{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BCR166E6327HTSA1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BCR166E6327HTSA1","canonicalUrl":"https://icboms.com/infineon/BCR166E6327HTSA1","factsUrl":"https://icboms.com/api/mcp/products/BCR166E6327HTSA1","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BCR166E6327HTSA1 PNP pre-biased transistor, 50 V collector-emitter breakdown, 100 mA collector current, 4.7 kOhms base resistor, 47 kOhms emitter-base resistor, 160 MHz transition frequency, SOT-23-3 package, 200 mW power dissipation.","salesMarkdown":"## Pre-biased PNP — what the integrated resistors mean The Infineon BCR166E6327HTSA1 is a PNP pre-biased transistor — often called a digital transistor — that integrates the bias resistor network directly into the package. The base resistor (R1) is 4.7 kOhms and the emitter-base resistor (R2) is 47 kOhms, which sets a fixed input threshold and eliminates two external resistors from the BOM. This is a surface-mount device in the TO-236-3 / SC-59 / SOT-23-3 footprint, supplied as PG-SOT23. ## 50 V, 100 mA — where it fits Collector-emitter breakdown is rated at 50 V, with a maximum collector current of 100 mA. Saturation voltage is 300 mV at 500 µA base current and 10 mA collector current, so conduction losses stay low in the on-state. DC current gain (hFE) is a minimum of 70 at 5 mA collector current and 5 V VCE. ## 160 MHz transition frequency — switching speed With a transition frequency of 160 MHz, this transistor handles PWM switching well into the hundreds of kilohertz, making it suitable for switched loads in power management or signal conditioning paths. The 100 nA maximum collector cutoff current (ICBO) keeps leakage negligible at room temperature. ## Last Buy — sourcing this part The BCR166E6327HTSA1 carries a Last Buy lifecycle status. That means Infineon has scheduled this part for discontinuation, and the final window for placing orders through the factory channel is closing. The base product number is BCR166, so check for any remaining factory inventory or distributor stock before committing a long-run build.","metaTitle":"Infineon BCR166E6327HTSA1 PNP Pre-Biased Transistor, 50 V","metaDescription":"Infineon BCR166E6327HTSA1 PNP pre-biased digital transistor, 50 V VCEO, 100 mA Ic, 4.7 kΩ / 47 kΩ integrated resistors, 160 MHz fT, SOT-23-3.","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); Cut Tape (CT)","Power - Max":"200 mW","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Not For New Designs","Transistor Type":"PNP - Pre-Biased","lifecycle_stage":"eol_hot","Base Product Number":"BCR166","Resistor - Base (R1)":"4.7 kOhms","Frequency - Transition":"160 MHz","Supplier Device Package":"PG-SOT23","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":"$0.0474","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ff9460dbb11eebfc33424c0e91bee21f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can I use a standard PNP transistor to replace BCR166E6327HTSA1?","answer":"Not as a direct drop-in. A standard PNP transistor lacks the integrated 4.7 kOhms base resistor and 47 kOhms emitter-base resistor, so you would need to add those externally. That changes the footprint and BOM. If board space and component count are flexible, a standard PNP like a BC857 or similar with external resistors could work, but the pre-biased design is the reason this part exists."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BCR166E6327HTSA1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BCR166E6327HTSA1 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}}