{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BUZ73AIN","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BUZ73AIN","canonicalUrl":"https://icboms.com/infineon/BUZ73AIN","factsUrl":"https://icboms.com/api/mcp/products/BUZ73AIN","rawCanonicalId":null},"summary":{"shortDescription":"Infineon SIPMOS® BUZ73AIN, N-Channel Power MOSFET, 200 V Vdss, 5.5 A Id, 600 mOhm Rds(on) @ 4.5 A, 10 V, TO-220-3, Through Hole, -55°C to 150°C.","salesMarkdown":"## 200 V N-channel MOSFET in a TO-220-3 — what it handles The Infineon BUZ73AIN is an N-channel power MOSFET from the SIPMOS® family, rated for 200 V drain-to-source and 5.5 A continuous drain current at 25 °C case temperature. On-resistance is specified at 600 mOhm maximum with a 10 V gate drive, which keeps conduction losses manageable for a 40 W package in a TO-220-3 through-hole mount. The gate threshold is 4 V at 1 mA, so a 10 V drive is recommended to achieve the rated Rds(on). ## Where it fits in a power stage The 200 V Vdss and 5.5 A Id suit DC-DC converters, flyback primary switches, motor drives, and solenoid drivers. The part is from the Infineon SIPMOS® series, a long-running MOSFET family with established second sources in the TO-220 footprint.","metaTitle":"Infineon BUZ73AIN N-Channel Power MOSFET, 200 V, 5.5 A","metaDescription":"Infineon SIPMOS® BUZ73AIN N-channel MOSFET, 200 V Vdss, 5.5 A Id, 600 mOhm Rds(on). TO-220-3 package, active lifecycle.","metaKeywords":null},"attributes":{"series":"SIPMOS®","packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":[],"specifications":{"Series":"SIPMOS®","Package":"Bulk","FET Type":"N-Channel","Vgs (Max)":"±20V","Technology":"MOSFET (Metal Oxide)","Mounting Type":"Through Hole","Package / Case":"TO-220-3","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"4V @ 1mA","Operating Temperature":"-55°C ~ 150°C (TJ)","Rds On (Max) @ Id, Vgs":"600mOhm @ 4.5A, 10V","Power Dissipation (Max)":"40W (Tc)","Supplier Device Package":"PG-TO220-3-1","Drain to Source Voltage (Vdss)":"200 V","Input Capacitance (Ciss) (Max) @ Vds":"530 pF @ 25 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"5.5A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.32","priceTiers":[{"qty":966,"price":"$0.32000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a19137d80129513eed371f12c9de6ca2.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BUZ73AIN/alternatives.json"},"ai":{"faq":[{"question":"What is the equivalent of BUZ73AIN?","answer":"A common cross-shop candidate is the IRF840, also a 500 V N-channel TO-220 MOSFET, but the BUZ73AIN is a 200 V part — the voltage class differs. For a 200 V pin-compatible alternative within the SIPMOS® family, check the Infineon BUZ71A or BUZ72A series parts in the same TO-220-3 footprint. Verify gate threshold and Rds(on) against your load requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BUZ73AIN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BUZ73AIN when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T10:39:33.080Z","lastPublished":"2026-07-16T10:39:33.080Z","indexable":true}}