{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BTS432E2BKSA1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BTS432E2BKSA1","canonicalUrl":"https://icboms.com/infineon/BTS432E2BKSA1","factsUrl":"https://icboms.com/api/mcp/products/BTS432E2BKSA1","rawCanonicalId":null},"summary":{"shortDescription":"Infineon PROFET series BTS432E2BKSA1, high-side power switch, 1 output, N-channel, 30 mOhm typ Rds(on), 9A max, 4.5V to 42V load, TO-220-5, -40°C to 150°C.","salesMarkdown":"## 30 mOhm Rds(on) — what it buys the load circuit The Infineon BTS432E2BKSA1 is a single-channel PROFET high-side power switch rated for a continuous output current of 9 A with a typical on-resistance of 30 mOhm. That Rds(on) figure sets the conduction loss floor: at 9 A the I²R dissipation is about 2.4 W, which the TO-220-5 package (PG-TO220-5-3) must sink through the board or a heatsink tab. ## Built-in fault protection saves board space The BTS432E2BKSA1 integrates current limiting (fixed), open-load detection, over-temperature shutdown, and over-voltage clamping. For a design engineer, this means the switch handles most fault conditions autonomously — no external sense resistor, no comparator, no latching circuit. The auto-restart feature re-enables the output after a thermal fault once the junction cools, which is useful for driving lamps or motors where a temporary overload is expected. Infineon lists the BTS432E2BKSA1 as obsolete. If the design can tolerate a footprint change, a current-production PROFET in a similar TO-220-5 package is the practical path; otherwise, stock up while the surplus channel still carries inventory. ## Temperature grade and deployment context The through-hole TO-220-5 package with formed leads allows the tab to be bolted to a heatsink or chassis ground — a common practice in motor-drive and solenoid-drive circuits where the 9 A output is used near its limit.","metaTitle":"Infineon BTS432E2BKSA1 PROFET High-Side Switch, 30 mOhm, 9A","metaDescription":"Infineon BTS432E2BKSA1 PROFET high-side power switch, 30 mOhm Rds(on), 9A max output, -40°C to 150°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Infineon Technologies","Series":"PROFET®","Package":"Tube","Features":"Auto Restart, Status Flag","Interface":"On/Off","Input Type":"Non-Inverting","Output Type":"N-Channel","Switch Type":"General Purpose","Rds On (Typ)":"30mOhm","Mounting Type":"Through Hole","Package / Case":"TO-220-5 Formed Leads","Product Status":"Obsolete","Voltage - Load":"4.5V ~ 42V","lifecycle_stage":"eol_hot","Fault Protection":"Current Limiting (Fixed), Open Load Detect, Over Temperature, Over Voltage","Number of Outputs":"1","Base Product Number":"BTS432E2","Output Configuration":"High Side","Ratio - Input:Output":"1:1","Operating Temperature":"-40°C~150°C(TJ)","Current - Output (Max)":"9A","Supplier Device Package":"PG-TO220-5-3","Voltage - Supply (Vcc/Vdd)":"Not Required"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.6600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/6e37274f348df68b985be7b26f9f75b9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the BTS432E2BKSA1 obsolete?","answer":"Yes, Infineon lists the BTS432E2BKSA1 as obsolete. No official replacement part number has been published. For new designs, consider a current-production PROFET with a similar Rds(on) and package; for existing BOMs, source through the surplus channel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BTS432E2BKSA1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BTS432E2BKSA1 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}}