{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"IPS0551T","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"IPS0551T","canonicalUrl":"https://icboms.com/infineon/IPS0551T","factsUrl":"https://icboms.com/api/mcp/products/IPS0551T","rawCanonicalId":null},"summary":{"shortDescription":"Infineon IPS0551T low-side N-channel power switch, 35A max output, 4.5 mOhm typical Rds(on), 18V load max, through-hole TO-273AA (SUPER-220) package, -40°C to 150°C junction temperature, obsolete.","salesMarkdown":"It handles loads up to 18V and requires no Vcc supply — the gate is driven directly by the logic-level input. Built-in fault protection includes fixed current limiting and over-temperature shutdown, making it suitable for driving inductive loads like solenoids, relays, motors, and lamps in harsh environments such as automotive under-hood or industrial machinery. At 35A continuous, a 4.5 mOhm typical Rds(on) means conduction losses of roughly 5.5 W at full load — manageable with the through-hole package bolted to a heatsink. The low on-resistance keeps the junction temperature rise under control even in the -40°C to 150°C operating range. ## Package and mounting — TO-273AA (SUPER-220) The IPS0551T comes in a through-hole TO-273AA package, also called SUPER-220. This is a large tabbed package designed for heatsink mounting — the metal tab is the drain connection and must be electrically isolated or connected to the appropriate rail.","metaTitle":"IPS0551T low-side switch, 35A, 4.5 mOhm, TO-273AA","metaDescription":"IPS0551T is an obsolete low-side N-channel power switch rated 35A with 4.5 mOhm Rds(on).","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Infineon Technologies","Series":"-","Package":"Tube","Features":"-","Interface":"On/Off","Input Type":"Non-Inverting","Output Type":"N-Channel","Switch Type":"General Purpose","Rds On (Typ)":"4.5mOhm","Mounting Type":"Through Hole","Package / Case":"TO-273AA","Product Status":"Obsolete","Voltage - Load":"18V (Max)","lifecycle_stage":"eol_hot","Fault Protection":"Current Limiting (Fixed), Over Temperature","Number of Outputs":"1","Base Product Number":"IPS0551","Output Configuration":"Low Side","Ratio - Input:Output":"1:1","Operating Temperature":"-40°C ~ 150°C (TJ)","Current - Output (Max)":"35A","Supplier Device Package":"SUPER-220™ (TO-273AA)","Voltage - Supply (Vcc/Vdd)":"Not Required"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.9500","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/IPS0551T/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for the IPS0551T?","answer":"For a pin-compatible replacement, look for a low-side N-channel switch in a TO-273AA (SUPER-220) package rated for 35A or higher, with a similar 4.5 mOhm Rds(on) and 18V load capability. Cross-referencing against Infineon's current low-side switch portfolio is recommended."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/IPS0551T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/IPS0551T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}