{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"IL4208","brand":"Vishay","brandSlug":"vishay","productSlug":"IL4208","canonicalUrl":"https://icboms.com/vishay/IL4208","factsUrl":"https://icboms.com/api/mcp/products/IL4208","rawCanonicalId":null},"summary":{"shortDescription":"IL4208, Vishay, Triac Output Optocoupler, 5300 Vrms Isolation, 800 V Off-State, 300 mA On-State, 35 µs Turn-On, Through Hole 6-DIP, -55°C to 100°C.","salesMarkdown":"## Triac output optocoupler for AC load switching The IL4208 from Vishay is a single-channel optocoupler with a triac output, designed to switch AC loads from a low-voltage logic or microcontroller signal. Its 5300 Vrms isolation rating provides a reinforced safety barrier between the control side and the mains-powered load, making it a standard choice for industrial motor drives, solid-state relays, and appliance controls where galvanic isolation is mandatory. The output triac is rated for 800 V off-state voltage, covering 240 VAC line switching with healthy margin, and can handle 300 mA RMS on-state current — enough to drive small AC loads like contactor coils, solenoids, or indicator lamps directly without an external triac. A minimum static dV/dt of 10 kV/µs ensures the triac does not falsely trigger from fast voltage transients common on inductive or noisy AC lines, a critical parameter in motor-drive and power-supply environments. ## Sizing the load and drive current The 300 mA RMS on-state current sets the maximum continuous load. If your load draws more, the IL4208 can drive the gate of a larger external triac or SCR. Forward voltage is 1.16 V typical, so a 3.3 V supply with a 1 kΩ resistor delivers about 2.1 mA — above the trigger threshold but well under the 60 mA absolute maximum. Hold current is 500 µA. If the load current drops below that near the AC zero-cross, the triac may turn off prematurely. For lightly inductive or resistive loads, confirm the minimum load current exceeds Ih over the full operating range. The IL4208 comes in a 6-pin DIP package with 0.300-inch (7.62 mm) body width, a standard through-hole footprint that suits point-to-point wiring or breadboard prototyping. The 6-DIP supplier device package is the same as the industry-standard footprint used by many second-source optocouplers, easing board layout. The part is ROHS3 compliant. It holds approvals from CQC, CSA, cUR, and UR, covering North American and Chinese safety standards — a useful qualification for equipment destined for those markets.","metaTitle":"IL4208 Triac Output Optocoupler, 5300 Vrms, 800 V Off-State","metaDescription":"IL4208 optocoupler with triac output, 5300 Vrms isolation, 800 V off-state, 300 mA RMS on-state. Through-hole 6-DIP. Active, 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":"35µs","Mounting Type":"Through Hole","Package / Case":"6-DIP (0.300\\\", 7.62mm)","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-DIP","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":"$3.83","priceTiers":[{"qty":1,"price":"$3.83000","currency":"USD"},{"qty":10,"price":"$2.70600","currency":"USD"},{"qty":100,"price":"$2.21670","currency":"USD"},{"qty":500,"price":"$1.86870","currency":"USD"},{"qty":1000,"price":"$1.71405","currency":"USD"},{"qty":2000,"price":"$1.64317","currency":"USD"},{"qty":5000,"price":"$1.61095","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/04874972706ea87742f9383afd13699f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/IL4208/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum load current of IL4208?","answer":"The maximum on-state current is 300 mA RMS. For loads exceeding this, the IL4208 can drive the gate of an external triac."},{"question":"Is IL4208 RoHS compliant?","answer":"Yes, the IL4208 is ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/IL4208","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/IL4208 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}}