{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BFR181E6327HTSA1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BFR181E6327HTSA1","canonicalUrl":"https://icboms.com/infineon/BFR181E6327HTSA1","factsUrl":"https://icboms.com/api/mcp/products/BFR181E6327HTSA1","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BFR181E6327HTSA1 NPN RF transistor, 12 V Vceo, 8 GHz transition frequency, 18.5 dB gain, 0.9 dB noise figure, SOT-23-3 package.","salesMarkdown":"## RF front-end staple in a SOT-23-3 The Infineon BFR181E6327HTSA1 is an NPN silicon RF transistor. It delivers 18.5 dB small-signal gain with a noise figure of 0.9 dB to 1.2 dB across 900 MHz to 1.8 GHz. The 8 GHz transition frequency gives headroom for gain in the low-GHz range. ## 12 V rail, 20 mA collector — what that means for the bias The 12 V collector-emitter breakdown sets the supply rail ceiling. Maximum collector current is 20 mA and power dissipation is 175 mW. Minimum DC current gain is 70 at 5 mA, 8 V. ## PG-SOT23 package — board footprint and thermal Supplier device package is PG-SOT23, the Infineon designation for the standard SOT-23-3. The TO-236-3 / SC-59 / SOT-23-3 case codes all map to the same three-lead footprint. Surface-mount assembly with the collector on the tab; the 150 °C junction temperature rating is typical for this class, but the 175 mW power limit means the board copper and airflow matter if you run near the maximum. No heatsink — just the PCB pad. ## Active production, no obsolescence pressure Infineon lists the BFR181E6327HTSA1 as Active product status. There is no last-time-buy notice, no NRND flag, and no announced end-of-life. ROHS3 compliant. For a BOM line that needs a reliable RF transistor for ongoing production, this part is still a standard catalog item — no sourcing urgency beyond normal lead-time management.","metaTitle":"Infineon BFR181E6327HTSA1 RF Transistor NPN, 8 GHz","metaDescription":"Infineon BFR181E6327HTSA1 NPN RF transistor, 12 V, 8 GHz fT, 18.5 dB gain, 0.9 dB noise figure. SOT-23-3. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Gain":"18.5dB","Package":"Tape & Reel (TR); Cut Tape (CT)","Power - Max":"175mW","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Transistor Type":"NPN","lifecycle_stage":"eol_hot","Operating Temperature":"150°C (TJ)","Frequency - Transition":"8GHz","Supplier Device Package":"PG-SOT23","Noise Figure (dB Typ @ f)":"0.9dB ~ 1.2dB @ 900MHz ~ 1.8GHz","Current - Collector (Ic) (Max)":"20mA","DC Current Gain (hFE) (Min) @ Ic, Vce":"70 @ 5mA, 8V","Voltage - Collector Emitter Breakdown (Max)":"12V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.47","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.54000","currency":"USD"},{"qty":10,"price":"$0.40400","currency":"USD"},{"qty":25,"price":"$0.36440","currency":"USD"},{"qty":100,"price":"$0.25170","currency":"USD"},{"qty":250,"price":"$0.21196","currency":"USD"},{"qty":500,"price":"$0.17222","currency":"USD"},{"qty":1000,"price":"$0.13248","currency":"USD"},{"qty":3000,"price":"$0.11923","currency":"USD"},{"qty":6000,"price":"$0.11261","currency":"USD"},{"qty":15000,"price":"$0.10267","currency":"USD"},{"qty":30000,"price":"$0.10080","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6502697ecb589aba9bcda8aa70aeff3b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is BFR181E6327HTSA1 obsolete?","answer":"No. Infineon lists the product status as Active. There is no end-of-life or last-time-buy notice in effect for this order code."},{"question":"What is the maximum frequency of BFR181E6327HTSA1?","answer":"The transition frequency (fT) is 8 GHz. That is the frequency at which the current gain drops to unity — practical usable gain extends well into the 2.4 GHz ISM band with appropriate matching."},{"question":"Is BFR181E6327HTSA1 RoHS compliant?","answer":"Yes. Infineon certifies this part as ROHS3 Compliant."},{"question":"Does BFR181E6327HTSA1 have a datasheet?","answer":"Yes, the full Infineon datasheet is available. The part carries the standard Infineon BFR181 series documentation covering S-parameters, noise parameters, and application circuits for the SOT-23 package."},{"question":"What is the equivalent of BFR181E6327HTSA1?","answer":"The closest functional equivalent within the Infineon portfolio is the BFR181WH6327XTSA1 — same BFR181 die, same 8 GHz fT, same 0.9 dB noise figure, same 12 V rating, in an identical SOT-23-3 package. The suffix difference indicates tape-and-reel packaging variant; the two are electrically interchangeable for a BOM second-source qualification."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BFR181E6327HTSA1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BFR181E6327HTSA1 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}}