{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BC817K16E6433HTMA1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BC817K16E6433HTMA1","canonicalUrl":"https://icboms.com/infineon/BC817K16E6433HTMA1","factsUrl":"https://icboms.com/api/mcp/products/BC817K16E6433HTMA1","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BC817K16E6433HTMA1 NPN transistor, 45 V VCEO, 500 mA Ic, 170 MHz fT, hFE 100 min at 100 mA, SOT-23-3 surface-mount package, Tape & Reel.","salesMarkdown":"## General-purpose NPN in the BC817 family The Infineon BC817K16E6433HTMA1 is a 45 V, 500 mA NPN epitaxial silicon transistor in a SOT-23-3 surface-mount package. It belongs to the BC817 series, a widely used general-purpose switching and amplification transistor family. The '16' in the base number BC817-16 denotes the hFE grouping — this variant guarantees a DC current gain of 100 minimum at 100 mA collector current and 1 V VCE. ## Switching performance at 170 MHz With a transition frequency of 170 MHz, this transistor is fast enough for low-frequency switching regulators, relay and solenoid drivers, and signal amplification into the tens of megahertz. The 500 mW power dissipation limit in the SOT-23 package means you need to keep the junction temperature in check — the device is rated for a maximum junction temperature of 150 °C, so thermal design at continuous currents above 200 mA requires attention to PCB copper area. ## Saturation voltage and drive requirements The VCE(sat) is specified at 700 mV maximum with a base current of 50 mA driving 500 mA collector current. That's a forced beta of 10, typical for saturating a switching transistor. For lower collector currents the saturation voltage drops significantly. The 100 nA maximum collector cutoff current (ICBO) at 25 °C is tight enough for most general-purpose loads, though you'll want to add a base-emitter resistor if the circuit sees elevated temperatures or high-impedance base drive. ## Last Buy — sourcing reality Infineon has placed the BC817K16E6433HTMA1 into Last Buy status, meaning this specific order code is no longer in continuous production and has a final order window. If you have an active BOM line using this exact Infineon code, now is the time to secure lifetime buy quantities or qualify a drop-in replacement. The base product number BC817 is a standard industry type, and multiple manufacturers offer functionally equivalent NPN transistors in SOT-23 — but pin compatibility and hFE binning should be verified against your design's requirements.","metaTitle":"Infineon BC817K16E6433HTMA1 NPN Transistor, 45 V, 500 mA","metaDescription":"Infineon BC817K16E6433HTMA1 NPN transistor in SOT-23 package. 45 V VCEO, 500 mA Ic, 170 MHz fT, hFE 100 min. Request quote.","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":"500 mW","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Not For New Designs","Transistor Type":"NPN","lifecycle_stage":"eol_hot","Base Product Number":"BC817","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":"100 @ 100mA, 1V","Voltage - Collector Emitter Breakdown (Max)":"45 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.0462","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e1198b7a398bf9fcc31ab9c515acedbd.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is BC817K16E6433HTMA1 obsolete?","answer":"Infineon lists this part in Last Buy status — it is not yet discontinued, but the final order window is open. It is no longer in continuous production, so buyers should plan for a lifetime buy or a pin-compatible alternative."},{"question":"What is the replacement for BC817K16E6433HTMA1?","answer":"Infineon does not list a direct successor order code for this specific variant. The base BC817-16 type is a standard industry NPN transistor, and functionally equivalent parts from other manufacturers (e.g., onsemi, Nexperia) in SOT-23 are available — but verify hFE binning, package marking, and saturation voltage against your design before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BC817K16E6433HTMA1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BC817K16E6433HTMA1 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}}