{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FOD3125SD","brand":"onsemi","brandSlug":"onsemi","productSlug":"FOD3125SD","canonicalUrl":"https://icboms.com/onsemi/FOD3125SD","factsUrl":"https://icboms.com/api/mcp/products/FOD3125SD","rawCanonicalId":null},"summary":{"shortDescription":"onsemi OPTOPLANAR® series, single-channel gate drive optocoupler, 5000Vrms isolation, 3A peak output, 8-SMD Gull Wing package, -40°C to 125°C operating range.","salesMarkdown":"## 5000Vrms isolation for motor-drive gate drive The FOD3125SD from onsemi is a single-channel gate drive optocoupler in the OPTOPLANAR® series, built for driving IGBTs and MOSFETs in motor drives, inverters, and industrial power supplies. Its 5000Vrms isolation covers reinforced insulation requirements for mains-connected equipment, while the 3A peak output current directly drives medium-power gates without an external buffer stage. ## Active production, surface-mount package It ships in Tape & Reel or Cut Tape in an 8-SMD Gull Wing package for surface-mount assembly. The operating temperature range is -40°C to 125°C, covering industrial and outdoor enclosures. ROHS3 compliant. ## Supply rail and forward current limits The output supply voltage range is 15V to 30V, which matches typical IGBT gate drive rails (15V on, -5V to -8V off). The high/low output current is 2A each — enough for gate charges up to several microcoulombs. The LED forward voltage is 1.5V typical, with a maximum forward current of 25 mA. Keep the LED drive current within that limit to avoid degrading the optical coupling over time.","metaTitle":"FOD3125SD onsemi OPTOPLANAR® Gate Drive Optocoupler","metaDescription":"onsemi FOD3125SD gate drive optocoupler, 5000Vrms isolation, 3A peak output, 35kV/µs CMTI, -40°C to 125°C. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"OPTOPLANAR®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Series":"OPTOPLANAR®","Package":"Tape & Reel (TR); Cut Tape (CT)","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":"$3.88","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.88000","currency":"USD"},{"qty":10,"price":"$2.74500","currency":"USD"},{"qty":100,"price":"$2.24790","currency":"USD"},{"qty":500,"price":"$1.89506","currency":"USD"},{"qty":1000,"price":"$1.73823","currency":"USD"},{"qty":2000,"price":"$1.66635","currency":"USD"},{"qty":5000,"price":"$1.63368","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e48766944375c63dcb075aba9e91240f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is FOD3125SD RoHS compliant?","answer":"Yes, it is ROHS3 compliant."},{"question":"What is a direct replacement for FOD3125SD?","answer":"The FOD3125S is the closest functional sibling in the same OPTOPLANAR® series — same 5000Vrms isolation, same 3A peak output, same 60ns rise/fall, same 400ns propagation delay, same 35kV/µs CMTI. The primary difference is package: the FOD3125S ships in bulk, while the FOD3125SD comes in Tape & Reel or Cut Tape for surface-mount assembly. Both are active and UL approved."},{"question":"What is the typical application for FOD3125SD?","answer":"Motor-drive IGBT/MOSFET gate drive, inverter power stages, industrial power supplies, and any isolated switch driving where 5000Vrms isolation and 3A peak output are needed. The 35kV/µs CMTI makes it suitable for high-dV/dt switching environments like half-bridge and three-phase inverter legs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/FOD3125SD","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/FOD3125SD when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:07:02.123Z","lastPublished":"2026-07-17T20:07:02.123Z","indexable":true}}