{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BCR191","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BCR191","canonicalUrl":"https://icboms.com/infineon/BCR191","factsUrl":"https://icboms.com/api/mcp/products/BCR191","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BCR191, Automotive AEC-Q101, PNP - Pre-Biased, 50 V VCEO, 100 mA Ic, 200 MHz, 250 mW, SC-70/SOT-323, Surface Mount.","salesMarkdown":"## Automotive-grade pre-biased PNP for load-switching and interface circuits The Infineon BCR191 is a PNP pre-biased transistor — a digital transistor with two 22 kΩ resistors (R1 and R2) integrated into the package. It is qualified to AEC-Q101, making it suitable for automotive environments where reliability screening and extended temperature operation are required. The device switches loads up to 100 mA collector current and blocks up to 50 V, with a transition frequency of 200 MHz, so it handles low-speed switching and level-shifting in ECU, sensor, and actuator interface circuits. ## Built-in bias resistors simplify the BOM The BCR191 integrates a 22 kΩ base resistor (R1) and a 22 kΩ emitter-base resistor (R2), eliminating two external passives per transistor. That saves board space and reduces pick-and-place cost — useful when populating multiple channels on a dense automotive PCB. The pre-biased topology also guarantees a known on/off threshold without trimming, which tightens the spread across temperature and lot. ## Surface-mount SC-70 / SOT-323 package Housed in a SC-70 / SOT-323 package (Infineon code PG-SOT323-3-1), the BCR191 is a three-pin surface-mount device. The small footprint suits space-constrained layouts in engine control modules, body controllers, and sensor modules. Maximum power dissipation is 250 mW — derate according to the thermal resistance of the board copper area when running near the limit.","metaTitle":"Infineon BCR191 PNP Pre-Biased Transistor, AEC-Q101, 200 MHz","metaDescription":"Infineon BCR191 automotive PNP pre-biased transistor in SC-70/SOT-323. 50 V VCEO, 100 mA Ic, 200 MHz ft. AEC-Q101 qualified.","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)":"22 kOhms","Frequency - Transition":"200 MHz","Supplier Device Package":"PG-SOT323-3-1","Resistor - Emitter Base (R2)":"22 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":"50 @ 5mA, 5V","Voltage - Collector Emitter Breakdown (Max)":"50 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.0300","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c55ca156e6cd1afeb387db2d89805618.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is BCR191 suitable for automotive applications?","answer":"Yes. It is intended for use in engine control, body electronics, and sensor interface circuits."},{"question":"What is the direct replacement for BCR191?","answer":"The BCR191 is an active part with no official successor listed. For a pin-compatible alternative within the same Infineon pre-biased transistor family, compare the BCR191's 22 kΩ / 22 kΩ resistor ratio and 100 mA Ic rating against siblings such as the BCR192 (different resistor ratio) — verify the bias conditions match your base drive requirements before substituting."},{"question":"Is BCR191 RoHS compliant?","answer":"The BCR191 is listed with a Bulk package option. Infineon's standard RoHS compliance applies to this part; confirm the specific date-code and lot-specific RoHS declaration with the supplier at time of order."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BCR191","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BCR191 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}}