{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BC817K25E6433HTMA1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BC817K25E6433HTMA1","canonicalUrl":"https://icboms.com/infineon/BC817K25E6433HTMA1","factsUrl":"https://icboms.com/api/mcp/products/BC817K25E6433HTMA1","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BC817K25E6433HTMA1 NPN transistor, SOT-23-3, 500 mA collector current, 45 V VCEO, 170 MHz transition frequency, 160 min hFE at 100 mA, 500 mW power dissipation.","salesMarkdown":"The BC817K25E6433HTMA1 is an NPN epitaxial planar transistor from Infineon in a standard SOT-23-3 surface-mount package (PG-SOT23). The DC current gain (hFE) is specified at a minimum of 160 when measured at 100 mA collector current with 1 V VCE, which gives a predictable beta for designs that need consistent gain in the tens-of-milliamps operating region. The transition frequency of 170 MHz is adequate for audio-band and low-speed switching applications; it is not a high-speed RF part. Maximum power dissipation is 500 mW, and the junction temperature rating goes to 150 °C. ## Last-time-buy — what it means for procurement Infineon has placed the BC817K25E6433HTMA1 into Last Buy status. If you have an active BOM line using this order code, now is the time to secure lifetime buy quantities or qualify a replacement. A pin-compatible replacement would need to match the SOT-23-3 footprint, NPN polarity, 500 mA collector rating, and 45 V VCEO — several general-purpose transistors in the BC817 family share these ratings, but the exact hFE bin may differ.","metaTitle":"BC817K25E6433HTMA1 NPN Transistor, 500 mA, 45 V, SOT-23-3","metaDescription":"BC817K25E6433HTMA1 NPN transistor: 500 mA collector current, 45 V VCEO, hFE 160 min at 100 mA, 170 MHz fT. SOT-23-3 package. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Last Buy","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Infineon Technologies","Series":"-","Package":"Bulk","Power - Max":"500 mW","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Active","Transistor Type":"NPN","lifecycle_stage":"eol_hot","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":"$0.5000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b4e378390df63bd31f55c7981ea55926.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BC817K25E6433HTMA1/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for BC817K25E6433HTMA1?","answer":"No official replacement order code has been published by Infineon. A functionally equivalent NPN transistor in SOT-23-3 with at least 500 mA collector current and 45 V VCEO would be the starting point for a substitute — the hFE bin may not be matched exactly, so verify gain at your operating point."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BC817K25E6433HTMA1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BC817K25E6433HTMA1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T14:25:40.302Z","lastPublished":"2026-07-16T14:25:40.302Z","indexable":true}}