{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FOD3125S","brand":"onsemi","brandSlug":"onsemi","productSlug":"FOD3125S","canonicalUrl":"https://icboms.com/onsemi/FOD3125S","factsUrl":"https://icboms.com/api/mcp/products/FOD3125S","rawCanonicalId":null},"summary":{"shortDescription":"onsemi OPTOPLANAR® gate drive optocoupler, FOD3125S, 1-channel, 5000Vrms isolation, 3A peak output, 8-SMD Gull Wing, surface mount.","salesMarkdown":"## Gate drive optocoupler with 3 A peak output The onsemi FOD3125S is a single-channel gate drive optocoupler from the OPTOPLANAR® series, designed to drive IGBTs and power MOSFETs in inverter and motor drive stages. Its 3 A peak output current directly charges the gate capacitance for fast switching without an external booster stage. With 5000 Vrms isolation and a common-mode transient immunity of 35 kV/µs minimum, this part maintains signal integrity across the isolation barrier in noisy industrial environments — a key spec for motor-drive and UPS designs where high dv/dt transients couple across the barrier. ## Switching speed and timing margins Propagation delay is 400 ns max for both tpLH and tpHL, with a pulse-width distortion ceiling of 100 ns. The 60 ns typical rise and fall times keep dead-time margins tight in half-bridge topologies — the 400 ns delay sets the minimum dead-time floor the controller must respect. The output supply range spans 15 V to 30 V, covering standard gate-drive rails for IGBTs (15 V on) and accommodating higher-voltage MOSFETs. The 1.5 V typical forward voltage and 25 mA max forward current keep the LED drive within a standard microcontroller GPIO's sink capability through a series resistor. Housed in an 8-SMD Gull Wing package with a surface-mount footprint, the FOD3125S mates with standard 8-SMD land patterns. The 8 mm creepage distance typical for this package supports the 5000 Vrms isolation rating in a two-layer PCB layout — the clearance under the component body is the limiting factor, not the pin spacing. The bulk packaging is suited for prototype builds and low-volume production; tape-and-reel options are available through the supply chain.","metaTitle":"onsemi FOD3125S Optoisolator, 3A Gate Driver, 5kV","metaDescription":"onsemi FOD3125S OPTOPLANAR® gate drive optocoupler, 3A peak output, 5000Vrms isolation, 35kV/µs CMTI. Active, ROHS3. Available to order.","metaKeywords":null},"attributes":{"series":"OPTOPLANAR®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Series":"OPTOPLANAR®","Package":"Bulk","Technology":"Optical Coupling","Mounting Type":"Surface Mount","Package / Case":"8-SMD, Gull Wing","Approval Agency":"UL","lifecycle_stage":"eol_hot","Number of Channels":"1","Voltage - Isolation":"5000Vrms","Current - Peak Output":"3A","Operating Temperature":"-40°C ~ 125°C","Rise / Fall Time (Typ)":"60ns, 60ns","Supplier Device Package":"8-SMD","Voltage - Output Supply":"15V ~ 30V","Current - Output High, Low":"2A, 2A","Pulse Width Distortion (Max)":"100ns","Voltage - Forward (Vf) (Typ)":"1.5V","Current - DC Forward (If) (Max)":"25 mA","Propagation Delay tpLH / tpHL (Max)":"400ns, 400ns","Common Mode Transient Immunity (Min)":"35kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.85","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.85000","currency":"USD"},{"qty":10,"price":"$3.43200","currency":"USD"},{"qty":100,"price":"$2.81060","currency":"USD"},{"qty":500,"price":"$2.36942","currency":"USD"},{"qty":1000,"price":"$2.17333","currency":"USD"},{"qty":2000,"price":"$2.08345","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e48766944375c63dcb075aba9e91240f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How do I get current pricing and availability for FOD3125S?","answer":"Submit an RFQ through this listing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/FOD3125S","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/FOD3125S 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}}