{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MOC3031SR2M","brand":"onsemi","brandSlug":"onsemi","productSlug":"MOC3031SR2M","canonicalUrl":"https://icboms.com/onsemi/MOC3031SR2M","factsUrl":"https://icboms.com/api/mcp/products/MOC3031SR2M","rawCanonicalId":null},"summary":{"shortDescription":"onsemi MOC3031SR2M, single-channel triac output optoisolator, 4170Vrms isolation, zero-crossing circuit, 6-SMD gull wing package, surface mount, -40°C to 85°C, UL recognized, ROHS3 compliant.","salesMarkdown":"## Active production, UL-recognized triac optoisolator The MOC3031SR2M from onsemi is an active-production optoisolator with a triac output, rated for 4170Vrms isolation and featuring a built-in zero-crossing circuit. It is UL recognized and ROHS3 compliant. The part is supplied in a 6-SMD gull wing package for surface-mount assembly, available in Tape & Reel or Cut Tape. The industrial temperature range of -40°C to 85°C suits outdoor and factory-floor environments. ## 4170Vrms isolation and 1kV/µs dV/dt for AC mains switching With 4170Vrms isolation and a minimum static dV/dt of 1kV/µs, this optoisolator provides robust galvanic separation between low-voltage control logic and 250 V off-state AC lines. The high dV/dt immunity prevents false triggering from line transients or inductive load switching. The zero-crossing circuit ensures the triac turns on near the AC voltage zero, minimizing inrush current and conducted EMI — a practical advantage for resistive or lightly inductive loads like heaters, solenoid valves, and lamp ballasts. The LED trigger current (Ift) is 15mA max, and the forward voltage (Vf) is 1.25V typical. The input LED can handle up to 60 mA continuous forward current, giving margin for derating over temperature. ## Lifecycle and sourcing: active, ROHS3, surface-mount Compliance is straightforward: ROHS3 compliant and UL recognized. The 6-SMD gull wing package is a standard footprint shared with many MOC30xx series parts. For volume procurement, the part is sourced to order via RFQ — no stock-holding claim is made here. The Tape & Reel option supports automated pick-and-place for production runs.","metaTitle":"MOC3031SR2M onsemi Optoisolator – 4170Vrms Triac Output","metaDescription":"MOC3031SR2M onsemi optoisolator with triac output, 4170Vrms isolation, zero-crossing circuit, 6-SMD gull wing package, -40°C to 85°C.","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","Mounting Type":"Surface Mount","Package / Case":"6-SMD, Gull Wing","Approval Agency":"UL","lifecycle_stage":"eol_hot","Number of Channels":"1","Static dV/dt (Min)":"1kV/µs","Current - Hold (Ih)":"400µA (Typ)","Voltage - Isolation":"4170Vrms","Voltage - Off State":"250 V","Operating Temperature":"-40°C ~ 85°C","Zero Crossing Circuit":"Yes","Supplier Device Package":"6-SMD","Voltage - Forward (Vf) (Typ)":"1.25V","Current - DC Forward (If) (Max)":"60 mA","Current - LED Trigger (Ift) (Max)":"15mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.48","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.48000","currency":"USD"},{"qty":10,"price":"$0.93600","currency":"USD"},{"qty":100,"price":"$0.69270","currency":"USD"},{"qty":500,"price":"$0.63650","currency":"USD"},{"qty":1000,"price":"$0.52417","currency":"USD"},{"qty":2000,"price":"$0.49796","currency":"USD"},{"qty":5000,"price":"$0.48673","currency":"USD"},{"qty":10000,"price":"$0.47550","currency":"USD"}]},"links":{"datasheetUrl":"https://rocelec.widen.net/view/pdf/rf0pcmnkv6/FAIR-S-A0002364056-1.pdf?t.download=true&u=5oefqw","sourceUrl":null},"ai":{"faq":[{"question":"Does MOC3031SR2M have zero crossing?","answer":"Yes, the MOC3031SR2M includes a zero-crossing circuit that turns on the triac near the AC voltage zero crossing, reducing inrush current and EMI."},{"question":"Is MOC3031SR2M suitable for switching AC mains loads?","answer":"Yes, with a 250 V off-state voltage rating, 4170Vrms isolation, and zero-crossing switching, it is designed for driving AC mains loads such as relays, solenoids, and small motors via an external triac or SCR."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/MOC3031SR2M","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/MOC3031SR2M when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:09:12.153Z","lastPublished":"2026-07-17T20:09:12.153Z","indexable":true}}