{"product_id":"etherwan-ex-ls48-c3u-tc-n51-ce-80km-sfp-module","title":"EtherWAN EX-LS48-C3U-TC-N51-CE 80km SFP Module","description":"\n\u003cdiv class=\"cm-vendor-general\"\u003e\n\n  \u003c!-- STAT BAR --\u003e\n  \u003cdiv class=\"cm-stat-bar\"\u003e\n    \u003cdiv class=\"cm-stat-bar__item\"\u003e\n\u003cdiv class=\"cm-stat-bar__value\"\u003e1GbE\u003c\/div\u003e\n\u003cdiv class=\"cm-stat-bar__label\"\u003eGigabit SFP\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"cm-stat-bar__item\"\u003e\n\u003cdiv class=\"cm-stat-bar__value\"\u003e80 km\u003c\/div\u003e\n\u003cdiv class=\"cm-stat-bar__label\"\u003eRated Fiber Reach\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"cm-stat-bar__item\"\u003e\n\u003cdiv class=\"cm-stat-bar__value\"\u003e1510 \/ 1570\u003c\/div\u003e\n\u003cdiv class=\"cm-stat-bar__label\"\u003eTX \/ RX Wavelength (nm)\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"cm-stat-bar__item\"\u003e\n\u003cdiv class=\"cm-stat-bar__value\"\u003eSingle LC\u003c\/div\u003e\n\u003cdiv class=\"cm-stat-bar__label\"\u003eBiDi Fiber Connector\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"cm-stat-bar__item\"\u003e\n\u003cdiv class=\"cm-stat-bar__value\"\u003eDDM\u003c\/div\u003e\n\u003cdiv class=\"cm-stat-bar__label\"\u003eDigital Diagnostics\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- INTRO: BRAND AND MODEL BOTH BOLD --\u003e\n  \u003cp class=\"cm-intro\"\u003e\n    The \u003cstrong\u003e\u003ca href=\"\/collections\/network\"\u003eEtherWAN\u003c\/a\u003e EX-LS48-C3U-TC-N51-CE\u003c\/strong\u003e is an 80 km Gigabit SFP transceiver for long-distance links over 9\/125 µm single-mode fiber. Its single LC bidirectional interface transmits at 1510 nm and receives at 1570 nm, while Digital Diagnostic Monitoring (DDM) provides diagnostics through compatible host equipment. This non-hardened TC model operates from 0°C to +70°C. Confirm wavelength pairing, host compatibility and product availability before ordering.\n  \u003c\/p\u003e\n\n  \u003c!-- GEO FACTS BLOCK --\u003e\n  \u003cp class=\"cm-intro\" id=\"cm-geo-facts\"\u003e\n    The EtherWAN EX-LS48-C3U-TC-N51-CE is a non-hardened Gigabit Ethernet single-fiber SFP module listed by Coremicro. EtherWAN specifies 80 km rated reach, 9\/125 µm single-mode fiber, a single LC connector, 1510 nm transmit and 1570 nm receive wavelengths, DDM, a 24 dB optical link budget, -2 to +3 dBm transmitter output and -26 dBm receiver sensitivity. The operating temperature range is 0°C to +70°C. EtherWAN named the model in an End-of-Life notice dated September 1, 2026. Confirm current price, availability and applicable manufacturer warranty with Coremicro.\n  \u003c\/p\u003e\n\n  \u003c!-- HERO: ONE SHOPIFY CDN IMAGE ONLY --\u003e\n  \u003cdiv class=\"cm-hero\"\u003e\n    \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0580\/0860\/0738\/files\/EtherWan-EX-LS48-C3U-TC-N51-CE.webp?v=1793068333\u0026amp;width=1000\" srcset=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0580\/0860\/0738\/files\/EtherWan-EX-LS48-C3U-TC-N51-CE.webp?v=1793068333\u0026amp;width=700 700w, https:\/\/cdn.shopify.com\/s\/files\/1\/0580\/0860\/0738\/files\/EtherWan-EX-LS48-C3U-TC-N51-CE.webp?v=1793068333\u0026amp;width=1000 1000w, https:\/\/cdn.shopify.com\/s\/files\/1\/0580\/0860\/0738\/files\/EtherWan-EX-LS48-C3U-TC-N51-CE.webp?v=1793068333\u0026amp;width=1400 1400w\" sizes=\"(min-width: 1440px) 1416px, 100vw\" width=\"1000\" height=\"1000\" alt=\"EtherWAN EX-LS48-C3U-TC-N51-CE 80 km single LC BiDi SFP with DDM diagnostics\" loading=\"lazy\" decoding=\"async\"\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- KEY FEATURES: LAYOUT 3 TWO-COLUMN FEATURE GRID --\u003e\n  \u003cdiv class=\"cm-section-label\"\u003e\n\u003cdiv class=\"cm-section-label__bar\"\u003e\u003c\/div\u003e\n\u003cspan class=\"cm-section-label__text\"\u003eKey Features\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"cm-feature-grid cm-feature-grid--2col\"\u003e\n    \u003cdiv class=\"cm-feature-box\"\u003e\n      \u003cdiv class=\"cm-feature-box__icon\"\u003e🔗\u003c\/div\u003e\n      \u003ch3 class=\"cm-feature-box__title\"\u003e80 km Single-Mode Fiber Reach\u003c\/h3\u003e\n      \u003cp class=\"cm-feature-box__text\"\u003eThe manufacturer-listed 80 km Gigabit fiber reach supports planning long-distance links between compatible network devices. Confirm attenuation, connector and splice losses, and available optical margin rather than relying on the distance rating alone.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"cm-feature-box\"\u003e\n      \u003cdiv class=\"cm-feature-box__icon\"\u003e↔️\u003c\/div\u003e\n      \u003ch3 class=\"cm-feature-box__title\"\u003e1510 nm TX \/ 1570 nm RX BiDi Optics\u003c\/h3\u003e\n      \u003cp class=\"cm-feature-box__text\"\u003eThis single-fiber optic transmits at 1510 nm and receives at 1570 nm. It requires a compatible far-end module with complementary 1570 nm TX and 1510 nm RX wavelengths, such as the correctly specified N57-CE counterpart.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"cm-feature-box\"\u003e\n      \u003cdiv class=\"cm-feature-box__icon\"\u003e🔌\u003c\/div\u003e\n      \u003ch3 class=\"cm-feature-box__title\"\u003eSingle LC Gigabit SFP Connection\u003c\/h3\u003e\n      \u003cp class=\"cm-feature-box__text\"\u003eA single LC connector carries transmit and receive signals over one single-mode fiber strand using separate wavelengths. Check the host Gigabit SFP slot, device compatibility and fiber installation before selection.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"cm-feature-box\"\u003e\n      \u003cdiv class=\"cm-feature-box__icon\"\u003e🔍\u003c\/div\u003e\n      \u003ch3 class=\"cm-feature-box__title\"\u003eDigital Diagnostic Monitoring\u003c\/h3\u003e\n      \u003cp class=\"cm-feature-box__text\"\u003eDDM support can provide optical status information through compatible managed switches or media converters. The specific readings available depend on the host platform and its management interface.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"cm-feature-box\"\u003e\n      \u003cdiv class=\"cm-feature-box__icon\"\u003e🌡️\u003c\/div\u003e\n      \u003ch3 class=\"cm-feature-box__title\"\u003eNon-Hardened Operating Temperature\u003c\/h3\u003e\n      \u003cp class=\"cm-feature-box__text\"\u003eThe TC variant is specified for 0°C to +70°C operation. It is not a -40°C to +85°C hardened optic; match the SFP rating to the expected switch and enclosure temperatures.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"cm-feature-box\"\u003e\n      \u003cdiv class=\"cm-feature-box__icon\"\u003eℹ️\u003c\/div\u003e\n      \u003ch3 class=\"cm-feature-box__title\"\u003eEnd-of-Life and Replacement Planning\u003c\/h3\u003e\n      \u003cp class=\"cm-feature-box__text\"\u003eEtherWAN included this model in its September 1, 2026 End-of-Life notice. Confirm Special Order fulfillment, remaining stock, support coverage and suitable replacements with Coremicro before including it in a new installation.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- OPTICAL PERFORMANCE: TEXT GRID WITHOUT REPEATING HERO --\u003e\n  \u003cdiv class=\"cm-section-label\"\u003e\n\u003cdiv class=\"cm-section-label__bar\"\u003e\u003c\/div\u003e\n\u003cspan class=\"cm-section-label__text\"\u003eOptical Performance\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"cm-card cm-card--full\"\u003e\n    \u003cdiv class=\"cm-card__grid\"\u003e\n      \u003cdiv class=\"cm-card__grid-item\"\u003e\n\u003cp class=\"cm-card__grid-label\"\u003eFiber Type\u003c\/p\u003e\n\u003cp class=\"cm-card__grid-value\"\u003e9\/125 µm single-mode\u003c\/p\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"cm-card__grid-item\"\u003e\n\u003cp class=\"cm-card__grid-label\"\u003eConnector\u003c\/p\u003e\n\u003cp class=\"cm-card__grid-value\"\u003eSingle LC \/ BiDi\u003c\/p\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"cm-card__grid-item\"\u003e\n\u003cp class=\"cm-card__grid-label\"\u003eTX \/ RX Wavelengths\u003c\/p\u003e\n\u003cp class=\"cm-card__grid-value\"\u003e1510 nm \/ 1570 nm\u003c\/p\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"cm-card__grid-item\"\u003e\n\u003cp class=\"cm-card__grid-label\"\u003eOptical Link Budget\u003c\/p\u003e\n\u003cp class=\"cm-card__grid-value\"\u003e24 dB\u003c\/p\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"cm-card__grid-item\"\u003e\n\u003cp class=\"cm-card__grid-label\"\u003eOptical Output Power\u003c\/p\u003e\n\u003cp class=\"cm-card__grid-value\"\u003e-2 to +3 dBm\u003c\/p\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"cm-card__grid-item\"\u003e\n\u003cp class=\"cm-card__grid-label\"\u003eReceiver Sensitivity\u003c\/p\u003e\n\u003cp class=\"cm-card__grid-value\"\u003e-26 dBm\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"cm-card__footer-strip\"\u003eVerify optical loss and the complementary far-end 1570 nm TX \/ 1510 nm RX module before deployment.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- REAL-WORLD WORKFLOWS --\u003e\n  \u003cdiv class=\"cm-section-label\"\u003e\n\u003cdiv class=\"cm-section-label__bar\"\u003e\u003c\/div\u003e\n\u003cspan class=\"cm-section-label__text\"\u003eReal-World Workflows\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"cm-workflow-grid\"\u003e\n    \u003cdiv class=\"cm-workflow-card\"\u003e\u003cdiv class=\"cm-workflow-card__body\"\u003e\n      \u003cdiv class=\"cm-workflow-card__eyebrow\"\u003eNetwork Infrastructure\u003c\/div\u003e\n      \u003ch3 class=\"cm-workflow-card__title\"\u003eLong-Distance Ethernet Fiber Links\u003c\/h3\u003e\n      \u003cp class=\"cm-workflow-card__text\"\u003eConnect compatible Gigabit Ethernet equipment over a planned single-mode fiber run. Calculate total optical path loss and verify support for the transceiver at each endpoint.\u003c\/p\u003e\n    \u003c\/div\u003e\u003c\/div\u003e\n    \u003cdiv class=\"cm-workflow-card\"\u003e\u003cdiv class=\"cm-workflow-card__body\"\u003e\n      \u003cdiv class=\"cm-workflow-card__eyebrow\"\u003eRemote Facilities\u003c\/div\u003e\n      \u003ch3 class=\"cm-workflow-card__title\"\u003eSingle-Fiber Facility Connections\u003c\/h3\u003e\n      \u003cp class=\"cm-workflow-card__text\"\u003eUse a compatible BiDi pair to connect separated buildings or remote cabinets over one fiber strand. Check the actual wavelength pairing and the temperature limits of the installed equipment.\u003c\/p\u003e\n    \u003c\/div\u003e\u003c\/div\u003e\n    \u003cdiv class=\"cm-workflow-card\"\u003e\u003cdiv class=\"cm-workflow-card__body\"\u003e\n      \u003cdiv class=\"cm-workflow-card__eyebrow\"\u003eNetwork Maintenance\u003c\/div\u003e\n      \u003ch3 class=\"cm-workflow-card__title\"\u003eDDM-Assisted Optical Troubleshooting\u003c\/h3\u003e\n      \u003cp class=\"cm-workflow-card__text\"\u003eReview optical diagnostics where supported by the host switch. For existing installations, confirm EOL-related spare availability before replacing a failed optic.\u003c\/p\u003e\n    \u003c\/div\u003e\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- WHO IT IS FOR --\u003e\n  \u003cdiv class=\"cm-section-label\"\u003e\n\u003cdiv class=\"cm-section-label__bar\"\u003e\u003c\/div\u003e\n\u003cspan class=\"cm-section-label__text\"\u003eWho It's For\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"cm-audience-grid\"\u003e\n    \u003cdiv class=\"cm-audience-card\"\u003e\n\u003cp class=\"cm-audience-card__label\"\u003eNetwork Engineers\u003c\/p\u003e\n\u003cp class=\"cm-audience-card__text\"\u003eFor planning 80 km single-mode links with matched BiDi wavelengths and optical margins.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"cm-audience-card\"\u003e\n\u003cp class=\"cm-audience-card__label\"\u003eSystem Integrators\u003c\/p\u003e\n\u003cp class=\"cm-audience-card__text\"\u003eFor validating host compatibility and single-fiber connectivity between remote network devices.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"cm-audience-card\"\u003e\n\u003cp class=\"cm-audience-card__label\"\u003eInfrastructure Teams\u003c\/p\u003e\n\u003cp class=\"cm-audience-card__text\"\u003eFor network connections between facilities within the module's temperature range.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"cm-audience-card\"\u003e\n\u003cp class=\"cm-audience-card__label\"\u003eMaintenance \u0026amp; Procurement\u003c\/p\u003e\n\u003cp class=\"cm-audience-card__text\"\u003eFor sourcing matching replacements and checking support for EOL-announced modules.\u003c\/p\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- TECHNICAL SPECIFICATIONS --\u003e\n  \u003cdiv class=\"cm-section-label\"\u003e\n\u003cdiv class=\"cm-section-label__bar\"\u003e\u003c\/div\u003e\n\u003cspan class=\"cm-section-label__text\"\u003eTechnical Specifications\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv class=\"cm-table-wrap\"\u003e\n    \u003ctable class=\"cm-table\"\u003e\n      \u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eSpecification\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEtherWAN\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEX-LS48-C3U-TC-N51-CE\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Category\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGigabit SFP BiDi fiber transceiver\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0°C to +70°C (non-hardened)\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Fiber Distance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e80 km\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFiber Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9\/125 µm single-mode\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFiber Connector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle LC\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmit Wavelength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1510 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceive Wavelength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1570 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDigital Diagnostic Monitoring\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDDM supported\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOptical Link Budget\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOptical Output Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-2 to +3 dBm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Sensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-26 dBm\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLifecycle Status\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eListed in EtherWAN EOL notice dated September 1, 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailability\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eContact Coremicro to confirm Special Order fulfillment\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FAQ \/ AEO: SEVEN VISIBLE QUESTIONS --\u003e\n  \u003cdiv class=\"cm-section-label\"\u003e\n\u003cdiv class=\"cm-section-label__bar\"\u003e\u003c\/div\u003e\n\u003cspan class=\"cm-section-label__text\"\u003eFrequently Asked Questions\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003cdiv\u003e\n    \u003cdiv\u003e\n      \u003ch3\u003eWhat is the EtherWAN EX-LS48-C3U-TC-N51-CE used for?\u003c\/h3\u003e\n      \u003cp\u003eThe EtherWAN EX-LS48-C3U-TC-N51-CE is an 80 km Gigabit SFP transceiver for 9\/125 µm single-mode fiber. It uses a single LC bidirectional connection and supports Digital Diagnostic Monitoring.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv\u003e\n      \u003ch3\u003eWhich wavelengths does the EX-LS48-C3U-TC-N51-CE use?\u003c\/h3\u003e\n      \u003cp\u003eThe EX-LS48-C3U-TC-N51-CE transmits at 1510 nm and receives at 1570 nm. A compatible far-end transceiver must use the complementary 1570 nm TX and 1510 nm RX arrangement.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv\u003e\n      \u003ch3\u003eDoes this EtherWAN SFP support DDM?\u003c\/h3\u003e\n      \u003cp\u003eThis EtherWAN SFP supports Digital Diagnostic Monitoring (DDM). Diagnostic readings are available when the host switch or media converter provides access to them.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv\u003e\n      \u003ch3\u003eCan this 80 km BiDi SFP operate in hardened temperatures?\u003c\/h3\u003e\n      \u003cp\u003eThe 80 km BiDi SFP is a non-hardened TC model rated for 0°C to +70°C. It is not specified for the -40°C to +85°C hardened operating range.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv\u003e\n      \u003ch3\u003eHow does the N51-CE differ from the N57-CE?\u003c\/h3\u003e\n      \u003cp\u003eThe N51-CE transmits at 1510 nm and receives at 1570 nm, while the N57-CE reverses those wavelengths. Both are listed as 80 km, single LC, Gigabit DDM transceivers; confirm the host devices and optical budget before pairing them.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv\u003e\n      \u003ch3\u003eIs the EX-LS48-C3U-TC-N51-CE still available?\u003c\/h3\u003e\n      \u003cp\u003eEtherWAN included the EX-LS48-C3U-TC-N51-CE in an End-of-Life notice dated September 1, 2026. Coremicro currently lists the product as Special Order, but customers should confirm order eligibility, stock, warranty and alternatives before purchasing.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv\u003e\n      \u003ch3\u003eIs Coremicro an authorized EtherWAN dealer?\u003c\/h3\u003e\n      \u003cp\u003eCoremicro displays an Authorized Dealer designation on its listing for this EtherWAN SFP. Buyers can contact Coremicro to confirm current authorization and the applicable manufacturer warranty before ordering.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FAQPAGE JSON-LD ONLY; PRODUCT SCHEMA IS PROVIDED BY THE THEME --\u003e\n  \u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the EtherWAN EX-LS48-C3U-TC-N51-CE used for?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The EtherWAN EX-LS48-C3U-TC-N51-CE is an 80 km Gigabit SFP transceiver for 9\/125 µm single-mode fiber. It uses a single LC bidirectional connection and supports Digital Diagnostic Monitoring.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Which wavelengths does the EX-LS48-C3U-TC-N51-CE use?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The EX-LS48-C3U-TC-N51-CE transmits at 1510 nm and receives at 1570 nm. A compatible far-end transceiver must use the complementary 1570 nm TX and 1510 nm RX arrangement.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does this EtherWAN SFP support DDM?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This EtherWAN SFP supports Digital Diagnostic Monitoring (DDM). Diagnostic readings are available when the host switch or media converter provides access to them.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can this 80 km BiDi SFP operate in hardened temperatures?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The 80 km BiDi SFP is a non-hardened TC model rated for 0°C to +70°C. It is not specified for the -40°C to +85°C hardened operating range.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How does the N51-CE differ from the N57-CE?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The N51-CE transmits at 1510 nm and receives at 1570 nm, while the N57-CE reverses those wavelengths. Both are listed as 80 km, single LC, Gigabit DDM transceivers; confirm the host devices and optical budget before pairing them.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is the EX-LS48-C3U-TC-N51-CE still available?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"EtherWAN included the EX-LS48-C3U-TC-N51-CE in an End-of-Life notice dated September 1, 2026. Coremicro currently lists the product as Special Order, but customers should confirm order eligibility, stock, warranty and alternatives before purchasing.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is Coremicro an authorized EtherWAN dealer?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Coremicro displays an Authorized Dealer designation on its listing for this EtherWAN SFP. Buyers can contact Coremicro to confirm current authorization and the applicable manufacturer warranty before ordering.\"\n      }\n    }\n  ]\n}\n  \u003c\/script\u003e\n\n  \u003c!-- CTA --\u003e\n  \u003cdiv class=\"cm-cta\"\u003e\n    \u003ch3 class=\"cm-cta__title\"\u003eCheck Availability for This EtherWAN 80 km BiDi SFP\u003c\/h3\u003e\n    \u003cp class=\"cm-cta__text\"\u003eCoremicro's product listing carries an Authorized Dealer designation for EtherWAN equipment. Contact the team to check wavelength pairing, host compatibility, EOL-related availability, current authorized EtherWAN dealer status and applicable warranty terms.\u003c\/p\u003e\n    \u003ca href=\"\/pages\/contact\" class=\"cm-cta__button\"\u003eTalk to a Specialist\u003c\/a\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- FOOTER LINKS --\u003e\n  \u003cdiv class=\"cm-footer-links\"\u003e\n    \u003cp class=\"cm-footer-links__label\"\u003eContinue Exploring\u003c\/p\u003e\n    \u003cdiv class=\"cm-footer-links__list\"\u003e\n      \u003ca href=\"\/collections\/network\" class=\"cm-footer-links__item cm-footer-links__item--primary\"\u003eEtherWAN Network Products\u003c\/a\u003e\n      \u003ca href=\"\/products\/etherwan-ex-ls48-c3u-tc-n57-ce-80km-sfp-module\" class=\"cm-footer-links__item\"\u003eComplementary N57-CE SFP\u003c\/a\u003e\n      \u003ca href=\"\/pages\/contact\" class=\"cm-footer-links__item\"\u003eContact Us\u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"EtherWan","offers":[{"title":"Default Title","offer_id":47488737378466,"sku":"EtherWan-EX-LS48-C3U-TC-N51-CE","price":1042.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0580\/0860\/0738\/files\/EtherWan-EX-LS48-C3U-TC-N51-CE.webp?v=1793068333","url":"https:\/\/www.coremicro.com\/products\/etherwan-ex-ls48-c3u-tc-n51-ce-80km-sfp-module","provider":"COREMICRO.COM","version":"1.0","type":"link"}