{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BC 817-25 B5003","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BC-817-25-B5003","canonicalUrl":"https://icboms.com/infineon/BC-817-25-B5003","factsUrl":"https://icboms.com/api/mcp/products/BC%20817-25%20B5003","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BC 817-25 B5003 NPN transistor, 45 V VCEO, 500 mA Ic, 330 mW, hFE 160 min at 100 mA, 170 MHz fT, SOT-23 package.","salesMarkdown":"## NPN transistor, 45 V, 500 mA — SOT-23 general-purpose switch The Infineon BC 817-25 B5003 is an NPN epitaxial silicon transistor in a surface-mount SOT-23 package (PG-SOT23), designed for general-purpose switching and amplification up to 45 V collector-emitter breakdown and 500 mA continuous collector current. With a DC current gain (hFE) of 160 minimum at 100 mA, 1 V, and a transition frequency of 170 MHz, it suits medium-speed switching in power management, relay drivers, and signal preamplifier stages. Maximum power dissipation is 330 mW, and the junction temperature rating reaches 150 °C. ## Obsolete — plan for last-time-buy or cross-reference The BC 817-25 B5003 carries an Obsolete product status. For new designs or production continuity, a pin-compatible replacement within the BC 817 family should be evaluated — the base part number BC 817 covers multiple hFE grades and package variants that may still be active. For existing BOM lines, sourcing through independent distribution or surplus stock is the practical path; we can quote against an RFQ from our multi-source network. ## Key ratings for BOM fit The 45 V VCEO breakdown sets the maximum rail voltage this transistor can block in off-state — suitable for 24 V and 36 V industrial buses with margin. The 500 mA collector current rating covers solenoid, relay, and small motor drive stages; for continuous loads above 300 mA, derate for the 330 mW power limit in the SOT-23 package. Saturation voltage is 700 mV maximum at 50 mA base drive and 500 mA collector current, which matters for low-drop switching efficiency. The 100 nA collector cutoff current ensures negligible leakage in high-impedance or battery-powered circuits.","metaTitle":"BC 817-25 B5003 NPN Transistor, 45 V, 500 mA, SOT-23","metaDescription":"BC 817-25 B5003 NPN transistor: 45 V VCEO, 500 mA Ic, 330 mW, hFE 160 min at 100 mA, 170 MHz fT. RFQ for current pricing and availability.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Infineon Technologies","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Power - Max":"330 mW","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Obsolete","Transistor Type":"NPN","lifecycle_stage":"eol_hot","Base Product Number":"BC 817","Operating Temperature":"150°C(TJ)","Frequency - Transition":"170MHz","Supplier Device Package":"PG-SOT23","Vce Saturation (Max) @ Ib, Ic":"700mV @ 50mA, 500mA","Current - Collector (Ic) (Max)":"500 mA","Current - Collector Cutoff (Max)":"100nA (ICBO)","DC Current Gain (hFE) (Min) @ Ic, Vce":"160 @ 100mA, 1V","Voltage - Collector Emitter Breakdown (Max)":"45 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e1198b7a398bf9fcc31ab9c515acedbd.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is BC 817-25 B5003 obsolete?","answer":"Yes, the BC 817-25 B5003 is listed as Obsolete. Infineon has discontinued production, so new stock is sourced through surplus or independent channels. We can confirm availability and pricing against an RFQ."},{"question":"Where to buy BC 817-25 B5003?","answer":"Submit a request for current pricing and availability — no minimum commitment required."},{"question":"What are the specifications of BC 817-25 B5003?","answer":"NPN transistor in SOT-23 (PG-SOT23), 45 V VCEO, 500 mA Ic, 330 mW power dissipation, hFE 160 min at 100 mA / 1 V, transition frequency 170 MHz, saturation voltage 700 mV max at 50 mA / 500 mA, cutoff current 100 nA, junction temperature 150 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BC-817-25-B5003","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BC-817-25-B5003 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}}