{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"IRLZ44Z","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"IRLZ44Z","canonicalUrl":"https://icboms.com/infineon/IRLZ44Z","factsUrl":"https://icboms.com/api/mcp/products/IRLZ44Z","rawCanonicalId":null},"summary":{"shortDescription":"IRLZ44Z, Infineon HEXFET® N-Channel MOSFET, 55 V drain-source voltage, 51 A continuous drain current, 13.5 mOhm max on-resistance at 10 V gate drive, logic-level gate threshold (4.5 V drive), TO-220-3 through-hole package.","salesMarkdown":"## Gate drive and switching behaviour — the logic-level advantage The drive voltage range is specified from 4.5 V (minimum for the lowest Rds(on)) to 10 V (where the 13.5 mOhm figure is guaranteed). The maximum gate threshold is 3 V at 250 µA drain current, which means a 3.3 V logic output can reliably turn the FET on, though the on-resistance will be higher than the 10 V rating. Gate charge is 36 nC at 5 V Vgs, and input capacitance is 1620 pF at 25 V Vds — moderate numbers that keep switching losses manageable in the 10 kHz to 100 kHz range. For a 3.3 V driven design, verify the actual Rds(on) at 3.3 V Vgs from the typical curves; the 4.5 V minimum drive spec is a safe starting point. ## Package and mounting — TO-220-3 through-hole Housed in a standard TO-220-3 (TO-220AB) through-hole package, the IRLZ44Z is intended for PCB mounting with the metal tab either soldered to a copper plane or bolted to a heatsink. The tab is electrically connected to the drain. Maximum power dissipation is 80 W at case temperature, so a heatsink is required for any continuous current above a few amps. The through-hole format suits prototyping, rework, and designs where vibration resistance is less critical than thermal mass. ## Lifecycle status — obsolete, sourced to order For new designs, a current-production logic-level N-channel MOSFET in TO-220 with similar voltage and current ratings should be selected.","metaTitle":"IRLZ44Z N-Channel MOSFET, 55V 51A, TO-220-3","metaDescription":"IRLZ44Z N-Channel HEXFET MOSFET, 55V Vdss, 51A Id, 13.5mOhm Rds(on) at 10V. Logic-level drive (4.5V). TO-220-3. 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":"Tube","FET Type":"N-Channel","Vgs (Max)":"±16V","Technology":"MOSFET (Metal Oxide)","FET Feature":"-","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"3V @ 250µA","Operating Temperature":"-55°C ~ 175°C (TJ)","Rds On (Max) @ Id, Vgs":"13.5mOhm @ 31A, 10V","Power Dissipation (Max)":"80W (Tc)","Supplier Device Package":"TO-220AB","Gate Charge (Qg) (Max) @ Vgs":"36 nC @ 5 V","Drain to Source Voltage (Vdss)":"55 V","Input Capacitance (Ciss) (Max) @ Vds":"1620 pF @ 25 V","Drive Voltage (Max Rds On, Min Rds On)":"4.5V, 10V","Current - Continuous Drain (Id) @ 25°C":"51A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.0700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8b115a363070061375a79c3374690212.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can I use IRLZ44Z with 3.3V logic?","answer":"Yes, the IRLZ44Z is a logic-level FET with a maximum gate threshold of 3 V at 250 µA, so a 3.3 V logic output can turn it on. However, the on-resistance at 3.3 V Vgs will be higher than the 13.5 mOhm rating at 10 V — check the typical transfer curves in the datasheet for the actual Rds(on) at your gate voltage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/IRLZ44Z","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/IRLZ44Z 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}}