{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FOD4118V","brand":"onsemi","brandSlug":"onsemi","productSlug":"FOD4118V","canonicalUrl":"https://icboms.com/onsemi/FOD4118V","factsUrl":"https://icboms.com/api/mcp/products/FOD4118V","rawCanonicalId":null},"summary":{"shortDescription":"onsemi FOD4118V, optoisolator with triac output, 1-channel, 5000Vrms isolation, 800 V off-state, zero-crossing circuit, 6-DIP through-hole package, Bulk.","salesMarkdown":"## Triac output optoisolator for AC load switching The FOD4118V is a 1-channel optoisolator from onsemi with a triac output, designed to drive AC loads such as solenoids, motors, and lamps from a low-voltage logic signal. Its 5000Vrms isolation rating and 800 V off-state voltage make it suitable for 240 VAC line switching with margin for transients. The built-in zero-crossing circuit triggers the triac only when the AC voltage crosses zero, minimising inrush current and conducted EMI. ## Parametric deep-dive: dV/dt immunity and trigger current Static dV/dt is rated at a minimum of 10kV/µs — this means the output triac will not falsely trigger on fast voltage transients from inductive load switching or mains-borne spikes. In a motor-drive application, that immunity saves the nuisance tripping that a lower-rated optoisolator would cause. The maximum LED trigger current (Ift) is 1.3 mA, with a typical forward voltage of 1.25 V. Hold current (Ih) is 500 µA — the triac stays latched once triggered as long as the load current exceeds this value.","metaTitle":"FOD4118V onsemi Optoisolator Triac Output 5000Vrms 6-DIP","metaDescription":"FOD4118V onsemi optoisolator with triac output, 5000Vrms isolation, 800 V off-state, zero-crossing, 10kV/µs dV/dt. Active production, 6-DIP through-hole.","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 (0.300\\\", 7.62mm)","Approval Agency":"CSA, 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":"Yes","Supplier Device Package":"6-DIP","Voltage - Forward (Vf) (Typ)":"1.25V","Current - DC Forward (If) (Max)":"30 mA","Current - LED Trigger (Ift) (Max)":"1.3mA"}},"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/49cf8eca9dd44957a150c4b466b221d4.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between FOD4118V and the FOD4208V?","answer":"The FOD4208V is a non-zero-crossing triac driver, while the FOD4118V includes a zero-crossing circuit. Both offer 5000Vrms isolation, 10kV/µs dV/dt, and 60 µs turn-on time. Choose the FOD4208V if you need phase-angle control (e.g., dimming); choose the FOD4118V for on/off switching where zero-crossing turn-on reduces EMI."},{"question":"Can FOD4118V be used for AC load switching?","answer":"Yes — the triac output with 800 V off-state voltage and zero-crossing circuit is designed for switching AC loads up to 240 VAC. The 5000Vrms isolation provides galvanic separation between the logic-side and mains-side circuits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/FOD4118V","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/FOD4118V when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:09:33.598Z","lastPublished":"2026-07-17T20:09:33.598Z","indexable":true}}