{"id":5097,"date":"2025-09-12T00:00:00","date_gmt":"2025-09-12T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/products\/10g-sfp-plus-lr-vs-25g-sfp28-lr-1310nm-modules\/"},"modified":"2026-06-22T09:05:47","modified_gmt":"2026-06-22T09:05:47","slug":"10g-sfp-plus-lr-vs-25g-sfp28-lr-1310nm-modules","status":"publish","type":"post","link":"https:\/\/resources.l-p.com\/ru\/products\/10g-sfp-plus-lr-vs-25g-sfp28-lr-1310nm-modules","title":{"rendered":"SFP+ LR vs. SFP28 LR \u2014 Choosing the Right SFP 1310nm Module for 10km Applications"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/1ffb04ce09ed46f8980d1b67f46ef8c6.webp\" alt=\"10G SFP+ LR, 25G SFP28 LR\" class=\"wp-image-5094\" srcset=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/1ffb04ce09ed46f8980d1b67f46ef8c6.webp 1200w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/1ffb04ce09ed46f8980d1b67f46ef8c6-300x178.webp 300w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/1ffb04ce09ed46f8980d1b67f46ef8c6-1024x608.webp 1024w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/1ffb04ce09ed46f8980d1b67f46ef8c6-768x456.webp 768w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/1ffb04ce09ed46f8980d1b67f46ef8c6-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >1. Introduction \u2014 why 10km matters<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A 10km <strong>single-mode fiber (SMF)<\/strong> link is a common requirement for campus backbones, data center interconnects within metro campuses, and many access\/aggregation links. For these scenarios, the two mainstream choices are <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/475586.htm\"><strong>10G SFP+ LR<\/strong><\/a> and <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/476046.htm\"><strong>25G SFP28 LR<\/strong><\/a> 1310nm modules. Picking the right form factor affects bandwidth, power consumption, interoperability, and cost of upgrades. Reliable technical comparisons and product-level checks (e.g., <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm?ca=1487&amp;cv=8306\">LINK-PP\u2019s modules<\/a>) help procurement and network design decisions. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >2. 1310nm 10G SFP+ LR \u2014 overview<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>What it is.<\/strong> The 10G SFP+ LR module implements 10GBASE-LR optics for Ethernet links up to <strong>10km<\/strong> over standard single-mode fiber (G.652). Typical 10G LR modules use a <strong>1310nm DFB<\/strong> laser (for modern vendor designs) and support digital diagnostics (DOM\/DDM). <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Typical specs (typical ranges):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Data rate:<\/strong> 10Gbps.<\/p><\/li><li><p><strong>Wavelength:<\/strong> 1310nm (O-band).<\/p><\/li><li><p><strong>Reach:<\/strong> up to <strong>10km<\/strong> on SMF.<\/p><\/li><li><p><strong>Laser:<\/strong> <a target=\"_blank\" rel=\"\" href=\"https:\/\/resources.l-p.com\/ru\/glossary\/dfb-laser-definition\/\">DFB<\/a> (modern) \u2014 provides narrow linewidth and stable performance for 10G LR.<\/p><\/li><li><p><strong>Power consumption:<\/strong> typically <strong>&lt;1 W<\/strong> for many SFP+ LR modules (vendor dependent). <\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Common use cases:<\/strong> server-to-switch uplinks, aggregation links inside campuses, short DCI (within metro). LINK-PP example: <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/file\/datasheet\/ls-sm3110-10c.pdf\"><strong>LS-SM3110-10C<\/strong><\/a> 10G SFP+ LR (1310nm, \u226410 km). <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >3. 1310nm 25G SFP28 LR \u2014 overview<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>What it is.<\/strong> The 25G SFP28 LR module implements 25GBase-LR optics for single-channel 25 Gb\/s Ethernet over SMF. Like 10G LR, 25G LR modules commonly use a <strong>1310nm DFB<\/strong> transmitter and are specified for <strong>10km<\/strong> reach in LR variants.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Typical specs (typical ranges):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Data rate:<\/strong> 25Gbps (25.78125 Gbps line rate).<\/p><\/li><li><p><strong>Wavelength:<\/strong> 1310nm.<\/p><\/li><li><p><strong>Reach:<\/strong> up to <strong>10km<\/strong> on SMF (25GBase-LR).<\/p><\/li><li><p><strong>Laser:<\/strong> DFB (narrow linewidth required for stable 25G operation).<\/p><\/li><li><p><strong>Power consumption:<\/strong> commonly <strong>~1.0\u20131.5 W<\/strong> depending on vendor and features (DOM, temp grade). <\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Common use cases:<\/strong> leaf-spine upgrades, server NIC uplinks when 25G bandwidth is required, and future-proofing aggregation links. LINK-PP example: <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/file\/datasheet\/ls-sm3125-10c.pdf\"><strong>LS-SM3125-10C<\/strong><\/a> 25G SFP28 LR (1310nm, \u226410km). <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >4. Technical comparison table (concise)<\/h2>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"width: 231px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>Property<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>10G SFP+ LR (1310nm)<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p>25G SFP28 LR (1310nm)<\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>Line rate<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>10Gbps<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>25Gbps<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>Typical wavelength<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1310nm<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>1310nm<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>Reach (SMF, G.652)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u2264 <strong>10km<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>\u2264 <strong>10km<\/strong><\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>Laser type<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>DFB (modern modules)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>DFB<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p><strong>Form factor<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>SFP+ (10Gbps)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>SFP28 (25Gbps)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>Typical power<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>&lt;1 W (varies)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>~1.0\u20131.5 W (varies)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>Backward compatibility<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>N\/A (different lane speeds)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Not directly backward compatible with SFP+ ports<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\" colwidth=\"231\"><p>Typical price<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Lower (per-port)<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Higher (but more bandwidth)<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >5. When to choose 10G SFP+ LR<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Choose <strong>10G SFP+ LR<\/strong> when:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>10 Gbps per link will serve current traffic demands.<\/p><\/li><li><p>You need the lowest per-port capital cost today.<\/p><\/li><li><p>You have legacy SFP+ sockets or optics inventory you want to reuse.<\/p><\/li><li><p>Power\/thermal budget is tight and &lt;1 W optics are preferred.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Use cases: stable enterprise links, some DCI links that do not demand higher throughput. Vendor-verified <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/475586.htm\">LINK-PP LS-SM3110-10C<\/a> is a standard, cost-effective 10G LR option.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >6. When to choose 25G SFP28 LR<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Choose <strong>25G SFP28 LR<\/strong> when:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p>Higher per-server or per-leaf bandwidth is required (e.g., modern NICs at 25G).<\/p><\/li><li><p>You want to future-proof the network to reduce port counts or aggregation layers.<\/p><\/li><li><p>Slightly higher power and cost are acceptable in exchange for a 2.5\u00d7 bandwidth increase.<\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Use cases: greenfield data center upgrades, leaf uplinks for high-throughput servers. <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/476046.htm\">LINK-PP\u2019s LS-SM3125-10C<\/a> provides 25G performance in the SFP28 form factor, suitable for 10km SMF links.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >7. Cost vs future upgrade \u2014 practical guidance<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>Short-term cost sensitivity:<\/strong> 10G SFP+ often has a lower unit price and lower power per port, making it attractive when budgets are tight.<\/p><\/li><li><p><strong>Long-term TCO:<\/strong> If projected traffic growth will require &gt;10 Gbps per link within a short horizon, 25G may reduce switch port counts and layering complexity\u2014saving money long term despite higher optics cost.<\/p><\/li><li><p><strong>Inventory &amp; interoperability:<\/strong> Confirm switch\/router port compatibility. SFP28 ports are not electrically compatible with SFP+ without specific support; verify with vendors or use mixed-speed platforms if needed.<\/p><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1200\" height=\"712\" src=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/28c61dc626bc4808bd999a1af4a3817a.webp\" alt=\"LINK-PP 1310nm SFP Module for 10km\" class=\"wp-image-5095\" srcset=\"https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/28c61dc626bc4808bd999a1af4a3817a.webp 1200w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/28c61dc626bc4808bd999a1af4a3817a-300x178.webp 300w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/28c61dc626bc4808bd999a1af4a3817a-1024x608.webp 1024w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/28c61dc626bc4808bd999a1af4a3817a-768x456.webp 768w, https:\/\/resources.l-p.com\/wp-content\/uploads\/2026\/05\/28c61dc626bc4808bd999a1af4a3817a-18x12.webp 18w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" >8. LINK-PP product recommendations<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p><strong>10G SFP+ LR (1310nm, \u226410 km):<\/strong> <strong>LS-SM3110-10C<\/strong> \u2014 LINK-PP 10GBASE-LR module, DFB transmitter, DOM support, listed for \u226410km SMF. <\/p><\/li><li><p><strong>25G SFP28 LR (1310nm, \u226410 km):<\/strong> <strong>LS-SM3125-10C<\/strong> \u2014 LINK-PP 25GBase-LR SFP28 for 25Gbps up to 10km on SMF, low power design and interoperability claims on the product page. <\/p><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Always validate the LINK-PP datasheet for exact Tx power, Rx sensitivity, and digital diagnostic specifications before final procurement. <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\">LINK-PP lists<\/a> stock\/availability on the product pages and offers technical support for compatibility checks.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" >9. Practical checklist before purchase<\/h2>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p><strong>Confirm required line rate<\/strong> (10G vs. 25G).<\/p><\/li><li><p><strong>Measure physical distance<\/strong> and include the connector\/splice loss margin for 10 km links.<\/p><\/li><li><p><strong>Check switch\/router port type<\/strong> (SFP+ vs. SFP28) and vendor compatibility.<\/p><\/li><li><p><strong>Decide on temperature grade<\/strong> (commercial vs. industrial).<\/p><\/li><li><p><strong>Review datasheet values:<\/strong> Tx power, Rx sensitivity, DOM, laser type, and power consumption.<\/p><\/li><li><p><strong>Ask for samples or interoperability reports<\/strong> from the supplier (LINK-PP offers <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/file\/datasheet\/ls-sm3110-10c.pdf\">datasheets<\/a> and <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/message.htm\">support<\/a>). <\/p><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" >10. Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For 10km single-mode fiber links, both <strong>10G SFP+ LR<\/strong> and <strong>25G SFP28 LR<\/strong> at <strong>1310 nm<\/strong> are established options. Choose 10G when initial cost and low power are priorities; choose 25G when you need higher bandwidth and a more future-ready design. For tested, compatible modules and technical support, consider LINK-PP\u2019s <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/475586.htm\">LS-SM3110-10C<\/a> (10G) and <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/476046.htm\">LS-SM3125-10C<\/a> (25G).<\/p>\n\n\n\n<div><div widgetid=\"923ea2778f9c11f0be050a37e7beaac1\" format=\"embedded\" data-widget-id=\"923ea2778f9c11f0be050a37e7beaac1\" data-mode=\"production.zh\" style=\"display: block;\"><\/div><\/div>\n\n\n\n<script src=\"https:\/\/cdn.mylandingpages.co\/widgets\/platform\/platform.widget.js\" async=\"true\"><\/script>","protected":false},"excerpt":{"rendered":"<p>Compare 10G SFP+ LR and 25G SFP28 LR 1310nm transceivers for 10 km SMF links. Learn differences in throughput, power, laser type, cost and when to upgrade. Explore LINK-PP models.<\/p>","protected":false},"author":1,"featured_media":5096,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[28],"tags":[14,16,26],"class_list":["post-5097","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products","tag-10g-sfp-transceivers","tag-link-pp-25g-sfp28-optical-modules","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resources.l-p.com\/ru\/wp-json\/wp\/v2\/posts\/5097","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resources.l-p.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resources.l-p.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/ru\/wp-json\/wp\/v2\/comments?post=5097"}],"version-history":[{"count":4,"href":"https:\/\/resources.l-p.com\/ru\/wp-json\/wp\/v2\/posts\/5097\/revisions"}],"predecessor-version":[{"id":11375,"href":"https:\/\/resources.l-p.com\/ru\/wp-json\/wp\/v2\/posts\/5097\/revisions\/11375"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resources.l-p.com\/ru\/wp-json\/wp\/v2\/media\/5096"}],"wp:attachment":[{"href":"https:\/\/resources.l-p.com\/ru\/wp-json\/wp\/v2\/media?parent=5097"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resources.l-p.com\/ru\/wp-json\/wp\/v2\/categories?post=5097"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resources.l-p.com\/ru\/wp-json\/wp\/v2\/tags?post=5097"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}