{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"IRFAF52","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"IRFAF52","canonicalUrl":"https://icboms.com/infineon/IRFAF52","factsUrl":"https://icboms.com/api/mcp/products/IRFAF52","rawCanonicalId":null},"summary":{"shortDescription":"Infineon Technologies IRFAF52 N-Channel Hermetic MOS HEXFET, 900 V, 5.7 A, 150 W, Through Hole, Bulk.","salesMarkdown":"## Hermetic HEXFET for high-reliability power stages The IRFAF52 is an N-Channel hermetic MOS HEXFET rated for 900 V drain-source and 5.7 A continuous switching current, dissipating 150 W in a through-hole package. The hermetic seal — a ceramic or metal-can construction rather than epoxy overmold — qualifies this part for military, avionics, and downhole environments where moisture ingress or outgassing in a sealed enclosure would kill a plastic FET within months. ## 900 V, 5.7 A — reading the safe operating area The headline 150 W dissipation is the thermal budget at the case, not a free lunch. At 900 V the current must be derated well below 5.7 A — the switching SOA at that voltage is limited by the linear-mode region and the RDS(on) temperature multiplier. This is a part for a 400–600 V DC bus where the switching edges are fast and the duty cycle keeps the average current under 2–3 A in a typical flyback or two-switch forward converter. ## Active lifecycle — no end-of-life pressure Infineon lists the IRFAF52 as Active. There is no official pin-compatible successor — the hermetic HEXFET line is a niche, not a commodity family, so a replacement would require a package and pinout change.","metaTitle":"IRFAF52 Infineon N-Channel MOSFET, 900 V, 5.7 A, 150 W","metaDescription":"IRFAF52 N-Channel hermetic MOS HEXFET from Infineon. 900 V, 5.7 A, 150 W. Through-hole package. Active production — quoted to order. RFQ for pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"power_w":"150.0","Fet Type":"N-Channel","package_type":"Bulk","mounting_type":"Through Hole","product_status":"Active","lifecycle_stage":"eol_hot","supply_voltage_v":"900.0","switching_current_a":"5.7"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.53","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/564bcb501e58dd45fefeaec5743d05c0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How can I order the IRFAF52 or check current pricing?","answer":"The IRFAF52 is an active Infineon part. No stock-holding claim is made — sourcing is confirmed per order."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/IRFAF52","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/IRFAF52 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}}