{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"IRFZ34NS","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"IRFZ34NS","canonicalUrl":"https://icboms.com/infineon/IRFZ34NS","factsUrl":"https://icboms.com/api/mcp/products/IRFZ34NS","rawCanonicalId":null},"summary":{"shortDescription":"IRFZ34NS, International Rectifier HEXFET N-Channel MOSFET, 55V Vdss, 29A Id, 40mΩ Rds(on) @ 10V Vgs, D2PAK (TO-263) surface-mount, -55°C to 175°C.","salesMarkdown":"## What the 40 mΩ Rds(on) means for your switching design At 16 A the Rds(on) is guaranteed to stay under that ceiling; the 34 nC typical gate charge at 10 V tells you the gate-driver needs to push about 34 nC per switching cycle, which is moderate for a D2PAK device and keeps the transition losses manageable in a 50–100 kHz converter. ## D2PAK footprint and thermal reality The part comes in a D2PAK (TO-263) surface-mount package with the drain tab as the exposed pad. The 3.8 W at ambient (Ta) number is for a free-air board with minimal copper — a realistic derating guide if the layout is cramped. ## Obsolete — the sourcing picture International Rectifier lists the IRFZ34NS as Obsolete. If a pin-compatible replacement is acceptable, the IRFZ44N is a common cross-shop candidate but its package (TO-220 through-hole) differs, so the board would need a layout change. No surface-mount equivalent is officially documented.","metaTitle":"IRFZ34NS N-Channel MOSFET, 55V 29A D2PAK","metaDescription":"IRFZ34NS HEXFET N-channel MOSFET, 55V Vdss, 29A Id, 40mΩ Rds(on) at 10V. D2PAK surface-mount package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Infineon Technologies","Series":"HEXFET®","Package":"Tube","FET Type":"N-Channel","Vgs (Max)":"±20V","Technology":"MOSFET (Metal Oxide)","FET Feature":"-","Mounting Type":"Surface Mount","Package / Case":"TO-263-3, D²Pak (2 Leads + Tab), TO-263AB","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"4V @ 250µA","Operating Temperature":"-55°C ~ 175°C (TJ)","Rds On (Max) @ Id, Vgs":"40mOhm @ 16A, 10V","Power Dissipation (Max)":"3.8W (Ta), 68W (Tc)","Supplier Device Package":"D2PAK","Gate Charge (Qg) (Max) @ Vgs":"34 nC @ 10 V","Drain to Source Voltage (Vdss)":"55 V","Input Capacitance (Ciss) (Max) @ Vds":"700 pF @ 25 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"29A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4bfc206c1bbaaf70a9cfc82be2077d58.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the Rds(on) of IRFZ34NS at 10V Vgs?","answer":"The maximum Rds(on) is 40 mΩ at 16 A drain current with 10 V gate drive."},{"question":"What package does IRFZ34NS come in?","answer":"The IRFZ34NS comes in a D2PAK (TO-263) surface-mount package, specifically the TO-263-3, D²Pak (2 Leads + Tab), TO-263AB variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/IRFZ34NS","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/IRFZ34NS 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}}