{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BTS4140NNT","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BTS4140NNT","canonicalUrl":"https://icboms.com/infineon/BTS4140NNT","factsUrl":"https://icboms.com/api/mcp/products/BTS4140NNT","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BTS4140NNT high-side power switch, 1 output, N-channel, 4.9V to 60V load, 200mA max output, 1 Ohm typical Rds(on), PG-SOT223-4 package, -40°C to 150°C junction temperature.","salesMarkdown":"## A high-side switch that handles the rough stuff The Infineon BTS4140NNT is a single-channel high-side power switch in a PG-SOT223-4 package, designed to drive resistive, inductive, and capacitive loads from a 4.9V to 60V supply rail. It delivers up to 200 mA continuous output with a typical on-resistance of 1 Ohm, keeping voltage drop and self-heating manageable even in a tight layout. The switch integrates current limiting, over-temperature protection, and over-voltage clamping — so a shorted load or a load-dump transient won't take out the trace or the MCU GPIO driving it. The 60 V load voltage ceiling means this switch sits comfortably on 12 V and 24 V vehicle electrical systems, and it has headroom for 48 V industrial bus rails. The 200 mA continuous output is enough for relays, solenoids, indicator LEDs, and small DC motors — but not for a headlamp or a pump. The 1 Ohm Rds(on) at 200 mA drops only 0.2 V, so the load sees nearly the full rail voltage. The auto-restart feature (listed in the features) means the switch tries to re-energise the load after a fault clears — useful for a lamp that cools down or a motor that un-stalls, but something to note if you want latched-off behaviour. ## Lifecycle reality — obsolete, but sourced The BTS4140NNT carries an obsolete lifecycle status. Infineon no longer manufactures it in volume, and there is no official successor listed on the record. ## Package and footprint for the board The PG-SOT223-4 package (TO-261-4 equivalent) is a surface-mount footprint with a large tab for thermal dissipation. The 1:1 input-to-output ratio means one GPIO pin controls one load — no serial interface, no diagnostics, just On/Off via a non-inverting input.","metaTitle":"BTS4140NNT High-Side Switch, 60V, 200mA, PG-SOT223-4","metaDescription":"BTS4140NNT high-side power switch, 4.9V-60V load, 200mA output, 1 Ohm Rds(on), auto restart, fault protection.","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":"Tape & Reel (TR)","Features":"Auto Restart","Interface":"On/Off","Input Type":"Non-Inverting","Output Type":"N-Channel","Switch Type":"General Purpose","Rds On (Typ)":"1Ohm","Mounting Type":"Surface Mount","Package / Case":"TO-261-4, TO-261AA","Product Status":"Obsolete","Voltage - Load":"4.9V ~ 60V","lifecycle_stage":"eol_hot","Fault Protection":"Current Limiting (Fixed), Over Temperature, Over Voltage","Number of Outputs":"1","Base Product Number":"BTS4140","Output Configuration":"High Side","Ratio - Input:Output":"1:1","Operating Temperature":"-40°C ~ 150°C (TJ)","Current - Output (Max)":"200mA","Supplier Device Package":"PG-SOT223-4","Voltage - Supply (Vcc/Vdd)":"Not Required"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.5900","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/1e40ebf0e19974b7b960385b901fee8b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does BTS4140NNT have over-temperature protection?","answer":"Yes, the BTS4140NNT integrates over-temperature protection as part of its fault-protection set, along with current limiting (fixed) and over-voltage clamping. The auto-restart feature means the switch will attempt to re-energise the load after the over-temperature condition clears."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BTS4140NNT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BTS4140NNT 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}}