{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BCR166WE6327HTSA1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BCR166WE6327HTSA1","canonicalUrl":"https://icboms.com/infineon/BCR166WE6327HTSA1","factsUrl":"https://icboms.com/api/mcp/products/BCR166WE6327HTSA1","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BCR166WE6327HTSA1 PNP pre-biased transistor, 50 V VCEO, 100 mA IC, 160 MHz fT, built-in R1 4.7 kOhms, R2 47 kOhms, SC-70 SOT-323 package, 250 mW power dissipation.","salesMarkdown":"## What this pre-biased PNP does The Infineon BCR166WE6327HTSA1 is a PNP pre-biased transistor in a SC-70 SOT-323 package, integrating two bias resistors — a 4.7 kOhm base resistor (R1) and a 47 kOhm base-emitter resistor (R2) — so you can drive it directly from a logic output without adding external resistors. It handles collector currents up to 100 mA and a collector-emitter breakdown voltage of 50 V, with a transition frequency of 160 MHz, making it a fit for low-power switching, relay drivers, and interface level shifting on a surface-mount board. Infineon lists the BCR166WE6327HTSA1 as obsolete. ## Key ratings for the switching decision The 50 V VCEO rating gives you headroom for 24 V or 48 V industrial rails. The 100 mA continuous collector current covers small relay coils, LED strings, and logic-level translation. Saturation voltage is 300 mV at 500 µA base drive and 10 mA collector current — low enough to keep dissipation in check for a 250 mW package. The minimum DC current gain of 70 at 5 mA, 5 V ensures consistent on-state performance across temperature.","metaTitle":"BCR166WE6327HTSA1 PNP Pre-Biased Transistor, 50V, 100mA","metaDescription":"Infineon BCR166WE6327HTSA1 PNP pre-biased transistor, 50 V VCEO, 100 mA IC, 160 MHz fT, SC-70 SOT-323 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Series":"-","Packaging":"Tape & Reel (TR)","Part Status":"Obsolete","Power - Max":"250 mW","Manufacturer":"Infineon Technologies","Mounting Type":"Surface Mount","Package / Case":"SC-70, SOT-323","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-SOT323","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":"$0.0500","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ff9460dbb11eebfc33424c0e91bee21f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the R1 and R2 resistor values for BCR166WE6327HTSA1?","answer":"The integrated base resistor R1 is 4.7 kOhms, and the base-emitter resistor R2 is 47 kOhms."},{"question":"What is the exact replacement for BCR166WE6327HTSA1?","answer":"Infineon has not published a direct successor for this specific suffix. The BCR166 base part number covers the family; check current Infineon pre-biased PNP transistors in the SC-70 SOT-323 package for a pin-compatible alternative."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BCR166WE6327HTSA1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BCR166WE6327HTSA1 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}}