{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"IRLZ44NPBF","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"IRLZ44NPBF","canonicalUrl":"https://icboms.com/infineon/IRLZ44NPBF","factsUrl":"https://icboms.com/api/mcp/products/IRLZ44NPBF","rawCanonicalId":null},"summary":{"shortDescription":"IRLZ44NPBF, HEXFET series, N-channel logic-level MOSFET, 55V Vdss, 47A Id, 22mOhm Rds(on) at 10V, 48nC Qg, TO-220AB package, -55°C to 175°C.","salesMarkdown":"The logic-level gate threshold (2 V max at 250 µA) lets a 5 V microcontroller or FPGA drive it directly through a gate resistor — no separate driver IC needed for moderate switching frequencies. ## On-resistance and gate charge — sizing the driver and the thermal budget At 47 A the conduction loss is I²R = 47² × 0.022 ≈ 48.6 W — well within the 110 W case-temperature power dissipation rating, but the junction-to-case thermal path demands a heatsink with adequate surface area and airflow. The total gate charge of 48 nC at 5 V means a 5 V gate driver sourcing 1 A can switch the gate in about 48 ns; a 100 mA source stretches it to 480 ns. Match the drive current to the target switching frequency to keep switching losses under control. ## Temperature range and package — where this TO-220AB fits The TO-220AB through-hole package — three leads, metal tab — bolts directly to a chassis or heatsink with a single M3 screw. The exposed drain tab is electrically live; an insulating pad or thermal compound is needed if the heatsink is grounded.","metaTitle":"IRLZ44NPBF HEXFET N-Channel MOSFET, 55V 47A, TO-220AB","metaDescription":"IRLZ44NPBF N-channel logic-level HEXFET MOSFET, 55V drain-source, 47A continuous, 22mOhm Rds(on) at 10V. Active production, TO-220AB package.","metaKeywords":null},"attributes":{"series":"HEXFET®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","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":"Active","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"2V @ 250µA","Base Product Number":"IRLZ44","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":"TO-220AB","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":"$1.4500","priceTiers":[{"qty":1,"price":"$1.45000","currency":"USD"},{"qty":10,"price":"$1.29900","currency":"USD"},{"qty":100,"price":"$1.01250","currency":"USD"},{"qty":500,"price":"$0.83642","currency":"USD"},{"qty":1000,"price":"$0.66033","currency":"USD"},{"qty":2000,"price":"$0.61631","currency":"USD"},{"qty":5000,"price":"$0.58549","currency":"USD"},{"qty":10000,"price":"$0.57420","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/cc1142cce3f609091490f0257506a892.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/IRLZ44NPBF/alternatives.json"},"ai":{"faq":[{"question":"Is IRLZ44NPBF compatible with 5V logic-level gate drive?","answer":"Yes. The maximum gate threshold voltage is 2 V at 250 µA, and the drive voltage for minimum Rds(on) is 10 V, but the part is specified for logic-level drive at 4 V minimum. A 5 V microcontroller output can turn it on fully — the 48 nC gate charge at 5 V is manageable with a 100 mA to 1 A gate driver, depending on the switching frequency."},{"question":"Can IRLZ44NPBF replace IRLZ44N in existing designs?","answer":"The IRLZ44NPBF is the lead-free (PbF) version of the IRLZ44N, with the same 55 V / 47 A rating and TO-220AB package. The electrical specs — Rds(on), gate charge, threshold — are identical. It is a direct drop-in replacement for the IRLZ44N in any design that already uses the leaded variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/IRLZ44NPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/IRLZ44NPBF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}