{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FOD4118TV","brand":"onsemi","brandSlug":"onsemi","productSlug":"FOD4118TV","canonicalUrl":"https://icboms.com/onsemi/FOD4118TV","factsUrl":"https://icboms.com/api/mcp/products/FOD4118TV","rawCanonicalId":null},"summary":{"shortDescription":"onsemi FOD4118TV optoisolator, triac output, 1-channel, 5000 Vrms isolation, 800 V off-state, zero-crossing, 10 kV/µs dV/dt, through-hole DIP-6, bulk.","salesMarkdown":"## Triac output with zero-crossing — clean AC switching The FOD4118TV is a 1-channel optoisolator with a triac output and built-in zero-crossing circuit, rated for 5000 Vrms isolation and 800 V off-state voltage. That 800 V off-state means it handles 240 VAC and 277 VAC line voltages with plenty of headroom, and even 480 VAC line-to-line in some designs — just watch the peak voltage. The zero-crossing circuit fires the triac only near the AC zero point, which cuts inrush current and radiated EMI when switching resistive loads like heaters or incandescent lamps. ## 10 kV/µs dV/dt — false-trigger immunity in noisy plants A static dV/dt rating of 10 kV/µs means the output triac won't falsely trigger from fast voltage spikes on the AC line — common in motor-drive cabinets or near welding equipment. Many older triac-output optos (like the MOC3073M) only offer 1 kV/µs, so this part is a step up for industrial environments where line noise is a given. The 60 µs turn-on time is fine for line-frequency switching (50/60 Hz) but not for high-speed PWM — keep that in mind if you are thinking about dimming or phase-angle control. ## Through-hole DIP-6 — field-swappable, no reflow needed Housed in a 6-DIP package with 0.400-inch (10.16 mm) body width, the FOD4118TV uses standard 0.1-inch pin spacing. That is a socket-friendly footprint — you can swap it on site with a basic soldering iron or even use a DIP socket for field replacement. No hot-air station, no reflow profile. Bulk packaging means it ships in tubes, not tape-and-reel, which is typical for through-hole parts and fine for prototype or low-volume builds.","metaTitle":"onsemi FOD4118TV Optoisolator, Triac Output, 5kV, DIP-6","metaDescription":"onsemi FOD4118TV optoisolator with triac output, 5000 Vrms isolation, 800 V off-state, zero-crossing, 10 kV/µs dV/dt. Active production, RoHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Bulk","Output Type":"Triac","Turn On Time":"60µs","Mounting Type":"Through Hole","Package / Case":"6-DIP (0.400\\\", 10.16mm)","Approval Agency":"CSA, UL, VDE","lifecycle_stage":"eol_hot","Number of Channels":"1","Static dV/dt (Min)":"10kV/µs","Current - Hold (Ih)":"500µA","Voltage - Isolation":"5000Vrms","Voltage - Off State":"800 V","Operating Temperature":"-55°C ~ 100°C","Zero Crossing Circuit":"Yes","Supplier Device Package":"6-DIP","Voltage - Forward (Vf) (Typ)":"1.25V","Current - DC Forward (If) (Max)":"30 mA","Current - LED Trigger (Ift) (Max)":"1.3mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.2","stockQuantity":22,"priceTiers":[{"qty":1,"price":"$4.20000","currency":"USD"},{"qty":10,"price":"$2.96900","currency":"USD"},{"qty":100,"price":"$2.43210","currency":"USD"},{"qty":500,"price":"$2.05030","currency":"USD"},{"qty":1000,"price":"$1.88062","currency":"USD"},{"qty":2000,"price":"$1.80285","currency":"USD"},{"qty":5000,"price":"$1.76750","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/49cf8eca9dd44957a150c4b466b221d4.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the FOD4118TV a drop-in replacement for the MOC3073M?","answer":"Not directly. The MOC3073M lacks a zero-crossing circuit and has a much lower static dV/dt (1 kV/µs vs 10 kV/µs), so it will false-trigger in noisy environments where the FOD4118TV will not. Both are 1-channel triac-output optos in through-hole DIP packages, but the MOC3073M is rated for 4170 Vrms isolation and a narrower temperature range (-40°C to 85°C vs -55°C to 100°C). If the original design relied on zero-crossing or needed high dV/dt immunity, the FOD4118TV is an upgrade — but check the pinout and PCB clearance for the slightly wider DIP body."},{"question":"What compliance documentation does onsemi provide for the FOD4118TV?","answer":"onsemi provides RoHS3 compliance (no exemptions) and safety certifications from CSA, UL, and VDE. The 5000 Vrms isolation rating is backed by these agency approvals, which cover reinforced insulation requirements for mains-connected equipment in North America and Europe."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/FOD4118TV","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/FOD4118TV 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}}