--- title: "Now in Stock: BCM5421SA2KQMG | Broadcom 10/100/1000BASE-T Gigabit Ethernet PHY IC | Brand New, Fully Traceable, and Ready to Ship!" description: Discover the PEB 4262 V V1.1 from Lantiq, a reliable telecom IC for analog telephony applications, now available for fast shipping and fully traceable. image: https://www.componentsense.com/hubfs/BCM5421SA2KQMG_(1)%20(1).png --- [![Component Sens](https://www.componentsense.com/hubfs/complogo.svg "Component Sens")](https://www.componentsense.com/) - [Home](https://www.componentsense.com/) - [About Us](https://www.componentsense.com/experts-in-excess-electronic-components-about-component-sense/) Open the submenu - [Our Mission](https://www.componentsense.com/our-mission/) - [Our Team](https://www.componentsense.com/team-sections/) - [Careers](https://www.componentsense.com/careers/) - [Excess Stock Solutions](https://www.componentsense.com/sell-obsolete-excess-electronic-components/) Open the submenu - [InPlant™](https://www.componentsense.com/sell-excess-electronic-components-inplant/) - [Consignment](https://www.componentsense.com/sell-excess-electronic-components-consignment/) - [Outright Purchase](https://www.componentsense.com/sell-excess-electronic-components-quickly-outright-purchase/) - [Buy Components](https://www.componentsense.com/buy-electronic-components/) Open the submenu - [Buy Online](https://www.componentsense.com/buy-electronic-components-online/) - [BOM Matching Service](https://www.componentsense.com/buy-electronic-components-bom-matching-service/) - [Request a Quote](https://www.componentsense.com/buy-electronic-components-request-a-quote/) - [Resources](https://www.componentsense.com/resources/) Open the submenu - [Newsletter](https://connect.componentsense.com/newsletter-sign-up-form) - [Case Studies](https://connect.componentsense.com/corning-case-study) - [Blog](https://www.componentsense.com/blog) Open the submenu - [Inventory Management](https://www.componentsense.com/blog/tag/inventory-management) - [Sustainability](https://www.componentsense.com/blog/tag/sustainability) - [Procurement & Supply Chain](https://www.componentsense.com/blog/tag/procurement-supply-chain) - [Stock Updates](https://www.componentsense.com/blog/tag/stock-updates) - [Industry Trends](https://www.componentsense.com/blog/tag/industry-trends) - [Brand & Culture](https://www.componentsense.com/blog/tag/brand-culture) - [White Papers](https://connect.componentsense.com/ultimate-guide-to-a-sustainable-supply-chain) - [Contact Us](https://www.componentsense.com/contact-us/) [BUY ONLINE](https://www.componentsense.com/stock/) Search the blog - There are no suggestions because the search field is empty. [![Component Sense](https://www.componentsense.com/hs-fs/hubfs/CS%20Logo.png?width=2000&height=454&name=CS%20Logo.png "Component Sense")](https://www.componentsense.com/) [Stock Updates](https://www.componentsense.com/blog/tag/stock-updates) # Now in Stock: BCM5421SA2KQMG | Broadcom 10/100/1000BASE-T Gigabit Ethernet PHY IC | Brand New, Fully Traceable, and Ready to Ship! ![Ash Arya](https://app.hubspot.com/settings/avatar/a109f367827b13ed7ee07e1cc02292e8) [Ash Arya](https://www.componentsense.com/blog/author/ash-arya) [Visit Component Sense on Twitter](https://x.com/ComponentSense) [Visit Component Sense on Facebook](https://www.facebook.com/componentsense/) [Visit Component Sense on LinkedIn](https://www.linkedin.com/company/component-sense/) ![](https://www.componentsense.com/hubfs/BCM5421SA2KQMG_(1)%20(1).png) The BCM5421SA2KQMG from Broadcom is a 10/100/1000 Ethernet PHY IC designed for high-speed wired networking and communication applications. If you’re working on networking equipment, telecom systems, embedded communication hardware, or Ethernet-enabled devices that need reliable Gigabit Ethernet physical-layer connectivity, this part is a dependable choice. [View the BCM5421SA2KQMG](https://www.componentsense.com/stock/975850/BCM5421SA2KQMG) This device is part of Broadcom’s BCM5421 product family and is described as a fully integrated 10/100/1000BASE-T Gigabit Ethernet transceiver. Here’s what you’re getting with this part: **Key Features of the BCM5421SA2KQMG** **![](https://www.componentsense.com/hs-fs/hubfs/undefined-Jun-05-2026-11-23-30-2878-AM.png?width=244&height=292&name=undefined-Jun-05-2026-11-23-30-2878-AM.png)** **It supports 10/100/1000BASE-T Gigabit Ethernet connectivity.** The BCM5421SA2KQMG supports 10BASE-T, 100BASE-TX, and 1000BASE-T Ethernet, making it suitable for systems that require flexible wired network connectivity across different Ethernet speeds. **It works as a fully integrated Ethernet transceiver.** It is a fully integrated Gigabit Ethernet transceiver that supports physical-layer communication between Ethernet-enabled systems and standard copper cabling. **It supports surface-mount PCB assembly.** The BCM5421SA2KQMG is listed as an SMD IC, making it suitable for compact surface-mount designs in electronics and communication hardware. ### **It is built for networking and communication equipment.** This part is suitable for applications that require dependable Ethernet connectivity, including networking hardware, telecom equipment, embedded systems, and industrial communication devices. **It helps support PB-free and RoHS-compliant manufacturing**. This stock is listed as PB-free, helping support compliance requirements for electronics manufacturers working with RoHS-regulated products. ## **Applications of the BCM5421SA2KQMG** This part is typically used in: - Networking equipment - Ethernet switches - Routers and gateways - Telecom infrastructure - Embedded communication hardware - Industrial Ethernet systems - Network interface cards - Broadband access equipment - Repair and maintenance projects - Legacy system support ### FAQ: Why Source the BCM5421SA2KQMG from Component Sense? Here are the most common questions procurement teams ask when sourcing the Broadcom BCM5421SA2KQMG: ###### Are the components brand new and fully traceable? Yes. All our stock is brand new, unused, and fully traceable back to tier-one OEM or EMS partners. We don’t deal in refurbished parts. ###### How does Component Sense ensure the authenticity of its components? Every component undergoes our inspection process, developed in collaboration with leading Scottish universities. We guarantee form, fit, and function, and include a 12-month warranty. ###### Do you stock other components? We hold over $1 billion worth of excess and obsolete inventory, updated regularly so you can source parts quickly and keep production moving. Our inventory is available for browsing **[here.](https://www.componentsense.com/buy-electronic-components-online/) **   ###### How quickly can you ship the BCM5421SA2KQMG? This part ships from the UK, with same-day dispatch available. We also aim to provide quotes within an hour and maintain an on-time delivery rate of 95%+.   ###### Does Component Sense support sustainable purchasing? Yes. By redistributing excess components, we help reduce electronic waste and extend component lifespans. Also, we plant two trees to support global reforestation efforts. ###### Why should I source the BCM5421SA2KQMG from Component Sense? Because you get traceable, reliable components quickly, without the usual sourcing risk. When you need the BCM5421SA2KQMG, we make the process seamless: we only carry trusted inventory, we guarantee fast delivery, and by purchasing brand-new excess parts, you are sourcing sustainably.   [Purchase the BCM5421SA2KQMG](https://www.componentsense.com/stock/975850/BCM5421SA2KQMG)   [![Component Sense](https://www.componentsense.com/hubfs/complogo.svg)](https://www.componentsense.com/) Save money. Save tomorrow. Follow us on LinkedIn Follow us on Instagram Follow us on X Follow us on Facebook Follow us on YouTube ### Information - [FAQ](https://www.componentsense.com/f-a-q/) - [Careers](https://www.componentsense.com/careers/) - [Privacy Policy](https://www.componentsense.com/privacy/) - [Cookie Policy](https://www.componentsense.com/cookie-policy/) - [Refund policy](https://www.componentsense.com/refund-policy/) - [Quality policy](https://www.componentsense.com/quality-policy/) - [Terms and Conditions](https://www.componentsense.com/terms-and-conditions/) ### Buy Components - [Buy Online](https://www.componentsense.com/buy-electronic-components-online/) - [BOM Matching](https://www.componentsense.com/buy-electronic-components-bom-matching-service/) - [Request a Quote](https://www.componentsense.com/buy-electronic-components-request-a-quote/) ### Services We Offer - [InPlant™](https://www.componentsense.com/sell-excess-electronic-components-inplant/) - [Consignment](https://www.componentsense.com/sell-excess-electronic-components-consignment/) - [Outright Purchase](https://www.componentsense.com/sell-excess-electronic-components-quickly-outright-purchase/) ### Newsletter ![AS 9120 certification badge](https://www.componentsense.com/hubfs/9120.png) ![ASACB certification badge](https://www.componentsense.com/hubfs/asacb.png) ![ISO 9001 certification badge](https://www.componentsense.com/hubfs/90001-1.png) **VAT:** GB 975 3633 86 **EORI:** GB975363386000 **Registration:** SC360076 Unit 1, R6 Queen Anne Drive Newbridge Edinburgh EH28 8LH United Kingdom ©2026 Component Sense ![](https://px.ads.linkedin.com/collect/?pid=6322673&fmt=gif) ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Ash Arya", "url" : "https://www.componentsense.com/blog/author/ash-arya" }, "dateModified" : "2026-06-22T12:00:12.517Z", "datePublished" : "2026-06-05T11:29:51.000Z", "headline" : "Now in Stock: BCM5421SA2KQMG | Broadcom 10/100/1000BASE-T Gigabit Ethernet PHY IC | Brand New, Fully Traceable, and Ready to Ship!", "image" : [ "https://www.componentsense.com/hubfs/BCM5421SA2KQMG_(1)%20(1).png" ], "mainEntityOfPage" : { "@id" : "https://www.componentsense.com/blog/bcm5421sa2kqmg", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://www.componentsense.com/hubfs/CS%20Logo-1.png" }, "name" : "Component Sense" } } ``` ```json { "@context" : "https://schema.org", "@id" : "https://www.componentsense.com/#organization", "@type" : "Organization", "address" : { "@type" : "PostalAddress", "addressCountry" : "GB", "addressLocality" : "Newbridge", "addressRegion" : "Edinburgh", "postalCode" : "EH28 8LH", "streetAddress" : "Unit 1, R6 Queen Anne Drive" }, "contactPoint" : [ { "@type" : "ContactPoint", "areaServed" : "GB", "contactType" : "sales", "telephone" : "+44 345 643 2003" }, { "@type" : "ContactPoint", "areaServed" : "US", "contactType" : "sales", "telephone" : "+1 800 792 9604" }, { "@type" : "ContactPoint", "areaServed" : "Worldwide", "contactType" : "sales", "telephone" : "+44 1506 668 505" } ], "logo" : "https://www.componentsense.com/hubfs/complogo.svg", "name" : "Component Sense", "sameAs" : [ "https://www.facebook.com/componentsense", "https://x.com/componentsense", "https://www.linkedin.com/company/component-sense/", "https://www.instagram.com/componentsense/", "https://www.youtube.com/@ComponentSense/", "https://find-and-update.company-information.service.gov.uk/company/SC360076", "https://www.wikidata.org/wiki/Q135899466", "https://www.greatplacetowork.co.uk/certified-company/1574045" ], "telephone" : "+44 345 643 2003", "url" : "https://www.componentsense.com/", "vatID" : "GB975363386" } ```