{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MMBT3904LT3XT","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"MMBT3904LT3XT","canonicalUrl":"https://icboms.com/infineon/MMBT3904LT3XT","factsUrl":"https://icboms.com/api/mcp/products/MMBT3904LT3XT","rawCanonicalId":null},"summary":{"shortDescription":"ON Semiconductor MMBT3904LT3XT, NPN general-purpose transistor, 200 mA collector current, 40 V V(BR)CEO, 300 MHz transition frequency, SOT-23-3 package, Tape & Reel.","salesMarkdown":"## Active NPN transistor in a common SOT-23 footprint The MMBT3904LT3XT is an NPN general-purpose transistor rated for 200 mA continuous collector current and 40 V collector-emitter breakdown, with a minimum DC current gain of 100 at 10 mA collector current and 1 V Vce. It comes in the TO-236-3 / SC-59 / SOT-23-3 surface-mount package, supplied on Tape & Reel. The 300 MHz transition frequency makes it usable for small-signal amplification and switching up through VHF, while the 330 mW power dissipation ceiling suits low-to-moderate power stages in compact designs. ## Saturation voltage and gain — what they mean for a driver stage The 50 nA collector cutoff current keeps off-state leakage negligible in battery-powered circuits. The minimum hFE of 100 at 10 mA / 1 V gives enough current gain to switch a 200 mA load from a 2 mA base drive — a standard GPIO pin can handle that directly.","metaTitle":"MMBT3904LT3XT NPN Transistor, 200 mA, 40 V, SOT-23","metaDescription":"MMBT3904LT3XT NPN transistor, 200 mA collector current, 40 V breakdown, 300 MHz fT, SOT-23 package. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","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","Transistor Type":"NPN","lifecycle_stage":"eol_hot","Base Product Number":"MMBT3904","Operating Temperature":"150°C (TJ)","Frequency - Transition":"300MHz","Supplier Device Package":"PG-SOT23","Vce Saturation (Max) @ Ib, Ic":"300mV @ 5mA, 50mA","Current - Collector (Ic) (Max)":"200 mA","Current - Collector Cutoff (Max)":"50nA (ICBO)","DC Current Gain (hFE) (Min) @ Ic, Vce":"100 @ 10mA, 1V","Voltage - Collector Emitter Breakdown (Max)":"40 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3100","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/0ba79fa328324c83a391de47008acca4.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/MMBT3904LT3XT/alternatives.json"},"ai":{"faq":[{"question":"Can I use MMBT3904 instead of MMBT3904LT3XT?","answer":"The base part MMBT3904 is the same transistor die in the same SOT-23 package; the LT3XT suffix indicates a specific tape-and-reel packing option. Electrically they are identical, so MMBT3904 is a direct functional substitute for MMBT3904LT3XT in any circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/MMBT3904LT3XT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/MMBT3904LT3XT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}