{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"IRFZ34NSTRR","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"IRFZ34NSTRR","canonicalUrl":"https://icboms.com/infineon/IRFZ34NSTRR","factsUrl":"https://icboms.com/api/mcp/products/IRFZ34NSTRR","rawCanonicalId":null},"summary":{"shortDescription":"Infineon HEXFET® IRFZ34NSTRR N-Channel MOSFET, 55V Vdss, 29A Id, 40mOhm Rds(on) @ 10V, D2PAK (TO-263) surface mount, -55°C to 175°C.","salesMarkdown":"The IRFZ34NSTRR: The D2PAK (TO-263) surface-mount package with exposed tab is sized for power-dissipation applications up to 68 W when the tab is soldered to a copper plane. ## Rds(on) and gate drive — what the 10 V spec means for your design ## Package and thermal management in the D2PAK The TO-263-3 (D2PAK) package is a surface-mount power package with a large exposed metal tab on the bottom. The 3.8 W rating at ambient (still air) is a no-heatsink reference — real designs must use the tab as the primary thermal path. The D2PAK footprint is the same as the through-hole TO-220 in terms of die size, making this a direct surface-mount alternative for designs that originally used a TO-220 part. ## Obsolete — sourcing reality for IRFZ34NSTRR Sourcing this part now relies on the surplus and broker market — factory overruns, end-of-life buy leftovers, and inventory from independent distributors. When evaluating surplus lots, check the date-code spread and packaging condition — sealed factory reels with consistent date-codes from a single production run are the preferred sourcing grade. ## Second-source and replacement considerations The through-hole sibling IRFZ34N (TO-220 package) shares the same die and electrical ratings but differs in mounting. For a surface-mount replacement, the closest functional match would be a current-production N-channel MOSFET in D2PAK with similar voltage, current, and on-resistance ratings from Infineon's current HEXFET portfolio or from competitors such as Vishay, ON Semiconductor, or STMicroelectronics. A parametric search for 55-60 V, 25-30 A, <50 mOhm Rds(on) in D2PAK is the practical cross-reference approach.","metaTitle":"IRFZ34NSTRR N-Channel MOSFET, 55V 29A HEXFET, D2PAK","metaDescription":"Infineon IRFZ34NSTRR N-channel HEXFET MOSFET, 55V Vdss, 29A Id, 40mOhm Rds(on). Obsolete. D2PAK surface mount.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Infineon Technologies","Series":"HEXFET®","Package":"Tape & Reel (TR)","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":"Can I use IRFZ34N instead of IRFZ34NSTRR?","answer":"The IRFZ34N (TO-220 through-hole) uses the same die and has identical electrical ratings (55 V, 29 A, 40 mOhm) as the IRFZ34NSTRR. It is a functional replacement if the board layout can accommodate a through-hole package instead of the surface-mount D2PAK. The IRFZ34N is also obsolete."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/IRFZ34NSTRR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/IRFZ34NSTRR 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}}