug":"vishay","productSlug":"IL4208-X009T","canonicalUrl":"https://icboms.com/vishay/IL4208-X009T","factsUrl":"https://icboms.com/api/mcp/products/IL4208-X009T","rawCanonicalId":null},"summary":{"shortDescription":"Vishay IL4208-X009T, single-channel Triac output optoisolator, 5300 Vrms isolation, 800 V off-state, 10 kV/µs minimum static dV/dt, 35 µs turn-on, 6-SMD surface-mount package, -55°C to 100°C, ROHS3 compliant, Active.","salesMarkdown":"## What this Triac output optoisolator does on the board The IL4208-X009T is a single-channel Triac output optoisolator from Vishay. It switches AC loads up to 300 mA RMS at off-state voltages up to 800 V, with 5300 Vrms isolation between the LED input and the Triac output. The 10 kV/µs minimum static dV/dt means the output Triac stays off when the AC line commutates — no false triggering on inductive loads like motors, solenoids, or transformers. No zero-crossing circuit — the Triac fires as soon as the LED current exceeds the 2 mA maximum trigger current. This gives you phase-angle control for dimmers or soft-start, but the turn-on edge lands anywhere on the AC sine wave. ## Parametric fit for AC switching designs Forward voltage (Vf) is 1.16 V typical at 60 mA max DC forward current. The 500 µA holding current keeps the Triac latched once triggered — below that the output drops out at the AC zero-cross. 35 µs turn-on time is fast enough for 50/60 Hz line switching; the Triac output commutates at the next zero-cross after the LED current drops below Ih. Operating temperature range -55°C to 100°C covers industrial cabinet and outdoor telecom enclosures. The 6-SMD package with surface-mount footprint suits automated assembly; the Tape & Reel option feeds pick-and-place. ## Lifecycle and supply posture Approvals include CQC, CSA, cUR, UR — the CSA/cUR marks cover North American panel equipment; CQC covers China CCC market access. Sourced per RFQ against your BOM quantity.","metaTitle":"IL4208-X009T Vishay Optotriac – 5300 Vrms, 800 V Off-State","metaDescription":"Vishay IL4208-X009T single-channel Triac output optoisolator. 5300 Vrms isolation, 800 V off-state, 10 kV/µs dV/dt. 6-SMD surface mount. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Output Type":"Triac","Turn On Time":"35µs","Mounting Type":"Surface Mount","Package / Case":"6-SMD","Approval Agency":"CQC, CSA, cUR, UR","lifecycle_stage":"eol_hot","Number of Channels":"1","Static dV/dt (Min)":"10kV/µs","Current - Hold (Ih)":"500µA","Voltage - Isolation":"5300Vrms","Voltage - Off State":"800 V","Operating Temperature":"-55°C ~ 100°C","Zero Crossing Circuit":"No","Supplier Device Package":"6-SMD","Voltage - Forward (Vf) (Typ)":"1.16V","Current - DC Forward (If) (Max)":"60 mA","Current - LED Trigger (Ift) (Max)":"2mA","Current - On State (It (RMS)) (Max)":"300 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.05","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.05000","currency":"USD"},{"qty":10,"price":"$2.86300","currency":"USD"},{"qty":100,"price":"$2.34520","currency":"USD"},{"qty":500,"price":"$1.97708","currency":"USD"},{"qty":1000,"price":"$1.81346","currency":"USD"},{"qty":2000,"price":"$1.73846","currency":"USD"},{"qty":5000,"price":"$1.70438","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/04874972706ea87742f9383afd13699f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order the IL4208-X009T or check stock?","answer":"The IL4208-X009T is an Active Vishay part. Submit an RFQ with your target quantity and delivery window; we source against the BOM line and confirm availability and price at quote time. No stock-holding claim is made here."},{"question":"Is the IL4208-X009T zero-crossing?","answer":"No — the IL4208-X009T has no zero-crossing circuit. The Triac output fires immediately when the LED current exceeds the 2 mA maximum trigger current. Use a zero-crossing variant (e.g., IL4208-X009) if you need the output to switch only near the AC zero-cross."},{"question":"What is the closest pin-compatible alternative to the IL4208-X009T?","answer":"Within the same Vishay family, the IL4208-X009 (non-tape) shares the same die and ratings — 5300 Vrms, 800 V off-state, 10 kV/µs dV/dt — but ships in tube or bulk rather than Tape & Reel. Confirm the package code suffix matches your assembly line."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/IL4208-X009T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/IL4208-X009T 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}}