{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"IRFF9221","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"IRFF9221","canonicalUrl":"https://icboms.com/infineon/IRFF9221","factsUrl":"https://icboms.com/api/mcp/products/IRFF9221","rawCanonicalId":null},"summary":{"shortDescription":"Infineon Technologies HEXFET® series N-Channel MOSFET, IRFF9221, 150V 2.5A, 20W, TO-205AF through-hole, bulk package.","salesMarkdown":"## 150V 2.5A N-channel in a TO-205AF can The IRFF9221 is an N-channel enhancement-mode MOSFET from Infineon's HEXFET series, rated for 150 V drain-source and 2.5 A continuous drain current in a through-hole TO-205AF package. The 150 V breakdown gives headroom for 48 V, 72 V, or 100 V bus rails — the derating margin covers switching transients without avalanche stress. 2.5 A continuous rating suits moderate-load switching in DC-DC converters, solenoid drivers, and auxiliary power stages where a TO-220 would be oversized. ## 20 W power dissipation in a metal-can package Maximum power dissipation is 20 W — this is the thermal budget at the case, not the junction. The TO-205AF metal can conducts heat through the mounting flange; a heatsink or PCB copper area is needed to stay inside the SOA at continuous 2.5 A. The through-hole mounting (TO-205AF) provides a lower thermal resistance path to the heatsink than a surface-mount equivalent — the metal tab can be bolted or clamped directly.","metaTitle":"Infineon IRFF9221 N-Channel MOSFET, 150V 2.5A, TO-205AF","metaDescription":"IRFF9221 HEXFET N-channel MOSFET, 150V 2.5A, 20W, TO-205AF through-hole. Active production, available to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"series":"HEXFET®","power_w":"20.0","Fet Type":"N-Channel","package_type":"Bulk","mounting_type":"Through Hole","product_status":"Active","lifecycle_stage":"eol_hot","supply_voltage_v":"150.0","switching_current_a":"2.5"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.89","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/0563749e50b1e6b04781b820fbf5ca2b.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/IRFF9221","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/IRFF9221 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}}