{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BTS426L1 E3043","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BTS426L1-E3043","canonicalUrl":"https://icboms.com/infineon/BTS426L1-E3043","factsUrl":"https://icboms.com/api/mcp/products/BTS426L1%20E3043","rawCanonicalId":null},"summary":{"shortDescription":"Infineon PROFET series, BTS426L1 E3043, high-side switch, 1 output, 50 mOhm Rds(on) typ, 5.8 A max, 5V ~ 34V load, TO-220-5 through-hole, -40°C to 150°C junction.","salesMarkdown":"## 50 mOhm Rds(on) — conduction loss at rated load The BTS426L1 E3043 is a single-channel PROFET high-side switch from Infineon, designed for general-purpose switched loads in automotive and industrial environments. Its 50 mOhm typical on-resistance at 25°C sets the conduction loss floor — at 5.8 A the I²R dissipation is about 1.7 W, which the TO-220-5 package can sink with a reasonable copper area on the tab. Rated for a 5V to 34V load supply, the part handles continuous currents up to 5.8 A. The integrated protection suite — current limiting (fixed), open-load detect, over-temperature, and over-voltage — means the switch can survive a shorted load or a stalled motor without external clamp diodes, as long as the thermal shutdown cycle is accounted for in the system duty cycle. Infineon lists the BTS426L1 as obsolete. The date-code and marking consistency should be checked against Infineon's factory laser-etch standards; a mismatch flags possible re-marked stock.","metaTitle":"BTS426L1 E3043 PROFET high-side switch, 50 mOhm, 5.8 A","metaDescription":"BTS426L1 E3043 Infineon PROFET high-side switch, 50 mOhm Rds(on), 5.8 A max, TO-220-5, -40 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)":"50mOhm","Mounting Type":"Through Hole","Package / Case":"TO-220-5","Product Status":"Obsolete","Voltage - Load":"5V ~ 34V","lifecycle_stage":"eol_hot","Fault Protection":"Current Limiting (Fixed), Open Load Detect, Over Temperature, Over Voltage","Number of Outputs":"1","Base Product Number":"BTS426L1","Output Configuration":"High Side","Ratio - Input:Output":"1:1","Operating Temperature":"-40°C ~ 150°C (TJ)","Current - Output (Max)":"5.8A","Supplier Device Package":"P-TO220-5","Voltage - Supply (Vcc/Vdd)":"Not Required"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.8700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e741feb9c8a8292e9705cb89e4fdbffc.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the replacement for BTS426L1 E3043?","answer":"No official replacement order code is documented. A buyer should evaluate other PROFET high-side switches in the same TO-220-5 footprint with comparable Rds(on) and current rating, such as the BTS426L1 (without the E3043 suffix) or newer series like the PROFET+2 family, but each requires pin-compatibility and parametric verification against the original BOM."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BTS426L1-E3043","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BTS426L1-E3043 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}}