{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"IRFZ44ZPBF","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"IRFZ44ZPBF","canonicalUrl":"https://icboms.com/infineon/IRFZ44ZPBF","factsUrl":"https://icboms.com/api/mcp/products/IRFZ44ZPBF","rawCanonicalId":null},"summary":{"shortDescription":"Infineon Technologies HEXFET® series N-Channel MOSFET, TO-220-3 package, 55 V drain-source, 51 A continuous drain, 13.9 mOhm Rds(on) at 10 V gate drive.","salesMarkdown":"## 55 V, 51 A N-channel power switch — where the Rds(on) matters The IRFZ44ZPBF is a 55 V, 51 A N-channel MOSFET from Infineon's HEXFET® series, housed in a through-hole TO-220-3 package. The headline numbers — 55 V drain-to-source and 51 A continuous drain at 25°C case temperature — place it in the medium-voltage power-switching class, suited for DC motor drives, battery management, and DC-DC converter primary switches where the rail sits at 12 V, 24 V, or 48 V. ## Switching-speed parametrics and gate-drive budget These numbers set the switching-speed ceiling: a gate driver sourcing 1 A charges the gate in about 43 ns, but the Miller plateau and output capacitance (not listed) extend the actual switching interval. The IRFZ44ZPBF carries a Not Recommended for New Designs (NRND) status from Infineon. This means the part is still available for existing production but is not qualified for new design-ins. For a BOM line already using this MOSFET, the NRND flag signals that a last-time-buy window may open — sourcing through independent distribution against an RFQ is the practical path for sustaining production. ## Through-hole TO-220 — board and thermal integration The tab is electrically common with the drain — an insulating pad and thermal grease are required if the heatsink is grounded. The 80 W power dissipation at the case assumes the tab is held at 25°C; in practice, the junction-to-case thermal resistance (not listed) and the heatsink's thermal resistance set the real power limit.","metaTitle":"IRFZ44ZPBF Infineon N-Channel MOSFET, 55V 51A TO-220","metaDescription":"IRFZ44ZPBF N-channel MOSFET, 55V Vdss, 51A Id, 13.9mOhm Rds(on). NRND lifecycle. RoHS3 compliant. Sourced to order against RFQ through independent distribution.","metaKeywords":null},"attributes":{"series":"HEXFET®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"NRND","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":"Through Hole","Package / Case":"TO-220-3","Product Status":"Not For New Designs","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"4V @ 250µA","Base Product Number":"IRFZ44","Operating Temperature":"-55°C ~ 175°C (TJ)","Rds On (Max) @ Id, Vgs":"13.9mOhm @ 31A, 10V","Power Dissipation (Max)":"80W (Tc)","Supplier Device Package":"TO-220AB","Gate Charge (Qg) (Max) @ Vgs":"43 nC @ 10 V","Drain to Source Voltage (Vdss)":"55 V","Input Capacitance (Ciss) (Max) @ Vds":"1420 pF @ 25 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"51A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9900","priceTiers":[{"qty":1,"price":"$1.12000","currency":"USD"},{"qty":10,"price":"$1.00400","currency":"USD"},{"qty":100,"price":"$0.78290","currency":"USD"},{"qty":500,"price":"$0.64676","currency":"USD"},{"qty":1000,"price":"$0.51060","currency":"USD"},{"qty":2000,"price":"$0.47656","currency":"USD"},{"qty":5000,"price":"$0.45273","currency":"USD"},{"qty":10000,"price":"$0.44400","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/9d45e4085e3e9dd22dde0bdbb7938cbb.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/IRFZ44ZPBF/alternatives.json"},"ai":{"faq":[{"question":"What is the Rds(on) of IRFZ44ZPBF at 10 V gate drive?","answer":"This is the figure to use for conduction loss calculations at full enhancement."},{"question":"What package does IRFZ44ZPBF come in?","answer":"Through-hole TO-220-3, also designated TO-220AB. The metal tab is the drain terminal and requires electrical isolation if mounted to a grounded heatsink."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/IRFZ44ZPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/IRFZ44ZPBF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T20:12:36.176Z","lastPublished":"2026-07-20T20:12:36.176Z","indexable":true}}