{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BCR158","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BCR158","canonicalUrl":"https://icboms.com/infineon/BCR158","factsUrl":"https://icboms.com/api/mcp/products/BCR158","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BCR158 PNP pre-biased digital transistor, 50 V VCEO, 100 mA Ic, 2.2 kΩ base resistor (R1), 47 kΩ base-emitter resistor (R2), 200 MHz transition frequency, SC-70 SOT-323 package, surface mount.","salesMarkdown":"## PNP pre-biased digital transistor — 50 V, 100 mA, integrated bias resistors The Infineon BCR158 is a PNP pre-biased digital transistor (sometimes called a resistor-equipped transistor or RET) in a SC-70 (SOT-323) surface-mount package. It integrates a 2.2 kΩ base resistor (R1) and a 47 kΩ base-emitter resistor (R2), which eliminates the need for external bias components in low-current switching and driver applications. The transistor is rated for a collector-emitter breakdown voltage of 50 V and a maximum continuous collector current of 100 mA. ## Low Vce(sat) — 300 mV at 10 mA The BCR158 specifies a maximum Vce(sat) of 300 mV at a base current of 500 µA and a collector current of 10 mA. This low saturation voltage keeps conduction losses minimal when driving loads such as relays, LEDs, or logic inputs from a microcontroller GPIO. The DC current gain (hFE) is a minimum of 70 at 5 mA collector current and 5 V Vce, which provides consistent drive strength across production lots. For procurement, this translates to standard lead times through the distribution channel and no urgency to qualify a substitute.","metaTitle":"Infineon BCR158 PNP Pre-Biased Transistor, 50 V, 100 mA","metaDescription":"Infineon BCR158 PNP pre-biased digital transistor. 50 V VCEO, 100 mA Ic, 2.2 kΩ base resistor, 47 kΩ base-emitter resistor. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Infineon Technologies","Series":"-","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)":"2.2 kOhms","Frequency - Transition":"200 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/3120d581596426422fb2c895e63932e0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the equivalent of BCR158?","answer":"There is no single pin-compatible equivalent listed in the official cross-reference for the BCR158. Many PNP pre-biased transistors in the same SC-70 footprint use different internal resistor values. The closest functional match within the Infineon BCR series would share the same R1/R2 ratio (2.2 kΩ / 47 kΩ) and package, but no specific alternate order code is recorded. For a drop-in replacement, verify the resistor divider ratio and pinout from the respective datasheet."},{"question":"What is BCR158's listed power dissipation?","answer":"The maximum power dissipation for the BCR158 is 250 mW. This limits the continuous collector current and ambient temperature combination; for reliable operation, derate according to the thermal resistance of the SC-70 package in the target PCB layout."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BCR158","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BCR158 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}}