{"id":100598,"date":"2026-08-06T09:03:48","date_gmt":"2026-08-06T09:03:48","guid":{"rendered":"https:\/\/optics.carritech.com\/optical-transceivers\/uncategorized\/400g-fr4-qsfddd2km\/"},"modified":"2026-08-06T09:03:52","modified_gmt":"2026-08-06T09:03:52","slug":"400g-fr4-qsfddd2km","status":"publish","type":"product","link":"https:\/\/optics.carritech.com\/es\/optical-transceivers\/optical-transceivers\/qsfp-dd\/400g-qsfp-dd\/400g-fr4-qsfddd2km\/","title":{"rendered":"400G-FR4-QSFDDD2KM"},"content":{"rendered":"<p><strong>Fully compatible Carritech alternative<\/strong><\/p>\n<p>Carritech Optics can offer <strong>CT-400G-QDD-FR4<\/strong> as a fully compatible, high-quality alternative to <strong>Extreme Networks 400G-FR4-QSFDDD2KM<\/strong>. This Carritech alternative is matched against the key optical specifications and can be programmed and tested for your network requirements.<\/p>\n<p><strong>Carritech part number: CT-400G-QDD-FR4<\/strong><\/p>\n<p><strong>400G QSFP-DD FR4 1310NM 2KM<\/strong><\/p>\n<p>400G QSFP-DD FR4 optical transceiver for 400GBASE-FR4 Ethernet, supporting up to 2 km transmission over single-mode fiber using CWDM4 EML transmitters, duplex LC interface, and integrated DDM.<\/p>","protected":false},"excerpt":{"rendered":"<p>Carritech Optics can offer a fully compatible, high-quality alternative to <strong>Extreme Networks 400G-FR4-QSFDDD2KM<\/strong>.<\/p>\n<p><strong>Carritech part number: CT-400G-QDD-FR4<\/strong><\/p>\n<ul>\n<li data-start=\"2093\" data-end=\"2149\"><strong data-start=\"2093\" data-end=\"2130\">Hot-pluggable QSFP-DD form factor<\/strong> con LC d\u00faplex.<\/li>\n<li data-start=\"2152\" data-end=\"2216\"><strong data-start=\"2152\" data-end=\"2193\">CWDM4 EML transmitters (1271\u20131331 nm)<\/strong> with PIN receivers.<\/li>\n<li data-start=\"2219\" data-end=\"2259\"><strong data-start=\"2219\" data-end=\"2239\">Up to 2 km reach<\/strong> on standard SMF.<\/li>\n<li data-start=\"2262\" data-end=\"2316\"><strong data-start=\"2262\" data-end=\"2296\">Power-efficient design (~12 W)<\/strong> for 400G optics.<\/li>\n<li data-start=\"2319\" data-end=\"2363\"><strong data-start=\"2319\" data-end=\"2360\">Integrated digital diagnostics (DDM).<\/strong><\/li>\n<li data-start=\"2366\" data-end=\"2423\"><strong data-start=\"2366\" data-end=\"2420\">Fully compliant with IEEE 802.3cu and QSFP-DD MSA.<\/strong><\/li>\n<\/ul>","protected":false},"featured_media":4514,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[1711],"product_cat":[96,17,91],"product_tag":[93,94,215],"class_list":["post-100598","product","type-product","status-publish","has-post-thumbnail","product_brand-extreme-networks","product_cat-400g-qsfp-dd","product_cat-optical-transceivers","product_cat-qsfp-dd","product_tag-200g-400g-qsfp-dd","product_tag-800g-osfp","product_tag-exc","first","instock","shipping-taxable","purchasable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.2 (Yoast SEO v28.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>400G-FR4-QSFDDD2KM Compatible QSFP-DD 400G-QSFP transceiver | Carritech Optics<\/title>\n<meta name=\"description\" content=\"Fully compatible alternative to Extreme Networks 400G-FR4-QSFDDD2KM. 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