{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SPA20N65C3XKSA1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"SPA20N65C3XKSA1","canonicalUrl":"https://icboms.com/infineon/SPA20N65C3XKSA1","factsUrl":"https://icboms.com/api/mcp/products/SPA20N65C3XKSA1","rawCanonicalId":null},"summary":{"shortDescription":"Infineon CoolMOS™ N-Channel MOSFET, 650V Vdss, 20.7A Id, 190mOhm Rds(on) at 10V, 114nC gate charge, TO-220-3 Full Pack, -55°C to 150°C.","salesMarkdown":"## 650 V CoolMOS™ — what this N-channel MOSFET brings to the power stage The SPA20N65C3XKSA1: The full-pack (isolated) TO-220-3 variant eliminates the need for an insulating washer between the tab and heatsink, simplifying assembly in grounded-heatsink designs. The wide temperature window also provides thermal headroom for derating in high-current, high-frequency switching stages. ## NRND status — plan the replacement now Infineon lists this part as Not Recommended for New Designs (NRND). That means it is still available through existing inventory and last-time-buy windows, but the manufacturer will not guarantee long-term production. For new BOM lines or a second-source qualification, the buyer should identify a pin-compatible successor in the CoolMOS™ family — the C3 series has been superseded by later generations that offer lower Rds(on) and faster switching. The SPA20N65C3XKSA1 remains a valid replacement for the older SPA20N65C3 in service and repair applications, provided the date codes and thermal interface match. ## Specs that drive the design decision The 650 V drain-source rating provides a 1.6× margin over a nominal 400 VDC bus (typical PFC output), leaving room for switching overshoot and line transients. The 190 mOhm Rds(on) at 10 V gate drive sets the conduction loss target: at 13.1 A drain current, expect roughly 33 W dissipation in the channel alone — the 34.5 W package power limit means the heatsink design is critical. Gate charge of 114 nC at 10 V dictates the driver's peak current capability; a standard 1 A gate driver will slew the gate in about 114 ns, acceptable for switching frequencies up to 100 kHz. Input capacitance of 2400 pF at 25 V Vds influences the drive loop and contributes to switching losses.","metaTitle":"Infineon SPA20N65C3XKSA1 CoolMOS N-Ch MOSFET, 650V, 20.7A","metaDescription":"Infineon SPA20N65C3XKSA1 CoolMOS N-channel MOSFET, 650V Vdss, 20.7A Id, 190mOhm Rds(on), TO-220-3 Full Pack, -55°C to 150°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Infineon Technologies","Series":"CoolMOS™","Package":"Tube","FET Type":"N-Channel","Vgs (Max)":"±20V","Technology":"MOSFET (Metal Oxide)","FET Feature":"-","Mounting Type":"Through Hole","Package / Case":"TO-220-3 Full Pack","Product Status":"Not For New Designs","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"3.9V @ 1mA","Base Product Number":"SPA20N65","Operating Temperature":"-55°C ~ 150°C (TJ)","Rds On (Max) @ Id, Vgs":"190mOhm @ 13.1A, 10V","Power Dissipation (Max)":"34.5W (Tc)","Supplier Device Package":"PG-TO220-3-31","Gate Charge (Qg) (Max) @ Vgs":"114 nC @ 10 V","Drain to Source Voltage (Vdss)":"650 V","Input Capacitance (Ciss) (Max) @ Vds":"2400 pF @ 25 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"20.7A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.8178","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"Is SPA20N65C3XKSA1 obsolete?","answer":"Infineon has marked this part as Not Recommended for New Designs (NRND). It is not fully discontinued, but the manufacturer advises against using it in new products. Existing inventory and last-time-buy allocations are still available through independent distribution — confirmed at quote time."},{"question":"What is the replacement for SPA20N65C3XKSA1?","answer":"Infineon has not published an official direct successor for the SPA20N65C3XKSA1 within the same TO-220 Full Pack footprint. Later CoolMOS™ generations (C7, P7, CFD7) offer lower Rds(on) and faster switching in compatible packages, but pin compatibility and drive requirements must be verified against the specific application. For service replacements, the older SPA20N65C3 is a direct drop-in substitute."},{"question":"Can I use SPA20N65C3XKSA1 as replacement for SPA20N65C3?","answer":"Yes, the SPA20N65C3XKSA1 is functionally identical to the SPA20N65C3 — same base product number, same 650 V / 20.7 A ratings, same TO-220 Full Pack package. The 'XKSA1' suffix denotes a specific packaging and reel/tube configuration. It is a valid drop-in replacement for the base SPA20N65C3 in existing designs."},{"question":"What is the lead time for SPA20N65C3XKSA1?","answer":"Lead time varies by current inventory and supplier allocation. We quote to order against your specific quantity and required date code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/SPA20N65C3XKSA1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/SPA20N65C3XKSA1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}