{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MOC3042TVM","brand":"onsemi","brandSlug":"onsemi","productSlug":"MOC3042TVM","canonicalUrl":"https://icboms.com/onsemi/MOC3042TVM","factsUrl":"https://icboms.com/api/mcp/products/MOC3042TVM","rawCanonicalId":null},"summary":{"shortDescription":"onsemi MOC3042TVM optoisolator, triac output, 1-channel, 4170Vrms isolation, 400V off-state, zero-crossing circuit, 6-DIP through-hole, tube.","salesMarkdown":"## Zero-crossing triac driver for resistive and inductive loads The MOC3042TVM is a 1-channel optoisolator with a triac output and a built-in zero-crossing detection circuit, rated for 400 V off-state and 4170 Vrms isolation. The zero-crossing circuit fires the internal triac only near the AC mains zero voltage, which minimises inrush current when switching resistive loads like heaters or incandescent lamps and reduces EMI from inductive loads such as small motors or solenoids. The 1 kV/µs minimum static dV/dt rating provides noise immunity against fast transients on the AC line, keeping the output triac from false-triggering on line noise or switching spikes. ## Package and board-fit for rework and retrofit Housed in a 6-DIP through-hole package with 0.400-inch (10.16 mm) body width, the MOC3042TVM drops into the same footprint as standard DIP-6 optoisolators. The through-hole leads are rework-friendly under a soldering iron or hot-air station — no paste stencil needed, and the package body is large enough to read the pin-1 dot without magnification. The tube packaging (50 per tube typical for this DIP size) suits both prototype hand-stuffing and medium-volume wave-solder runs.","metaTitle":"onsemi MOC3042TVM Optoisolator, Triac Output, 400V Off-State","metaDescription":"onsemi MOC3042TVM optoisolator with triac output, 4170Vrms isolation, zero-crossing circuit, 400V off-state, 1kV/µs dV/dt. Active, RoHS3, UL. 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":"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)":"10mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.81","stockQuantity":30,"priceTiers":[{"qty":1,"price":"$1.81000","currency":"USD"},{"qty":10,"price":"$1.14700","currency":"USD"},{"qty":100,"price":"$0.84870","currency":"USD"},{"qty":500,"price":"$0.77986","currency":"USD"},{"qty":1000,"price":"$0.64224","currency":"USD"},{"qty":2000,"price":"$0.61013","currency":"USD"},{"qty":5000,"price":"$0.59636","currency":"USD"},{"qty":10000,"price":"$0.58260","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between MOC3042TVM and MOC3073M?","answer":"The key difference is the zero-crossing circuit: MOC3042TVM includes it, while MOC3073M does not. Both are 1-channel triac output optoisolators in a 6-DIP through-hole package with 4170 Vrms isolation and 1 kV/µs dV/dt. The MOC3073M triggers on any phase angle, so it is better suited for phase-control applications like dimmers, whereas the MOC3042TVM is preferred for on/off switching of resistive or lightly inductive loads to reduce inrush."},{"question":"What compliance documentation does onsemi provide for MOC3042TVM?","answer":"Onsemi provides RoHS3 compliance certification and UL recognition plus IEC/EN/DIN approvals. These cover the safety isolation and environmental requirements for industrial and commercial equipment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/MOC3042TVM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/MOC3042TVM 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}}