{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MOC3033M","brand":"onsemi","brandSlug":"onsemi","productSlug":"MOC3033M","canonicalUrl":"https://icboms.com/onsemi/MOC3033M","factsUrl":"https://icboms.com/api/mcp/products/MOC3033M","rawCanonicalId":null},"summary":{"shortDescription":"onsemi MOC3033M optoisolator, 1-channel Triac output, 4170Vrms isolation, 250 V off-state, zero-crossing circuit, 6-DIP through-hole package, UL approved.","salesMarkdown":"## Triac output with 1 kV/µs dV/dt immunity The onsemi MOC3033M is a 1-channel optoisolator with a Triac output, 4170Vrms isolation, and a 250 V off-state blocking voltage. The 1 kV/µs minimum static dV/dt means the output resists false triggering from line transients — critical when switching inductive loads like solenoids or small motors on a 120 VAC or 240 VAC line. The integrated zero-crossing circuit gates the Triac on only near the AC voltage zero, reducing inrush current and EMI at turn-on. This makes the MOC3033M a natural fit for resistive heater or incandescent lamp loads where soft switching extends contact life. ## Sourcing and peer cross-reference The closest peer in the family is the MOC3073M, which shares the same 1 kV/µs dV/dt, 4170Vrms isolation, and 6-DIP through-hole package, but lacks the zero-crossing circuit.","metaTitle":"onsemi MOC3033M Optoisolator, 250V Triac Output, Zero-Cross","metaDescription":"onsemi MOC3033M optoisolator with Triac output, 4170Vrms isolation, 250V off-state, zero-crossing circuit. UL approved, active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Bulk","Output Type":"Triac","Mounting Type":"Through Hole","Package / Case":"6-DIP (0.300\\\", 7.62mm)","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-DIP","Voltage - Forward (Vf) (Typ)":"1.25V","Current - DC Forward (If) (Max)":"60 mA","Current - LED Trigger (Ift) (Max)":"5mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.36","stockQuantity":14,"priceTiers":[{"qty":628,"price":"$0.48000","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional alternative to MOC3033M?","answer":"The MOC3073M is the closest peer — same 1 kV/µs dV/dt, 4170Vrms isolation, and 6-DIP package. The key difference: the MOC3073M lacks the zero-crossing circuit, so it triggers at any point in the AC cycle rather than near the voltage zero. For zero-cross switching, the MOC3033M is the correct part."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/MOC3033M","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/MOC3033M 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}}