{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BC 817K-25W E6433","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BC-817K-25W-E6433","canonicalUrl":"https://icboms.com/infineon/BC-817K-25W-E6433","factsUrl":"https://icboms.com/api/mcp/products/BC%20817K-25W%20E6433","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BC 817K-25W E6433 NPN bipolar transistor, 45 V VCEO, 500 mA Ic, 170 MHz fT, 250 mW max, SC-70/SOT-323 package, Tape & Reel.","salesMarkdown":"## General-purpose NPN in a tiny SOT-323 The BC 817K-25W E6433: The Infineon BC 817K-25W is a general-purpose NPN bipolar transistor in a surface-mount SC-70 (SOT-323) package. It handles a collector current up to 500 mA and a collector-emitter breakdown voltage of 45 V. ## 250 mW power — thermal budget in a small package With a maximum power dissipation of 250 mW in the SOT-323 body, this transistor is not meant for continuous high-current loads. At 500 mA the Vce saturation is 700 mV, so the on-state power at full current is 350 mW — above the package limit. Practical continuous collector current is derated to roughly 350 mA at 25 °C ambient, and less at elevated temperatures. Use it for switching loads like relay coils, LED drivers, or signal-level amplification where the average dissipation stays under the ceiling. The BC 817K-25W is listed as Obsolete by Infineon. For BOM lines that call this exact order code, supply is limited to existing stock in the independent distribution channel.","metaTitle":"BC 817K-25W E6433 NPN Transistor, 45 V, 500 mA, SOT-323","metaDescription":"BC 817K-25W E6433 NPN bipolar transistor in SC-70/SOT-323. 45 V VCEO, 500 mA Ic, 170 MHz fT, 250 mW max.","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":"250 mW","Mounting Type":"Surface Mount","Package / Case":"SC-70, SOT-323","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-SOT323","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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e1198b7a398bf9fcc31ab9c515acedbd.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BC-817K-25W-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-817K-25W-E6433 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}