{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BC817K25WH6433XTMA1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BC817K25WH6433XTMA1","canonicalUrl":"https://icboms.com/infineon/BC817K25WH6433XTMA1","factsUrl":"https://icboms.com/api/mcp/products/BC817K25WH6433XTMA1","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BC817K25WH6433XTMA1 NPN transistor, 45 V Vceo, 500 mA Ic, 170 MHz fT, hFE 160 min at 100 mA, 250 mW, SC-70/SOT-323, Surface Mount.","salesMarkdown":"## 45 V, 500 mA NPN in SOT-323 — general-purpose switching transistor The Infineon BC817K25WH6433XTMA1 is a 45 V, 500 mA NPN epitaxial silicon transistor in a SC-70/SOT-323 surface-mount package. It is designed for general-purpose switching and amplification in low-power circuits, with a transition frequency of 170 MHz and a DC current gain (hFE) of 160 minimum at 100 mA collector current. That means the manufacturer has announced end-of-life and the final production window is closing. For any active BOM line using this transistor, the procurement decision is immediate: place a last-time-buy quantity to cover remaining production, or qualify a replacement. The 45 V collector-emitter breakdown voltage gives headroom on 24 V industrial rails and 12 V automotive supplies, but does not leave margin for 48 V systems. The 500 mA continuous collector current handles relay coils, LED drivers, and small solenoid loads — derate for ambient temperature above 25 °C. The 250 mW power dissipation in the SOT-323 package limits continuous current at higher voltages; check the thermal derating curve for your operating point.","metaTitle":"BC817K25WH6433XTMA1 NPN Transistor, 45 V, 500 mA, 170 MHz","metaDescription":"BC817K25WH6433XTMA1 NPN transistor: 45 V Vceo, 500 mA Ic, 170 MHz fT, hFE 160 min at 100 mA. SC-70/SOT-323 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Last Buy","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":"Not For New Designs","Transistor Type":"NPN","lifecycle_stage":"eol_hot","Base Product Number":"BC817","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":"$0.0585","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e1198b7a398bf9fcc31ab9c515acedbd.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BC817K25WH6433XTMA1/alternatives.json"},"ai":{"faq":[{"question":"Is BC817K25WH6433XTMA1 obsolete or still available?","answer":"BC817K25WH6433XTMA1 is in Last Buy status — the manufacturer has announced end-of-life and the final production window is closing. It is not yet fully discontinued, but the procurement window is limited. Plan a last-time-buy or qualify a replacement."},{"question":"What is the replacement for BC817K25WH6433XTMA1?","answer":"The base product number is BC817, and Infineon continues to produce other BC817 variants in SOT-323. For a pin-compatible alternative, evaluate other BC817K-series transistors with the same package and similar hFE grouping. Confirm the specific gain bin and package suffix against your BOM."},{"question":"What are the specifications of BC817K25WH6433XTMA1?","answer":"NPN transistor, 45 V Vceo, 500 mA Ic max, 170 MHz transition frequency, hFE 160 min at 100 mA, 250 mW power dissipation, SC-70/SOT-323 surface-mount package, operating junction temperature up to 150 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BC817K25WH6433XTMA1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BC817K25WH6433XTMA1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T14:36:54.069Z","lastPublished":"2026-07-16T14:36:54.069Z","indexable":true}}