{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BTS432E2E3043","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BTS432E2E3043","canonicalUrl":"https://icboms.com/infineon/BTS432E2E3043","factsUrl":"https://icboms.com/api/mcp/products/BTS432E2E3043","rawCanonicalId":null},"summary":{"shortDescription":"Infineon PROFET® series, BTS432E2E3043, high-side power switch, 30 mOhm Rds(on) typ, 9 A max output, 4.5 V to 42 V load supply, TO-220-5 through-hole package, -40°C to 150°C junction temperature.","salesMarkdown":"## 30 mOhm Rds(on) — the conduction loss floor for a 9 A load The BTS432E2E3043 is a single-channel high-side power switch from Infineon's PROFET® family, designed to replace a relay or discrete MOSFET in 12 V and 24 V automotive loads. The 30 mOhm typical on-resistance sets the conduction loss at 9 A continuous output — about 2.4 W dissipation at full load, which the TO-220-5 package sinks to the board or a heatsink. The 4.5 V to 42 V load supply range covers nominal 12 V car electrical systems and 24 V truck/bus systems without a separate gate-drive supply (Vcc/Vdd not required). ## Fault protection suite — what the original design relied on This part integrates fixed current limiting, open-load detection, over-temperature shutdown, and over-voltage clamping — the full protection set that makes a PROFET a self-protecting smart switch rather than a bare MOSFET. The auto-restart feature means the switch re-enables after a fault clears, which is useful for lamp or motor loads that draw inrush current. The status flag output (open-drain) feeds a microcontroller GPIO for diagnostic readback. ## Obsolete — sourcing through independent distribution Infineon lists the BTS432E2E3043 as obsolete. A buyer planning a new design should evaluate Infineon's current PROFET portfolio for a form-fit-function replacement; the TO-220-5 footprint and 30 mOhm Rds(on) class narrow the search.","metaTitle":"Infineon BTS432E2E3043 PROFET High-Side Switch, 30 mOhm","metaDescription":"Infineon BTS432E2E3043 PROFET high-side power switch, 30 mOhm Rds(on), 9 A output, TO-220-5. Quoted on request.","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","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":"P-TO220-5","Voltage - Supply (Vcc/Vdd)":"Not Required"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.1600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d272cf7e028ca94c2860e5d5c4a7b7f3.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the replacement for BTS432E2E3043?","answer":"Infineon does not list an official successor for the BTS432E2E3043. A buyer planning a new design should evaluate Infineon's current PROFET portfolio for a part with similar Rds(on) (30 mOhm typ), 9 A output, and TO-220-5 footprint. The original part's protection features — current limiting, open-load detect, over-temperature, over-voltage, and auto-restart — should be matched in the replacement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BTS432E2E3043","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BTS432E2E3043 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}}