{"product_id":"t50-2-carbonyl-iron-powder-toroid-core-ferrite-ring-4-5nh","title":"T50-2 Carbonyl Iron Powder Toroid Core 4.5nH\/N² Ferrite Ring","description":"\n\u003ch2\u003eT50-2 Carbonyl Iron Powder Toroid Core\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eT50-2 Carbonyl Iron Powder Toroid Core\u003c\/strong\u003e is a precision-engineered ferrite ring core designed for electronics hobbyists, RF engineers, and DIY builders who demand reliable inductive performance. Built from high-quality carbonyl iron powder, this compact toroid core delivers stable inductance characteristics and excellent magnetic permeability for use in inductors, transformers, filters, and RF circuits.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCore Type:\u003c\/strong\u003e T50-2 Carbonyl Iron Powder Toroid\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter:\u003c\/strong\u003e approx. 12.7 mm (0.50 in)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter:\u003c\/strong\u003e approx. 7.7 mm (0.30 in)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e approx. 4.9 mm (0.19 in)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInductance Coefficient (AL):\u003c\/strong\u003e 4.5 nH\/N²\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMagnetic Permeability:\u003c\/strong\u003e approx. 10 μ₀\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Carbonyl Iron Powder\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Red\/Grey (standard Mix-2 coating)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMix:\u003c\/strong\u003e -2 (suitable for 2–30 MHz RF applications)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose the T50-2 Toroid Core?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStable Inductance:\u003c\/strong\u003e Carbonyl iron powder construction ensures consistent AL values across a wide frequency range, making it ideal for RF and HF circuit design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Core Loss:\u003c\/strong\u003e Excellent efficiency at high frequencies — a go-to choice for QRP radio builders, antenna baluns, and low-pass filters.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Versatile:\u003c\/strong\u003e The small T50 form factor fits neatly into tight PCB layouts and DIY builds without sacrificing performance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRecognizable Color Coding:\u003c\/strong\u003e The standard red\/grey finish immediately identifies the Mix-2 material type, simplifying inventory and assembly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Application Range:\u003c\/strong\u003e Suitable for inductors, power chokes, broadband transformers, EMI filters, and amateur radio projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHF and RF inductor winding (2–30 MHz range)\u003c\/li\u003e\n  \u003cli\u003eQRP amateur radio transmitters and receivers\u003c\/li\u003e\n  \u003cli\u003eLow-pass and band-pass filter construction\u003c\/li\u003e\n  \u003cli\u003eAntenna baluns and ununs\u003c\/li\u003e\n  \u003cli\u003ePower supply chokes and EMI suppression circuits\u003c\/li\u003e\n  \u003cli\u003eDIY electronics and educational lab projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eLearn More About Toroid Cores\u003c\/h3\u003e\n\u003cp\u003eFor a deeper understanding of inductive components and their role in electronics, visit the \u003ca href=\"https:\/\/www.nist.gov\/topics\/electronics\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eNational Institute of Standards and Technology (NIST) Electronics resources\u003c\/a\u003e for standards and technical references used in electronic component design.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the T50-2 Carbonyl Iron Powder Toroid Core used for?\u003c\/h4\u003e\n\u003cp\u003eA: The T50-2 Carbonyl Iron Powder Toroid Core is widely used in RF and HF electronics applications, including inductor winding, broadband transformers, antenna baluns, low-pass filters, and QRP amateur radio builds. Its -2 mix material makes it especially well-suited for the 2–30 MHz frequency range.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What do the T50-2 dimensions and AL value mean?\u003c\/h4\u003e\n\u003cp\u003eA: The \"T50\" designation refers to the toroid's approximate outside diameter of 0.50 inches (12.7 mm). The \"-2\" indicates the Mix-2 carbonyl iron material type (red\/grey color coding). The AL value of 4.5 nH\/N² means that for every turn of wire wound around the core, you add approximately 4.5 nanohenries of inductance squared per turn — essential for calculating the number of turns needed to achieve a target inductance.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How many turns do I need to wind to achieve a specific inductance?\u003c\/h4\u003e\n\u003cp\u003eA: To calculate the number of turns (N), use the formula: \u003cstrong\u003eN = √(L \/ AL)\u003c\/strong\u003e, where L is your target inductance in nanohenries and AL is 4.5 nH\/N². For example, to achieve 100 nH: N = √(100 \/ 4.5) ≈ 4.7, so approximately 5 turns would be needed.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this core suitable for power supply applications?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — the T50-2 can be used in power chokes and EMI filtering circuits, though it is most optimized for RF frequencies in the 2–30 MHz range. For lower-frequency power supply applications or audio frequencies, a higher-permeability mix (such as Mix-26 or Mix-52) may be more appropriate.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the T50-2 Carbonyl Iron Powder Toroid Core used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The T50-2 Carbonyl Iron Powder Toroid Core is widely used in RF and HF electronics applications, including inductor winding, broadband transformers, antenna baluns, low-pass filters, and QRP amateur radio builds. Its -2 mix material makes it especially well-suited for the 2–30 MHz frequency range.\"}}, {\"@type\": \"Question\", \"name\": \"What do the T50-2 dimensions and AL value mean?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The \\\"T50\\\" designation refers to the toroid's approximate outside diameter of 0.50 inches (12.7 mm). The \\\"-2\\\" indicates the Mix-2 carbonyl iron material type (red\/grey color coding). The AL value of 4.5 nH\/N² means that for every turn of wire wound around the core, you add approximately 4.5 nanohenries of inductance squared per turn — essential for calculating the number of turns needed to achieve a target inductance.\"}}, {\"@type\": \"Question\", \"name\": \"How many turns do I need to wind to achieve a specific inductance?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"To calculate the number of turns (N), use the formula: N = √(L \/ AL), where L is your target inductance in nanohenries and AL is 4.5 nH\/N². 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For lower-frequency power supply applications or audio frequencies, a higher-permeability mix (such as Mix-26 or Mix-52) may be more appropriate.\"}}]}\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:\/\/vpggdm-rp.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Craft \u0026 DIY Supplies\", \"item\": \"https:\/\/vpggdm-rp.myshopify.com\/collections\/craft-diy-supplies\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"T50-2 Carbonyl Iron Powder Toroid Core 4.5nH\/N² Ferrite Ring\", \"item\": \"https:\/\/vpggdm-rp.myshopify.com\/products\/t50-2-carbonyl-iron-powder-toroid-core-ferrite-ring-4-5nh\"}]}\u003c\/script\u003e","brand":"Qme","offers":[{"title":"5pcs","offer_id":49622819537110,"sku":"1126:1583#5pcs","price":12.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0827\/5243\/8486\/files\/Sb4666cfbfe61461db0bf874fba349465H.webp?v=1785076982","url":"https:\/\/qmeboost.com\/products\/t50-2-carbonyl-iron-powder-toroid-core-ferrite-ring-4-5nh","provider":"Qme","version":"1.0","type":"link"}