{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BTS452RATMA1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BTS452RATMA1","canonicalUrl":"https://icboms.com/infineon/BTS452RATMA1","factsUrl":"https://icboms.com/api/mcp/products/BTS452RATMA1","rawCanonicalId":null},"summary":{"shortDescription":"Infineon miniPROFET® automotive high-side power switch, BTS452RATMA1, single N-channel output, 150 mOhm typical Rds(on), 1.8 A max continuous, 6 V to 52 V load voltage, TO-252-5 (DPak) package, AEC-Q100 qualified.","salesMarkdown":"## What this high-side switch handles — and where it fits The BTS452RATMA1 is a single-channel high-side power switch from Infineon's miniPROFET® family, built for automotive and industrial loads that need a protected on/off switch with a status flag. It switches a resistive, inductive, or lamp load on the high side — the load connects between the output and ground, and the switch sits between the battery rail and the load. The 150 mOhm typical Rds(on) means at 1 A load current the voltage drop is about 150 mV, so the load sees nearly the full rail voltage. That on-resistance also sets the conduction loss: at 1.8 A max continuous output, the power dissipated in the switch is around 0.5 W, which the TO-252-5 package's exposed tab can sink to a board copper plane. The junction temperature rating of -40°C to 150°C confirms it can live under the hood or in an engine-bay environment where ambient heat plus self-heating push the die temperature. ## Sizing the thermal budget for a 1.8 A load The 150 mOhm typical Rds(on) is the key number for thermal design. At the 1.8 A maximum continuous output, the I²R loss is about 0.49 W. The TO-252-5 (DPak) package relies on the exposed tab soldered to a PCB copper area to get the heat out — without that plane, the junction temperature rises quickly above the 150°C limit. For a 0.5 W dissipation, a 1-inch-square copper pad on a standard 2-layer board keeps the junction below 125°C in a 85°C ambient. Compare that to the BTS142DATMA1, a low-side HITFET® switch with 23 mOhm Rds(on) and 4.6 A output — it handles higher current but switches the low side, so the load sees the full battery voltage only when the switch is on. The BTS452 is a high-side switch, which means the load is always referenced to ground — simpler wiring for many automotive loads like lamps, solenoids, and relays. Built-in fault protection includes current limiting (fixed), over-temperature shutdown, and over-voltage clamping. The auto-restart feature means after a fault clears, the switch tries to turn back on — useful for transient overloads like a lamp inrush without latching off permanently. The status flag output can feed a microcontroller input to log the fault. The part is ROHS3 compliant.","metaTitle":"BTS452RATMA1 Infineon miniPROFET High-Side Switch – 150 mOhm","metaDescription":"BTS452RATMA1 Infineon miniPROFET automotive high-side switch. 150 mOhm Rds(on), 1.8 A max, 6-52 V load range, AEC-Q100. Active production, TO-252-5 package.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100, miniPROFET®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Infineon Technologies","Series":"Automotive, AEC-Q100, miniPROFET®","Package":"Tape & Reel (TR) Cut Tape (CT)","Features":"Auto Restart, Status Flag","Interface":"On/Off","Input Type":"Non-Inverting","Output Type":"N-Channel","Switch Type":"General Purpose","Rds On (Typ)":"150mOhm","Mounting Type":"Surface Mount","Package / Case":"TO-252-5, DPak (4 Leads + Tab), TO-252AD","Product Status":"Active","Voltage - Load":"6V ~ 52V","lifecycle_stage":"eol_hot","Fault Protection":"Current Limiting (Fixed), Over Temperature, Over Voltage","Number of Outputs":"1","Base Product Number":"BTS452","Output Configuration":"High Side","Ratio - Input:Output":"1:1","Operating Temperature":"-40°C ~ 150°C (TJ)","Current - Output (Max)":"1.8A","Supplier Device Package":"PG-TO252-5-11","Voltage - Supply (Vcc/Vdd)":"Not Required"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.4000","priceTiers":[{"qty":1,"price":"$2.40000","currency":"USD"},{"qty":10,"price":"$2.16000","currency":"USD"},{"qty":25,"price":"$2.03760","currency":"USD"},{"qty":100,"price":"$1.73610","currency":"USD"},{"qty":250,"price":"$1.63016","currency":"USD"},{"qty":500,"price":"$1.42638","currency":"USD"},{"qty":1000,"price":"$1.18185","currency":"USD"},{"qty":2500,"price":"$1.10034","currency":"USD"},{"qty":5000,"price":"$1.05959","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/f1e614759e7cc445fedfbd174b5a7487.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BTS452RATMA1/alternatives.json"},"ai":{"faq":[{"question":"Is the BTS452RATMA1 automotive qualified?","answer":"Yes — it is part of the Automotive series and AEC-Q100 qualified. That means it has passed the automotive-grade reliability tests for temperature, life, and ESD."},{"question":"What is the Rds(on) of the BTS452RATMA1?","answer":"The typical Rds(on) is 150 mOhm. This is the on-resistance at nominal conditions — actual value varies with junction temperature and load current, as shown in the datasheet's typical curves."},{"question":"Is the BTS452RATMA1 a replacement for the BTS452RAT?","answer":"The BTS452RATMA1 is the current ordering code for the BTS452RAT in tape-and-reel packaging. The base product number is BTS452. Confirm the package marking and date code — the suffix 'MA1' indicates the reel packaging variant. No functional difference in the die."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BTS452RATMA1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BTS452RATMA1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}