{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BCR166WE6327","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BCR166WE6327","canonicalUrl":"https://icboms.com/infineon/BCR166WE6327","factsUrl":"https://icboms.com/api/mcp/products/BCR166WE6327","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BCR166WE6327, Automotive AEC-Q101, PNP Pre-Biased Transistor, 100 mA Ic, 50 V Vce, 4.7 kOhms base resistor, 47 kOhms emitter-base resistor, 160 MHz fT, SC-70/SOT-323, Surface Mount.","salesMarkdown":"## Automotive-grade pre-biased PNP for switched loads The Infineon BCR166WE6327 is a PNP pre-biased digital transistor qualified to AEC-Q101 for automotive applications. It integrates a 4.7 kOhms base resistor and a 47 kOhms emitter-base resistor in a single SC-70 / SOT-323 package, reducing external component count for switched-load interfaces like relay drivers, solenoid coils, and logic-level level shifters in engine control units or body electronics. With a 100 mA continuous collector rating and 50 V Vce breakdown, this part handles the common automotive 12 V / 24 V switched loads — lamps, small relays, indicator LEDs — without needing an external base resistor. The 300 mV saturation voltage at 500 µA base / 10 mA collector keeps conduction losses low enough that the 250 mW power limit in the SOT-323 package is rarely the binding constraint in a 50 °C ambient underhood environment. ## 160 MHz fT — switching speed matters The 160 MHz transition frequency is notably high for a pre-biased PNP. It means this transistor can switch cleanly at PWM frequencies well above the audio band — think 20 kHz to 100 kHz solenoid dither or LED dimming — where a standard digital transistor with a lower fT would show degraded rise/fall times and increased switching loss. ## Active lifecycle — no last-time-buy risk The AEC-Q101 qualification also means the wafer fab and assembly line are locked to automotive-grade process controls, which tends to keep the part available longer than a commercial-grade equivalent.","metaTitle":"Infineon BCR166WE6327 PNP Pre-Biased Transistor, AEC-Q101","metaDescription":"Infineon BCR166WE6327 automotive AEC-Q101 PNP pre-biased transistor. 100 mA Ic, 50 V Vce, 4.7 kΩ / 47 kΩ resistors, 160 MHz fT in SC-70/SOT-323.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Infineon Technologies","Series":"Automotive, AEC-Q101","Package":"Bulk","Power - Max":"250 mW","Mounting Type":"Surface Mount","Package / Case":"SC-70, SOT-323","Product Status":"Active","Transistor Type":"PNP - Pre-Biased","lifecycle_stage":"eol_hot","Resistor - Base (R1)":"4.7 kOhms","Frequency - Transition":"160 MHz","Supplier Device Package":"PG-SOT323-3-1","Resistor - Emitter Base (R2)":"47 kOhms","Vce Saturation (Max) @ Ib, Ic":"300mV @ 500µA, 10mA","Current - Collector (Ic) (Max)":"100 mA","Current - Collector Cutoff (Max)":"100nA (ICBO)","DC Current Gain (hFE) (Min) @ Ic, Vce":"70 @ 5mA, 5V","Voltage - Collector Emitter Breakdown (Max)":"50 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2889ffcdee36152e0fc6d0a2f08178a3.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is BCR166WE6327 automotive qualified?","answer":"Yes, it is listed as Automotive, AEC-Q101 qualified, meaning it meets the stress and reliability requirements for automotive-grade applications including underhood and cabin electronics."},{"question":"What is the closest pin-compatible alternative to BCR166WE6327?","answer":"The BCR166W (without the E6327 suffix) is the same die in the same SOT-323 package but without the automotive AEC-Q101 qualification. If the application does not require automotive-grade, the BCR166W is a direct functional replacement. For an automotive-grade cross, stay with the BCR166WE6327."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BCR166WE6327","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BCR166WE6327 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}}