{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MOC3053SM","brand":"onsemi","brandSlug":"onsemi","productSlug":"MOC3053SM","canonicalUrl":"https://icboms.com/onsemi/MOC3053SM","factsUrl":"https://icboms.com/api/mcp/products/MOC3053SM","rawCanonicalId":null},"summary":{"shortDescription":"onsemi MOC3053SM optoisolator, Triac output, 1-channel, 6-SMD Gull Wing package, 4170Vrms isolation, 600V off-state voltage, non-zero-crossing, UL approved.","salesMarkdown":"## Triac output without zero-crossing — what it means for phase control The onsemi MOC3053SM is a 1-channel optoisolator with a Triac output, rated for 4170Vrms isolation between the LED input and the output side. The absence of a zero-crossing circuit means the output Triac fires immediately when the LED current exceeds the 6mA max trigger threshold, regardless of the AC line phase angle — this is the right choice for phase-control applications like dimmers or soft-starts where you need to switch on at any point in the cycle, not just near the zero crossing. ## 600V off-state and 1kV/µs dV/dt — guarding against false triggering With a 600V off-state voltage rating and a minimum static dV/dt of 1kV/µs, this part handles the voltage transients common on 240VAC or 277VAC lines without commutating falsely. The 1kV/µs figure is the minimum guaranteed — the actual dV/dt immunity is higher, but design to this floor when sizing snubber networks for inductive loads like motors or solenoids. The hold current is 540µA typical — once the Triac fires, it stays latched until the load current drops below this level near the AC zero crossing. In low-current loads (e.g., a small relay or LED driver), verify the load current exceeds Ih over the full temperature range to prevent the Triac from dropping out mid-cycle. ## Surface-mount 6-SMD Gull Wing — board-level fit The MOC3053SM comes in a 6-SMD Gull Wing package, with a supplier device package designation of 6-SMD. The Gull Wing leads are suitable for reflow soldering; the package footprint matches standard 6-pin DIP SMD land patterns. The 4170Vrms isolation rating demands a minimum creepage distance on the PCB between the input and output pads — typically 8 mm or more depending on the pollution degree, so route the primary-side and secondary-side traces with adequate clearance.","metaTitle":"onsemi MOC3053SM Optoisolator, Triac Output, 6-SMD, 4170Vrms","metaDescription":"onsemi MOC3053SM optoisolator with Triac output, 4170Vrms isolation, 600V off-state, 1kV/µs dV/dt. Active, RoHS3 compliant, UL approved. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Tube","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)":"540µA (Typ)","Voltage - Isolation":"4170Vrms","Voltage - Off State":"600 V","Operating Temperature":"-40°C ~ 85°C","Zero Crossing Circuit":"No","Supplier Device Package":"6-SMD","Voltage - Forward (Vf) (Typ)":"1.18V","Current - DC Forward (If) (Max)":"60 mA","Current - LED Trigger (Ift) (Max)":"6mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.69","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.69000","currency":"USD"},{"qty":10,"price":"$1.06700","currency":"USD"},{"qty":100,"price":"$0.78960","currency":"USD"},{"qty":500,"price":"$0.72560","currency":"USD"},{"qty":1000,"price":"$0.59756","currency":"USD"},{"qty":2000,"price":"$0.56768","currency":"USD"},{"qty":5000,"price":"$0.55487","currency":"USD"},{"qty":10000,"price":"$0.54207","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source to MOC3053SM?","answer":"The closest functional peer is the MOC3073SVM — it shares the same UL approval, 1kV/µs static dV/dt, 1-channel Triac output, 4170Vrms isolation, surface-mount 6-SMD Gull Wing package, and non-zero-crossing design. The key difference is the LED trigger current: MOC3053SM has a 6mA max trigger, while MOC3073SVM has a 6mA max trigger as well (same spec). Both are active parts; the MOC3073SVM can drop into a board laid out for the MOC3053SM without rewiring, provided the trigger current and hold current are within the driver's capability."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/MOC3053SM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/MOC3053SM when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}