{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"IRLZ44NSTRRPBF","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"IRLZ44NSTRRPBF","canonicalUrl":"https://icboms.com/infineon/IRLZ44NSTRRPBF","factsUrl":"https://icboms.com/api/mcp/products/IRLZ44NSTRRPBF","rawCanonicalId":null},"summary":{"shortDescription":"Infineon HEXFET® N-Channel MOSFET, IRLZ44NSTRRPBF, 55 V drain, 47 A continuous, 22 mΩ Rds(on) at 10 V, D2PAK surface mount, -55°C to 175°C.","salesMarkdown":"## 55 V, 47 A, 22 mΩ — what these ratings mean for your power rail The 1700 pF input capacitance at 25 V drain bias is moderate; the gate driver sees a 48 nC total gate charge at 5 V, so a 1 A gate driver switches it in under 50 ns. ## D2PAK package — thermal and layout considerations The part comes in a TO-263-3 / D²Pak surface-mount package (2 leads plus tab, TO-263AB). The datasheet quotes 3.8 W dissipation at 25°C ambient (still air) and 110 W at the case — the real number depends on your board's copper thickness, via stitching to an internal plane, and airflow. For continuous 47 A, a 2 oz copper pour of at least 6 cm² per side is a starting point; anything less and the junction will climb past 175°C. Operating junction temperature range is -55°C to 175°C, so it handles engine-bay heat or cold-soak without derating the voltage or current — just watch the Rds(on) increase of about 0.5% per °C above 25°C. At 125°C junction, the 22 mΩ spec roughly doubles to 44 mΩ, which doubles the conduction loss for the same current. Infineon lists the IRLZ44NSTRRPBF as obsolete. That means this part is no longer in production; any new stock comes from surplus, broker, or last-time-buy inventory.","metaTitle":"IRLZ44NSTRRPBF N-Channel MOSFET, 55V 47A D2PAK, Obsolete","metaDescription":"IRLZ44NSTRRPBF N-Channel HEXFET MOSFET, 55V drain, 47A continuous, 22mΩ Rds(on) at 10V. D2PAK surface mount. Request quote.","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)":"±16V","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":"2V @ 250µA","Operating Temperature":"-55°C~175°C(TJ)","Rds On (Max) @ Id, Vgs":"22mOhm @ 25A, 10V","Power Dissipation (Max)":"3.8W (Ta), 110W (Tc)","Supplier Device Package":"D2PAK","Gate Charge (Qg) (Max) @ Vgs":"48 nC @ 5 V","Drain to Source Voltage (Vdss)":"55 V","Input Capacitance (Ciss) (Max) @ Vds":"1700 pF @ 25 V","Drive Voltage (Max Rds On, Min Rds On)":"4V, 10V","Current - Continuous Drain (Id) @ 25°C":"47A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3900","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/9f5ac89aa50c6591bd055ed3089bffdf.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is IRLZ44NSTRRPBF obsolete?","answer":"Yes, Infineon lists the IRLZ44NSTRRPBF as obsolete. It is no longer in production. For new designs, consider an active alternative with similar 55 V / 47 A / 22 mΩ ratings in a D2PAK package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/IRLZ44NSTRRPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/IRLZ44NSTRRPBF 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}}