{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MOC3073M","brand":"onsemi","brandSlug":"onsemi","productSlug":"MOC3073M","canonicalUrl":"https://icboms.com/onsemi/MOC3073M","factsUrl":"https://icboms.com/api/mcp/products/MOC3073M","rawCanonicalId":null},"summary":{"shortDescription":"onsemi MOC3073M, a 1-channel random-phase triac optoisolator, 800 V off-state, 4170 Vrms isolation, 1 kV/µs min static dV/dt, through-hole 6-DIP package, UL recognized, active production.","salesMarkdown":"The MOC3073M is a random-phase triac optoisolator from onsemi, designed to drive high-voltage triacs or directly switch AC loads in industrial and appliance controls. Its 800 V off-state voltage gives headroom for 240 VAC or 480 VAC line applications, while the minimum static dV/dt of 1 kV/µs prevents false turn-on from line transients or inductive load switching — a common failure point in motor and solenoid drives. ## Isolation barrier and UL recognition — safety for mains-referenced circuits With 4170 Vrms isolation and UL agency approval, this part meets reinforced insulation requirements for separating low-voltage control logic from hazardous mains voltage. The 1.18 V typical forward voltage and 6 mA maximum LED trigger current allow direct drive from 3.3 V or 5 V logic outputs through a series resistor, keeping the BOM simple.","metaTitle":"onsemi MOC3073M Optoisolator – 800V Triac Output, 4170Vrms","metaDescription":"onsemi MOC3073M random-phase triac optoisolator. 800V off-state, 1kV/µs dV/dt, 4170Vrms isolation, UL recognized. Active production, through-hole 6-DIP.","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 (0.300\\\", 7.62mm)","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":"800 V","Operating Temperature":"-40°C ~ 85°C","Zero Crossing Circuit":"No","Supplier Device Package":"6-PDIP","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":"$1.68","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.77000","currency":"USD"},{"qty":10,"price":"$1.11900","currency":"USD"},{"qty":100,"price":"$0.82790","currency":"USD"},{"qty":500,"price":"$0.76080","currency":"USD"},{"qty":1000,"price":"$0.62654","currency":"USD"},{"qty":2000,"price":"$0.59522","currency":"USD"},{"qty":5000,"price":"$0.58179","currency":"USD"},{"qty":10000,"price":"$0.56837","currency":"USD"},{"qty":25000,"price":"$0.56153","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a46db98a3628ad225aee84d44c37cec1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between MOC3073M and MOC3083M?","answer":"The MOC3083M includes a zero-crossing circuit, while the MOC3073M does not. The MOC3073M is a random-phase device, meaning it turns on immediately when triggered, regardless of the AC line voltage phase — suitable for phase-angle control or solid-state relay applications where switching at any point in the cycle is needed."},{"question":"When sourcing MOC3073M, what is the closest functional second-source?","answer":"The MOC3073SVM is a surface-mount variant with the same electrical ratings — 800 V off-state, 1 kV/µs dV/dt, 4170 Vrms isolation — but in a surface-mount package. For a through-hole replacement, the MOC3020M offers a 400 V off-state rating and 30 mA LED trigger current, which is a different voltage class and trigger threshold, so verify the BOM position before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/MOC3073M","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/MOC3073M when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}