{"product_id":"20pcs-smd-bjt-transistors-mmst4403-mmst5401-mmst2907a-sot23","title":"20pcs SMD BJT Transistors – MMST4403 MMST5401 MMST2907A SOT-23","description":"\u003ch2\u003e20-Piece SMD BJT Transistor Assortment – General Purpose SOT-23 Package\u003c\/h2\u003e\n\u003cp\u003eKeep your electronics projects running smoothly with this convenient 20-piece pack of surface-mount BJT (Bipolar Junction Transistor) components. Each pack covers a range of popular MMST-series and MMSTA-series part numbers, making it ideal for prototyping, circuit repair, and general-purpose electronics work.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eCompatible Part Numbers Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMMST4403-7-F\u003c\/li\u003e\n  \u003cli\u003eMMST5401-7-F\u003c\/li\u003e\n  \u003cli\u003eMMST2907A-7-F\u003c\/li\u003e\n  \u003cli\u003eMMST5401Q-7-F\u003c\/li\u003e\n  \u003cli\u003eMMST4401-7-F\u003c\/li\u003e\n  \u003cli\u003eMMSTA64-7-F\u003c\/li\u003e\n  \u003cli\u003eMMSTA55-7-F\u003c\/li\u003e\n  \u003cli\u003eMMST5551-7-F\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e SOT-23 surface-mount (SMD) – compact and PCB-friendly\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransistor Type:\u003c\/strong\u003e Bipolar Junction Transistor (BJT) – NPN \u0026amp; PNP variants included\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e General purpose switching and amplification applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 20 pieces per order\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Concern Chemicals:\u003c\/strong\u003e None\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustomized:\u003c\/strong\u003e Yes – available in specific part numbers as listed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eWhether you're an electronics hobbyist, a PCB designer, or a repair technician, having a reliable supply of SMD BJT transistors on hand saves time and keeps your workflow uninterrupted. These components are well-suited for low-signal amplification, logic-level switching, and a wide range of digital and analog circuit designs.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You Might Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is a BJT SMD transistor and what is it used for?\u003c\/h4\u003e\n\u003cp\u003eA: A BJT (Bipolar Junction Transistor) in an SMD (Surface-Mount Device) package is a compact electronic component used for switching and amplifying electrical signals on printed circuit boards. These MMST-series transistors in SOT-23 packages are widely used in consumer electronics, signal processing, and general-purpose circuit design.\u003c\/p\u003e\n\u003ch4\u003eQ: How many pieces are included and which part numbers are in this pack?\u003c\/h4\u003e\n\u003cp\u003eA: Each order includes 20 pieces total. The pack covers these popular part numbers: MMST4403-7-F, MMST5401-7-F, MMST2907A-7-F, MMST5401Q-7-F, MMST4401-7-F, MMSTA64-7-F, MMSTA55-7-F, and MMST5551-7-F — a versatile assortment of NPN and PNP BJT transistors.\u003c\/p\u003e\n\u003ch4\u003eQ: Are these components RoHS compliant or free from high-concern chemicals?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, according to the product specifications, there are no high-concern chemicals associated with these components, making them suitable for standard electronics assembly and repair work.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is a BJT SMD transistor and what is it used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A BJT (Bipolar Junction Transistor) in an SMD (Surface-Mount Device) package is a compact electronic component used for switching and amplifying electrical signals on printed circuit boards. 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The pack covers these popular part numbers: MMST4403-7-F, MMST5401-7-F, MMST2907A-7-F, MMST5401Q-7-F, MMST4401-7-F, MMSTA64-7-F, MMSTA55-7-F, and MMST5551-7-F — a versatile assortment of NPN and PNP BJT transistors.\"}}, {\"@type\": \"Question\", \"name\": \"Are these components RoHS compliant or free from high-concern chemicals?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, according to the product specifications, there are no high-concern chemicals associated with these components, making them suitable for standard electronics assembly and repair work.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"20pcs SMD BJT Transistors – MMST4403 MMST5401 MMST2907A SOT-23\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/products\/20pcs-smd-bjt-transistors-mmst4403-mmst5401-mmst2907a-sot23\"}]}\u003c\/script\u003e","brand":"Axl","offers":[{"title":"MMST5401-7-F","offer_id":44167250509911,"sku":"5:200004763#MMST5401-7-F","price":9.04,"currency_code":"USD","in_stock":true},{"title":"MMST2907A-7-F","offer_id":44167250542679,"sku":"5:200004182#MMST2907A-7-F","price":9.04,"currency_code":"USD","in_stock":true},{"title":"MMST4403-7-F","offer_id":44167250575447,"sku":"5:144170022#MMST4403-7-F","price":9.04,"currency_code":"USD","in_stock":true},{"title":"MMST5551-7-F","offer_id":44167250608215,"sku":"5:202295806#MMST5551-7-F","price":9.04,"currency_code":"USD","in_stock":true},{"title":"MMSTA64-7-F","offer_id":44167250640983,"sku":"5:100014066#MMSTA64-7-F","price":9.04,"currency_code":"USD","in_stock":true},{"title":"MMSTA55-7-F","offer_id":44167250673751,"sku":"5:202295807#MMSTA55-7-F","price":9.04,"currency_code":"USD","in_stock":true},{"title":"MMST5401Q-7-F","offer_id":44167250706519,"sku":"5:4#MMST5401Q-7-F","price":9.04,"currency_code":"USD","in_stock":true},{"title":"MMST4401-7-F","offer_id":44167250739287,"sku":"5:200004183#MMST4401-7-F","price":9.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/6008\/7383\/files\/Se43a9ed5046d4dfe83e7b77b56e70731p.webp?v=1786760110","url":"https:\/\/axlcustomersupport.com\/products\/20pcs-smd-bjt-transistors-mmst4403-mmst5401-mmst2907a-sot23","provider":"Axl","version":"1.0","type":"link"}