{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BC817K25WE6327HTSA1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BC817K25WE6327HTSA1","canonicalUrl":"https://icboms.com/infineon/BC817K25WE6327HTSA1","factsUrl":"https://icboms.com/api/mcp/products/BC817K25WE6327HTSA1","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BC817K25WE6327HTSA1 NPN general-purpose transistor, 45 V Vceo, 500 mA Ic, 170 MHz fT, hFE 160 at 100 mA, 250 mW, SC-70 SOT-323 package.","salesMarkdown":"The Infineon BC817K25WE6327HTSA1 is a general-purpose NPN bipolar junction transistor in the compact SC-70 (SOT-323) surface-mount package. It is designed for low-to-medium current switching and amplification tasks where board space is tight. With a 45 V collector-emitter breakdown voltage and a 500 mA continuous collector current rating, it can handle common 12 V and 24 V rail switching, relay and solenoid drivers, and signal-level preamplifier stages. The 170 MHz transition frequency means it can switch cleanly well into the low VHF range, suitable for DC-DC converter gate drive buffers or high-speed logic level translation. The 45 V collector-emitter breakdown voltage (Vceo) gives you comfortable headroom on a 24 V supply rail, and the 500 mA continuous collector current (Ic) can drive a small relay, a medium-sized LED string, or the base of a larger power transistor. The DC current gain (hFE) is specified at a minimum of 160 when the collector is carrying 100 mA with 1 V across it — that means a base current of just over 600 µA can switch 100 mA, which is easy for a microcontroller GPIO or a 3.3 V logic output to source. The saturation voltage is 700 mV maximum at 50 mA base drive into 500 mA load, so the transistor will not waste much voltage when fully turned on. ## Obsolete — sourcing reality for BC817K25WE6327HTSA1 This exact suffix variant (BC817K25WE6327HTSA1) is listed as obsolete by Infineon.","metaTitle":"Infineon BC817K25WE6327HTSA1 NPN Transistor, 45V, 500mA","metaDescription":"Infineon BC817K25WE6327HTSA1 NPN transistor. 45 V Vceo, 500 mA Ic, 170 MHz fT, hFE 160. SC-70 SOT-323 package. Obsolete.","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":"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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e1198b7a398bf9fcc31ab9c515acedbd.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the replacement for BC817K25WE6327HTSA1?","answer":"Infineon does not list a direct successor order code for this obsolete variant. The closest functional replacement is another BC817 family member in the SC-70 (SOT-323) package with a similar gain group, such as the BC817K-25 or BC817K-40 series, but verify the exact hFE range and suffix against your design's requirements. For a pin-compatible alternative from another manufacturer, the ON Semiconductor BC817-25LT1G in SOT-23 is a common cross, though the package is larger."},{"question":"What are the specifications of BC817K25WE6327HTSA1?","answer":"It is an NPN transistor with a 45 V Vceo breakdown, 500 mA continuous collector current, 250 mW maximum power dissipation, a minimum DC current gain (hFE) of 160 at 100 mA, a transition frequency of 170 MHz, and a saturation voltage of 700 mV at 500 mA."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BC817K25WE6327HTSA1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BC817K25WE6327HTSA1 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}}