{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BCR505E6778HTSA1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BCR505E6778HTSA1","canonicalUrl":"https://icboms.com/infineon/BCR505E6778HTSA1","factsUrl":"https://icboms.com/api/mcp/products/BCR505E6778HTSA1","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BCR505E6778HTSA1 NPN pre-biased transistor, 500 mA collector current, 50 V VCEO, 2.2 kΩ base resistor (R1), 10 kΩ emitter-base resistor (R2), 100 MHz transition frequency, PG-SOT23 package, Tape & Reel.","salesMarkdown":"## Pre-biased NPN with integrated resistor divider The Infineon BCR505E6778HTSA1 is an NPN pre-biased transistor in a SOT-23 package, integrating a 2.2 kOhm base resistor (R1) and a 10 kOhm emitter-base resistor (R2) to form a complete switching stage with minimal external components. Rated for a collector current of 500 mA and a collector-emitter breakdown voltage of 50 V, it suits relay and solenoid drivers, low-power switching loads, and interface circuits where board space is tight. ## Last Buy — secure stock now This part carries a Last Buy lifecycle status, meaning the manufacturer has scheduled end-of-production. Any remaining factory stock is being allocated; once exhausted, the part will not be manufactured again. For a production BOM that depends on this exact pre-biased transistor, the window to secure inventory is closing. ## Switching performance and saturation drive With a minimum DC current gain of 70 at 50 mA collector current and 5 V VCE, and a VCE(sat) of 300 mV at 2.5 mA base current and 50 mA collector current, the BCR505E6778HTSA1 delivers a well-defined saturation voltage for logic-level loads. The 100 MHz transition frequency supports switching applications up to several MHz, though the integrated base resistor limits the base drive current and thus the switching speed in high-current pulses.","metaTitle":"BCR505E6778HTSA1 NPN Pre-Biased Transistor, 500 mA, SOT-23","metaDescription":"Infineon BCR505E6778HTSA1 NPN pre-biased transistor with integrated 2.2 kΩ base and 10 kΩ emitter-base resistors.","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)","Power - Max":"330 mW","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Last Time Buy","Transistor Type":"NPN - Pre-Biased","lifecycle_stage":"eol_hot","Base Product Number":"BCR505","Resistor - Base (R1)":"2.2 kOhms","Frequency - Transition":"100 MHz","Supplier Device Package":"PG-SOT23","Resistor - Emitter Base (R2)":"10 kOhms","Vce Saturation (Max) @ Ib, Ic":"300mV @ 2.5mA, 50mA","Current - Collector (Ic) (Max)":"500 mA","Current - Collector Cutoff (Max)":"100nA (ICBO)","DC Current Gain (hFE) (Min) @ Ic, Vce":"70 @ 50mA, 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/f0026325e7ae516257149f59a76230e8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the exact resistor values (R1 and R2) of BCR505E6778HTSA1?","answer":"The base resistor R1 is 2.2 kOhms, and the emitter-base resistor R2 is 10 kOhms. These integrated resistors set the on-state base current for a given input voltage and provide a defined off-state leakage path."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BCR505E6778HTSA1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BCR505E6778HTSA1 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}}