{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BCR523UE6327HTSA1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BCR523UE6327HTSA1","canonicalUrl":"https://icboms.com/infineon/BCR523UE6327HTSA1","factsUrl":"https://icboms.com/api/mcp/products/BCR523UE6327HTSA1","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BCR523UE6327HTSA1 — dual NPN pre-biased transistor, 500mA collector, 50V Vce, 1kΩ base / 10kΩ emitter-base resistors, 100MHz fT, SC-74 (SOT-457), 330mW, last-time-buy phase.","salesMarkdown":"## Dual pre-biased NPN in SC-74 — last-time-buy status The Infineon BCR523UE6327HTSA1 is a dual NPN pre-biased transistor pair in a single SC-74 (SOT-457) surface-mount package. Each transistor integrates a 1kΩ base resistor (R1) and a 10kΩ emitter-base resistor (R2), eliminating the need for external bias resistors in saturated switching circuits. Collector current is rated to 500mA with a collector-emitter breakdown voltage of 50V and a power dissipation ceiling of 330mW. Transition frequency hits 100MHz, and saturation voltage is 300mV max at 2.5mA base, 50mA collector. Typical applications include relay drivers, solenoid drivers, lamp drivers, and general-purpose logic-level load switches where board space is tight. ## Last-time-buy — sourcing window closing Infineon has placed the BCR523UE6327HTSA1 into last-time-buy (LTB) status. This means the final order window is open now; once it closes, the part will no longer be manufactured. For BOM lines that still need this specific dual pre-biased transistor, the window to commit is finite. Buyers should evaluate remaining lifetime demand and secure inventory before the LTB deadline passes. ## Integrated bias resistors simplify the BOM The built-in 1kΩ base resistor and 10kΩ emitter-base resistor per transistor mean this part turns on with a logic-level signal and turns off reliably without external components. That saves two resistors per channel — four total versus a discrete transistor pair — and shrinks the placement count. With a minimum DC current gain (hFE) of 70 at 50mA, 5V, it drives loads like relays and solenoids directly from a microcontroller output.","metaTitle":"Infineon BCR523UE6327HTSA1 dual NPN pre-biased transistor","metaDescription":"Infineon BCR523UE6327HTSA1 dual NPN pre-biased transistor in SC-74. 500mA collector, 50V Vce, 330mW.","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":"330mW","Mounting Type":"Surface Mount","Package / Case":"SC-74, SOT-457","Product Status":"Last Time Buy","Transistor Type":"2 NPN - Pre-Biased (Dual)","lifecycle_stage":"eol_hot","Base Product Number":"BCR523","Resistor - Base (R1)":"1kOhms","Frequency - Transition":"100MHz","Supplier Device Package":"PG-SC74-6","Resistor - Emitter Base (R2)":"10kOhms","Vce Saturation (Max) @ Ib, Ic":"300mV @ 2.5mA, 50mA","Current - Collector (Ic) (Max)":"500mA","Current - Collector Cutoff (Max)":"-","DC Current Gain (hFE) (Min) @ Ic, Vce":"70 @ 50mA, 5V","Voltage - Collector Emitter Breakdown (Max)":"50V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1309","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://www.infineon.com/dgdl/bcr523series.pdf?folderId=db3a30431428a373011440769fd70304&fileId=db3a30431428a3730114407c929c0309","sourceUrl":null},"ai":{"faq":[{"question":"Is BCR523UE6327HTSA1 obsolete?","answer":"Infineon has classified the BCR523UE6327HTSA1 as last-time-buy. It is not yet obsolete, but the final purchase window is active. Once the LTB period ends, it will be discontinued. Buyers should secure remaining stock through independent distribution now."},{"question":"What is the replacement for BCR523UE6327HTSA1?","answer":"A direct pin-compatible replacement from Infineon is not documented. For dual-sourcing or a drop-in alternative, evaluate other dual pre-biased NPN transistors in SC-74 with similar resistor values (1kΩ base, 10kΩ emitter-base) and 500mA/50V ratings — but confirm pinout and electrical compatibility against your design."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BCR523UE6327HTSA1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BCR523UE6327HTSA1 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}}