{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BCR573E6433HTMA1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BCR573E6433HTMA1","canonicalUrl":"https://icboms.com/infineon/BCR573E6433HTMA1","factsUrl":"https://icboms.com/api/mcp/products/BCR573E6433HTMA1","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BCR573E6433HTMA1 PNP pre-biased transistor, 500 mA collector current, 50 V VCEO, 150 MHz transition frequency, R1=1 kOhm, R2=10 kOhm, in SOT-23-3 package, Tape & Reel.","salesMarkdown":"## PNP pre-biased transistor with built-in resistors The Infineon BCR573E6433HTMA1 is a PNP pre-biased transistor in a SOT-23-3 package. It integrates two bias resistors — R1 of 1 kOhm between base and emitter, and R2 of 10 kOhm between base and the bias node — eliminating the need for external resistor pairs in switching and driver circuits. This saves board space and reduces component count in applications like relay drivers, lamp drivers, and logic-level interface stages. ## 500 mA collector current and 50 V breakdown The transistor is rated for a maximum collector current of 500 mA and a collector-emitter breakdown voltage of 50 V. The DC current gain (hFE) is a minimum of 70 at 50 mA and 5 V, and the saturation voltage (Vce(sat)) is 300 mV at 2.5 mA base current and 50 mA collector current. These ratings suit it for medium-current switching in 12 V and 24 V industrial and automotive auxiliary circuits. ## 150 MHz transition frequency With a transition frequency of 150 MHz, the BCR573E6433HTMA1 can handle moderate-speed switching up to several megahertz. The built-in resistors limit base drive, so the actual switching speed depends on the external drive voltage and load capacitance — but for typical relay or LED switching below 1 MHz, the 150 MHz fT provides ample margin. ## Last Buy — plan your final procurement This part carries a Last Buy lifecycle status. That means Infineon has announced the end of production, and the final ordering window is open now. If your BOM depends on the BCR573E6433HTMA1, secure your lifetime buy quantity or qualify a replacement before the window closes.","metaTitle":"Infineon BCR573E6433HTMA1 PNP Pre-Biased Transistor, 500 mA","metaDescription":"Infineon BCR573E6433HTMA1 PNP pre-biased transistor with R1=1 kOhm, R2=10 kOhm, 500 mA Ic, 50 V VCEO, 150 MHz fT. SOT-23-3 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Last Buy","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Infineon Technologies","Series":"-","Package":"Tape & Reel (TR)","Power - Max":"330 mW","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Last Time Buy","Transistor Type":"PNP - Pre-Biased","lifecycle_stage":"eol_hot","Base Product Number":"BCR573","Resistor - Base (R1)":"1 kOhms","Frequency - Transition":"150 MHz","Supplier Device Package":"PG-SOT23","Resistor - Emitter Base (R2)":"10 kOhms","Vce Saturation (Max) @ Ib, Ic":"300mV @ 2.5mA, 50mA","Current - Collector (Ic) (Max)":"500 mA","Current - Collector Cutoff (Max)":"100nA (ICBO)","DC Current Gain (hFE) (Min) @ Ic, Vce":"70 @ 50mA, 5V","Voltage - Collector Emitter Breakdown (Max)":"50 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.0736","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://www.infineon.com/dgdl/bcr573.pdf?folderId=db3a30431428a373011440769fd70304&fileId=db3a30431428a373011440841409030e","sourceUrl":null},"ai":{"faq":[{"question":"Is BCR573E6433HTMA1 obsolete?","answer":"The BCR573E6433HTMA1 carries a Last Buy lifecycle status. It is not yet obsolete, but the final ordering window is open — plan your procurement accordingly."},{"question":"What is the replacement for BCR573E6433HTMA1?","answer":"For a pin-compatible alternative within the same family, look at other BCR573 variants (base product number BCR573) with different resistor ratios or package options. Confirm electrical compatibility with your design before substituting."},{"question":"What are the R1 and R2 values for BCR573E6433HTMA1?","answer":"R1 (base resistor) is 1 kOhm, and R2 (base-emitter resistor) is 10 kOhm."},{"question":"Is BCR573E6433HTMA1 compatible with standard SOT-23 footprint?","answer":"Yes. The package is SOT-23-3 (also listed as TO-236-3, SC-59, SOT-23-3), which is the standard three-lead SOT-23 footprint used across the industry."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BCR573E6433HTMA1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BCR573E6433HTMA1 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}}