{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BC817K-25WH6327","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BC817K-25WH6327","canonicalUrl":"https://icboms.com/infineon/BC817K-25WH6327","factsUrl":"https://icboms.com/api/mcp/products/BC817K-25WH6327","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BC817K-25WH6327, Automotive NPN transistor, 45 V Vceo, 500 mA Ic, 170 MHz fT, hFE 160-400, PG-SOT323-3-1 package, AEC-Q101 qualified.","salesMarkdown":"## Automotive-grade NPN transistor for 12 V / 24 V switching The Infineon BC817K-25WH6327 is an automotive-qualified NPN epitaxial planar transistor in a PG-SOT323-3-1 surface-mount package. The 45 V Vceo is the maximum voltage the transistor can block between collector and emitter. For a 12 V automotive system, this gives roughly 3× derating against nominal, which is comfortable for suppressing inductive kickback from relays or solenoids without external clamp diodes in many cases. The 500 mA continuous collector current defines the load-driving capacity; at this current the saturation voltage is specified at 700 mV maximum with 50 mA base drive, so base-drive resistor values should be chosen to guarantee at least 50 mA into the base for a 500 mA collector load. The 170 MHz transition frequency is high enough for PWM switching up to several hundred kilohertz, though switching losses will dominate above 100 kHz in a typical gate-drive or DC-DC converter application. The 100 nA maximum collector cutoff current confirms low leakage at high temperature, which matters for circuits that must stay off in standby.","metaTitle":"Infineon BC817K-25WH6327 NPN Transistor, AEC-Q101, 45 V","metaDescription":"Infineon BC817K-25WH6327 automotive-grade NPN transistor. AEC-Q101 qualified, 45 V Vceo, 500 mA Ic, 170 MHz fT, PG-SOT323-3-1. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Infineon Technologies","Grade":"Automotive","Series":"-","Package":"Bulk","Power - Max":"500 mW","Mounting Type":"Surface Mount","Qualification":"AEC-Q101","Package / Case":"SC-70, SOT-323","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"BC817","Operating Temperature":"150°C (TJ)","Frequency - Transition":"170MHz","Supplier Device Package":"PG-SOT323-3-1","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":"$0.0500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b4e378390df63bd31f55c7981ea55926.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BC817K-25WH6327/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to BC817K-25WH6327?","answer":"Within the BC817K series, the BC817K-25WH6327 is the AEC-Q101 qualified variant. A non-automotive commercial-grade BC817-25 in the same SOT-323 package is pin-compatible but lacks the AEC-Q101 qualification and 150°C junction rating. For a direct automotive replacement, stay within the BC817K-25 suffix."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BC817K-25WH6327","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BC817K-25WH6327 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}