{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BFU520AR","brand":"NXP Semiconductors","brandSlug":"nxp","productSlug":"BFU520AR","canonicalUrl":"https://icboms.com/nxp/BFU520AR","factsUrl":"https://icboms.com/api/mcp/products/BFU520AR","rawCanonicalId":null},"summary":{"shortDescription":"NXP Semiconductors BFU520AR RF NPN transistor, 12V Vceo, 10GHz fT, 18dB gain, 0.7dB NF, AEC-Q101 automotive grade, SOT-23 package.","salesMarkdown":"## RF performance and gain profile The BFU520AR is an NPN RF transistor from NXP Semiconductors, designed for small-signal amplification up to UHF frequencies. Its 10 GHz transition frequency and 18 dB gain make it suitable for low-noise amplifier stages in automotive and industrial RF front-ends. The noise figure of 0.7 dB at 900 MHz positions this transistor for receiver input stages where signal-to-noise ratio is critical. The 12 V collector-emitter breakdown voltage and 30 mA maximum collector current define the small-signal operating envelope, not power amplification. AEC-Q101 qualification confirms the BFU520AR meets automotive-grade stress tests including temperature cycling, humidity bias, and ESD robustness. The -40°C to 150°C junction temperature range covers under-hood and engine-bay environments where ambient temperatures exceed 105°C. ROHS3 compliance with exemption status supports lead-free reflow profiles common in automotive electronics manufacturing. The active lifecycle status means no end-of-life risk for current production designs. ## Package and board integration The SOT-23 (TO-236AB) package is a standard three-lead surface-mount footprint with 0.95 mm lead pitch. The 450 mW maximum power dissipation in this package requires attention to PCB copper area for thermal management — the collector pad is the primary heat path. Surface mount mounting supports automated pick-and-place assembly. The DC current gain of 60 minimum at 5 mA, 8 V provides consistent bias point repeatability across the temperature range.","metaTitle":"NXP BFU520AR RF NPN Transistor, 12V, 10GHz, SOT-23","metaDescription":"NXP BFU520AR RF NPN transistor: 18dB gain, 0.7dB NF at 900MHz, 10GHz fT, AEC-Q101 automotive grade. Active production, ROHS3 compliant. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Gain":"18dB","Grade":"Automotive","Package":"Tape & Reel (TR); Cut Tape (CT)","Power - Max":"450mW","Mounting Type":"Surface Mount","Qualification":"AEC-Q101","Package / Case":"TO-236-3, SC-59, SOT-23-3","Transistor Type":"NPN","lifecycle_stage":"eol_hot","Operating Temperature":"-40°C ~ 150°C (TJ)","Frequency - Transition":"10GHz","Supplier Device Package":"SOT-23 (TO-236AB)","Noise Figure (dB Typ @ f)":"0.7dB @ 900MHz","Current - Collector (Ic) (Max)":"30mA","DC Current Gain (hFE) (Min) @ Ic, Vce":"60 @ 5mA, 8V","Voltage - Collector Emitter Breakdown (Max)":"12V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.62","stockQuantity":19,"priceTiers":[{"qty":1,"price":"$0.62000","currency":"USD"},{"qty":10,"price":"$0.54400","currency":"USD"},{"qty":25,"price":"$0.51120","currency":"USD"},{"qty":100,"price":"$0.41730","currency":"USD"},{"qty":250,"price":"$0.38760","currency":"USD"},{"qty":500,"price":"$0.32986","currency":"USD"},{"qty":1000,"price":"$0.26389","currency":"USD"},{"qty":3000,"price":"$0.23915","currency":"USD"},{"qty":6000,"price":"$0.22266","currency":"USD"},{"qty":15000,"price":"$0.21441","currency":"USD"},{"qty":30000,"price":"$0.20617","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4cdd860eb09dc6bb8f9d55d429da8394.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the gain and noise figure of BFU520AR?","answer":"The BFU520AR provides 18 dB gain with a noise figure of 0.7 dB at 900 MHz. The transition frequency is 10 GHz, supporting amplification up to UHF bands."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/nxp/BFU520AR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/nxp/BFU520AR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}