{"id":112867,"date":"2026-09-09T01:29:49","date_gmt":"2026-09-09T01:29:49","guid":{"rendered":"https:\/\/geektechsol.com\/index.php\/product\/qsfp-40g-esr4-juniper-networks-40gbase-qsfp-transceiver\/"},"modified":"2026-09-09T01:29:49","modified_gmt":"2026-09-09T01:29:49","slug":"qsfp-40g-esr4-juniper-networks-40gbase-qsfp-transceiver","status":"publish","type":"product","link":"http:\/\/geektechsol.com\/index.php\/product\/qsfp-40g-esr4-juniper-networks-40gbase-qsfp-transceiver\/","title":{"rendered":"QSFP-40G-ESR4 Juniper Networks 40GBase QSFP+ Transceiver"},"content":{"rendered":"<p>QSFP-40G-ESR4 Technical Specifications<\/p>\n<p>Juniper Networks 40GBase QSFP+ Transceiver<\/p>\n<p>40GBASE-ESR Quad Small Form-factor Pluggable Plus (QSFP+).<\/p>\n<p>Standards based 40-Gigabit Ethernet (40GBASE-ESR4).<\/p>\n<p>40 Gbit\/sec line speed.<\/p>\n<p>Operating distance up to 400m on OM4 fibre.<\/p>\n<p>Transmitter wavelength 850nm.<\/p>\n<p>Industry-standard MPO connector.<\/p>\n<p>Multimode Fibre (MMF).<\/p>\n<p>Digital Optical Monitoring (DOM).<\/p>\n<p>Transmitter Optical Characteristics<\/p>\n<p>Center wavelength [nm]: 850 nm<\/p>\n<p>Maximum Tx optical power [dBm]: 0.5 dBm<\/p>\n<p>Minimum Tx optical power [dBm]: -7.6 dBm<\/p>\n<p>Minimum extinction ratio [dB]: 3.0 dB<\/p>\n<p>Receiver Optical Characteristics<\/p>\n<p>Rx sensitivity [dBm]: -11.1 dBm<\/p>\n<p>Overload power [dBm]: 2.4 dBm<\/p>\n","protected":false},"excerpt":{"rendered":"<p>QSFP-40G-ESR4 Overview<\/p>\n<p>Manage your network connections efficiently with the Juniper Networks QSFP+ transceiver. It provides 40GBase-SR4 throughput up to 400m over multi-mode fiber (MMF) at a wavelength of 850nm using a MPO connector. Digital optical monitoring (DOM) support is also present to allow access to real-time operating parameters.<\/p>\n","protected":false},"featured_media":112868,"comment_status":"closed","ping_status":"open","template":"","meta":{"_acf_changed":false},"product_brand":[448],"product_cat":[4260,288],"product_tag":[290,461,796,296],"class_list":["post-112867","product","type-product","status-publish","has-post-thumbnail","product_brand-juniper","product_cat-juniper-transceivers","product_cat-transceivers","product_tag-40-gigabit-ethernet-transceivers","product_tag-digital-optical-monitoring","product_tag-qsfp-plus-transceiver","product_tag-transceiver","first","instock","shipping-taxable","purchasable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>QSFP-40G-ESR4 Juniper Networks 40GBase QSFP+ Transceiver - Geek Tech Sol<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/geektechsol.com\/index.php\/product\/qsfp-40g-esr4-juniper-networks-40gbase-qsfp-transceiver\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"QSFP-40G-ESR4 Juniper Networks 40GBase QSFP+ Transceiver - Geek Tech Sol\" \/>\n<meta property=\"og:description\" content=\"QSFP-40G-ESR4 Overview Manage your network connections efficiently with the Juniper Networks QSFP+ transceiver. It provides 40GBase-SR4 throughput up to 400m over multi-mode fiber (MMF) at a wavelength of 850nm using a MPO connector. 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