{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MOC3043TVM","brand":"onsemi","brandSlug":"onsemi","productSlug":"MOC3043TVM","canonicalUrl":"https://icboms.com/onsemi/MOC3043TVM","factsUrl":"https://icboms.com/api/mcp/products/MOC3043TVM","rawCanonicalId":null},"summary":{"shortDescription":"onsemi MOC3043TVM optoisolator, triac output, 1-channel, 4170Vrms isolation, 400 V off-state, zero-crossing circuit, 6-DIP through-hole, tube.","salesMarkdown":"## Triac output with zero-crossing — what it means for the load The MOC3043TVM is a 1-channel optoisolator with a triac output and a built-in zero-crossing circuit. The zero-crossing feature means the internal triac only triggers when the AC load voltage is near zero, which reduces inrush current and EMI when switching resistive or lightly inductive loads like heaters, solenoids, or incandescent lamps. Rated for 400 V off-state voltage and a minimum static dV/dt of 1 kV/µs, this part handles the voltage transients common on 240 VAC lines without false triggering — the dV/dt immunity is the key spec for noisy industrial environments. ## Isolation and approvals for panel integration With 4170 Vrms isolation, the MOC3043TVM provides reinforced insulation between the low-voltage control side and the mains-driven triac output — suitable for meeting IEC/EN/DIN and UL safety requirements in equipment that must separate logic and power circuits. ## Trigger current and temperature range The hold current (Ih) is 400 µA typical, so the triac stays latched once triggered until the load current drops below that threshold near the AC zero crossing.","metaTitle":"onsemi MOC3043TVM Optoisolator, Triac Output, Zero-Cross","metaDescription":"onsemi MOC3043TVM optoisolator with triac output, 4170Vrms isolation, zero-crossing circuit, 400V off-state, 1kV/µs dV/dt. 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","Mounting Type":"Through Hole","Package / Case":"6-DIP (0.400\\\", 10.16mm)","Approval Agency":"IEC/EN/DIN, 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":"400 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":"$1.43","stockQuantity":15,"priceTiers":[{"qty":1,"price":"$1.43000","currency":"USD"},{"qty":10,"price":"$0.90300","currency":"USD"},{"qty":100,"price":"$0.66850","currency":"USD"},{"qty":500,"price":"$0.61434","currency":"USD"},{"qty":1000,"price":"$0.50593","currency":"USD"},{"qty":2000,"price":"$0.48064","currency":"USD"},{"qty":5000,"price":"$0.46979","currency":"USD"},{"qty":10000,"price":"$0.45895","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source to MOC3043TVM?","answer":"The MOC3073M is a triac-output optoisolator in the same 6-DIP through-hole package with the same 4170 Vrms isolation and 1 kV/µs dV/dt rating, but it lacks the zero-crossing circuit. If your design requires zero-cross switching, the MOC3043TVM is the correct choice; the MOC3073M triggers at any phase angle."},{"question":"What compliance documentation does onsemi provide for MOC3043TVM?","answer":"The MOC3043TVM is ROHS3 compliant and carries approvals from IEC/EN/DIN and UL. onsemi provides a datasheet with full specifications, and RoHS/REACH certificates are available from the manufacturer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/MOC3043TVM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/MOC3043TVM 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}}