{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FOD8343T","brand":"onsemi","brandSlug":"onsemi","productSlug":"FOD8343T","canonicalUrl":"https://icboms.com/onsemi/FOD8343T","factsUrl":"https://icboms.com/api/mcp/products/FOD8343T","rawCanonicalId":null},"summary":{"shortDescription":"onsemi FOD8343T, single-channel optical coupling gate driver, 5000 Vrms isolation, 4 A peak output, 6-SOP tube package, -40°C to 100°C","salesMarkdown":"## Gate-drive isolation for industrial power stages The FOD8343T is a single-channel optoisolated gate driver from onsemi, built for driving IGBTs and power MOSFETs in industrial motor drives, uninterruptible power supplies, and switch-mode power converters. Its 5000 Vrms isolation rating provides the reinforced safety barrier required between the low-voltage controller side and the high-voltage power stage. With a 4 A peak output current and symmetrical 3 A source/sink capability, it can directly drive the gate of medium-power IGBTs up to the 50 A class without an external booster stage — saving board space and BOM cost. The 50 kV/µs common-mode transient immunity ensures the output stays clean when the power-stage voltage swings at hundreds of volts per microsecond — a common failure point in half-bridge and full-bridge topologies. ## Switching speed and timing margin Typical rise and fall times of 38 ns and 24 ns keep switching losses low, while a maximum propagation delay of 210 ns and pulse-width distortion of 65 ns give the control loop predictable timing — important for dead-time management in bridge circuits. The 10 V to 30 V output supply range matches the gate drive voltage of standard IGBTs and MOSFETs, and the 1.5 V typical forward voltage with 25 mA max forward current keeps the LED drive within standard microcontroller GPIO capability. ## Active production — no obsolescence concern The tube package is the standard through-hole compatible format for manual assembly or low-volume production; for reel-fed pick-and-place, the FOD8343TR2 variant is the tape-and-reel equivalent. ## Package and footprint fit Housed in a 6-SOIC (0.268\", 6.80 mm width) surface-mount package with a 6-SOP supplier device package designation, the FOD8343T occupies a compact footprint on the PCB. The 6-pin SOIC layout is a common industry standard, simplifying layout reuse across multiple gate-driver designs. The -40°C to 100°C operating temperature range covers industrial environments — motor drive cabinets, solar inverters, and factory-floor power supplies — where ambient temperatures can reach 70°C with additional self-heating from adjacent power components.","metaTitle":"FOD8343T onsemi Optoisolator Gate Driver – 5 kVrms, 4 A Peak","metaDescription":"onsemi FOD8343T optoisolator gate driver: 5000 Vrms isolation, 4 A peak output, 50 kV/µs CMTI. Active lifecycle, tube package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Tube","Technology":"Optical Coupling","Mounting Type":"Surface Mount","Package / Case":"6-SOIC (0.268\\\", 6.80mm Width)","Approval Agency":"UR","lifecycle_stage":"eol_hot","Number of Channels":"1","Voltage - Isolation":"5000Vrms","Current - Peak Output":"4A","Operating Temperature":"-40°C ~ 100°C","Rise / Fall Time (Typ)":"38ns, 24ns","Supplier Device Package":"6-SOP","Voltage - Output Supply":"10V ~ 30V","Current - Output High, Low":"3A, 3A","Pulse Width Distortion (Max)":"65ns","Voltage - Forward (Vf) (Typ)":"1.5V","Current - DC Forward (If) (Max)":"25 mA","Propagation Delay tpLH / tpHL (Max)":"210ns, 210ns","Common Mode Transient Immunity (Min)":"50kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.14","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.14000","currency":"USD"},{"qty":10,"price":"$2.21900","currency":"USD"},{"qty":100,"price":"$1.81710","currency":"USD"},{"qty":500,"price":"$1.53186","currency":"USD"},{"qty":1000,"price":"$1.40509","currency":"USD"},{"qty":2000,"price":"$1.34699","currency":"USD"},{"qty":5000,"price":"$1.32058","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a3f1ba66b558ccd606a53ea52771cbde.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the differences between FOD8343T and FOD8342?","answer":"The FOD8343T offers a 4 A peak output and 50 kV/µs CMTI, while the FOD8342 is rated for 3 A peak output and 20 kV/µs CMTI. For driving larger IGBTs or operating in higher dV/dt environments, the FOD8343T provides additional margin."},{"question":"Can FOD8343T drive an IGBT directly?","answer":"Yes. The 4 A peak output and 3 A source/sink capability are sufficient to drive medium-power IGBTs up to approximately 50 A class without an external buffer stage, provided the gate charge and switching frequency stay within the thermal budget."},{"question":"What is the closest functional second-source to FOD8343T?","answer":"The FOD8343TR2 is the tape-and-reel packaging variant of the same die, electrically identical. For a different pin-compatible option, the FOD8343 shares the same 4 A peak output and 50 kV/µs CMTI but comes in tube packaging."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/FOD8343T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/FOD8343T 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}}