{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BTS426L1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BTS426L1","canonicalUrl":"https://icboms.com/infineon/BTS426L1","factsUrl":"https://icboms.com/api/mcp/products/BTS426L1","rawCanonicalId":null},"summary":{"shortDescription":"Infineon PROFET® BTS426L1, high-side power switch, 1 output, N-channel, 50 mOhm typ Rds(on), 5.8 A max, 5V to 34V load, TO-220-5 formed leads, -40°C to 150°C.","salesMarkdown":"## High-side switch with 50 mOhm on-resistance The BTS426L1 is a single-channel high-side power switch from Infineon's PROFET® family, built with an N-channel MOSFET output and a typical on-resistance of 50 mOhm. It switches loads from 5 V to 34 V, delivering up to 5.8 A continuous, and requires no external Vcc supply — the gate drive is self-biased from the load voltage. ## Fault protection and diagnostic feedback Integrated fault protection covers current limiting (fixed), open-load detection, over-temperature shutdown, and over-voltage clamping. A status flag output signals fault conditions to the host controller. The auto-restart feature re-enables the switch after a thermal fault once the junction cools, which is useful for intermittent overloads in lamp or motor loads. ## Through-hole package for high-current routing Housed in a TO-220-5 package with formed leads (P-TO220-5-3), the BTS426L1 is a through-hole device suited for point-of-load switching where board-level heat sinking is needed. The large tab provides a low thermal resistance path to the PCB or an external heatsink — critical when running near the 5.8 A maximum at elevated ambient temperatures. Infineon has classified the BTS426L1 as obsolete.","metaTitle":"BTS426L1 PROFET high-side switch, 50 mOhm, 5.8 A, obsolete","metaDescription":"Infineon BTS426L1 PROFET high-side power switch, 50 mOhm Rds(on), 5.8 A output, 5-34 V load range, -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 Formed Leads","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-TO220-5-3","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?","answer":"No official replacement or successor part number is recorded for the BTS426L1. A functionally similar PROFET® high-side switch with comparable Rds(on) and current rating should be evaluated for new designs — confirm pin-compatibility and protection feature set with the Infineon product selector."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BTS426L1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BTS426L1 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}}