{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BC 817-25 E6433","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BC-817-25-E6433","canonicalUrl":"https://icboms.com/infineon/BC-817-25-E6433","factsUrl":"https://icboms.com/api/mcp/products/BC%20817-25%20E6433","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BC 817-25 E6433 NPN transistor, 500 mA Ic, 45 V Vce, 170 MHz fT, hFE 160-400, SOT-23-3 package, 330 mW Pd, Tape & Reel.","salesMarkdown":"## NPN transistor in SOT-23 — 500 mA, 45 V, 170 MHz fT The Infineon BC 817-25 E6433 is a general-purpose NPN bipolar junction transistor in a SOT-23-3 surface-mount package. The 170 MHz transition frequency keeps switching edges clean for sub-1 MHz PWM and audio-band amplification. The \"25\" gain group specifies a DC current gain (hFE) of 160 to 400 at 100 mA, 1 V, which gives consistent drive strength across reels. Saturation voltage is 700 mV maximum at 50 mA base current and 500 mA collector current — a reasonable Vce(sat) for a 500 mA device in this footprint. Maximum power dissipation is 330 mW, so derating is needed above 25 °C ambient if the transistor is used in continuous conduction. ## Obsolete — plan for a last-time buy or second source The BC 817-25 E6433 is marked obsolete by Infineon. ## Package and temperature — SOT-23, 150 °C junction The transistor is supplied in a TO-236-3 / SC-59 / SOT-23-3 package, with the Infineon-specific PG-SOT23 designation. It is surface-mount only, solders to a standard SOT-23 land pattern. The junction temperature rating is 150 °C, which covers most industrial and automotive under-hood environments when derated for power dissipation. The 100 nA collector cutoff current (ICBO) at 25 °C is typical for a small-signal NPN; expect it to rise with temperature, but it stays under a microamp for most bias networks.","metaTitle":"BC 817-25 E6433 NPN Transistor, 500 mA, 45 V, SOT-23","metaDescription":"Infineon BC 817-25 E6433 NPN transistor: 500 mA collector current, 45 V Vce, 170 MHz fT, SOT-23 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","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":"Obsolete","Transistor Type":"NPN","lifecycle_stage":"eol_hot","Base Product Number":"BC 817","Operating Temperature":"150°C (TJ)","Frequency - Transition":"170MHz","Supplier Device Package":"PG-SOT23","Vce Saturation (Max) @ Ib, Ic":"700mV @ 50mA, 500mA","Current - Collector (Ic) (Max)":"500 mA","Current - Collector Cutoff (Max)":"100nA (ICBO)","DC Current Gain (hFE) (Min) @ Ic, Vce":"160 @ 100mA, 1V","Voltage - Collector Emitter Breakdown (Max)":"45 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e1198b7a398bf9fcc31ab9c515acedbd.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BC%20817-25%20E6433/alternatives.json"},"ai":{"faq":[{"question":"Is BC 817-25 E6433 obsolete?","answer":"Yes, Infineon lists the BC 817-25 E6433 as obsolete. There is no official successor from Infineon, but the base BC 817-25 transistor is still available from other manufacturers (e.g., Nexperia, onsemi) in the same SOT-23 package."},{"question":"What are the specifications of BC 817-25 E6433?","answer":"It is an NPN transistor with a maximum collector current of 500 mA, collector-emitter breakdown voltage of 45 V, transition frequency of 170 MHz, DC current gain (hFE) of 160 to 400 at 100 mA / 1 V, saturation voltage of 700 mV max at 50 mA base / 500 mA collector, and maximum power dissipation of 330 mW. It comes in a SOT-23-3 surface-mount package rated for a junction temperature of 150 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BC-817-25-E6433","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BC-817-25-E6433 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T14:36:58.145Z","lastPublished":"2026-07-16T14:36:58.145Z","indexable":true}}