{"product_id":"100gqsfp28e-lr4s-arista-100g-lr4-qsfp28-transceiver-refurbished","title":"Arista 100GQSFP28E-LR4S 100GBASE-LR4 QSFP28 Transceiver — 10km SMF, Duplex LC, Refurbished","description":"\u003cp\u003e\u003cstrong\u003e100G LR4 over duplex SMF — 10 km LAN-WDM, not CWDM4 2 km\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eArista 100GQSFP28E-LR4S — 100GBASE-LR4 QSFP28 transceiver, refurbished\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eArista \/ E-series Part Number:\u003c\/strong\u003e 100GQSFP28E-LR4S\u003cbr\u003e\u003cstrong\u003eCommon aliases:\u003c\/strong\u003e QSFP-100G-LR4 · 100G-LR4\u003cbr\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e Hot-pluggable QSFP28, 100GbE over duplex single-mode fiber, IEEE 100GBASE-LR4, duplex LC\u003c\/p\u003e\n\u003cp\u003eThis is the \u003cstrong\u003eLR4\u003c\/strong\u003e 100G optic — four LAN-WDM lanes around 1310 nm muxed onto one duplex LC SMF pair for up to \u003cstrong\u003e10 km\u003c\/strong\u003e. Fully interoperable with standard 100GBASE-LR4 peers (including sibling PID 100GQSFP28E-LR4). It is not CWDM4 (2 km \/ different grid) and not SR4 (MPO multimode).\u003c\/p\u003e\n\u003cp\u003eRefurbished, tested, and coded for Arista QSFP28 ecosystems. Lifetime warranty from Resilient Tec.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhich One Do I Need?\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eGoing into\u003c\/th\u003e\n\u003cth\u003eYou need\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eArista (or Arista-coded) 100G QSFP28 port, duplex SMF, runs up to ~10 km\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003e100GQSFP28E-LR4S\u003c\/strong\u003e — this product (LR4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSame cages, but BOM says CWDM4 \/ runs ≤ 2 km and you want the cheaper optic\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"\/products\/100gqsfp28e-cw4-arista-100g-cwdm4-qsfp28-transceiver-refurbished\"\u003e100GQSFP28E-CW4\u003c\/a\u003e — CWDM4 2 km\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShort-reach parallel MMF (MPO-12)\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"\/products\/qsfp28-sr4-100g-100gbase-sr4-qsfp28-transceiver-refurbished\"\u003eQSFP28-SR4-100G\u003c\/a\u003e — \u003cstrong\u003enot this module\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCisco-coded 100G LR4 specifically\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/qsfp-100g-lr4-s-cisco-compatible-100g-qsfp28-lr4-transceiver-10km\"\u003eCisco QSFP-100G-LR4-S Compatible\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eLR4 vs CWDM4:\u003c\/strong\u003e same cage, same LC connector, different wavelength plan and reach. Match the PID — do not swap them because the fiber looks the same.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e100GQSFP28E-LR4S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm Factor\u003c\/td\u003e\n\u003ctd\u003eQSFP28 (hot-pluggable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthernet Standard\u003c\/td\u003e\n\u003ctd\u003eIEEE 802.3ba 100GBASE-LR4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Rate\u003c\/td\u003e\n\u003ctd\u003e100 Gbps (4 × 25.78125 Gb\/s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelengths\u003c\/td\u003e\n\u003ctd\u003eLAN-WDM: 1295.56 \/ 1300.05 \/ 1304.58 \/ 1309.14 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector\u003c\/td\u003e\n\u003ctd\u003eDuplex LC\/UPC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiber \/ Reach\u003c\/td\u003e\n\u003ctd\u003eUp to 10 km over duplex SMF (G.652)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDOM \/ DDM\u003c\/td\u003e\n\u003ctd\u003eSupported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e~4.0 W max class\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C to 70°C (commercial)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInteroperability\u003c\/td\u003e\n\u003ctd\u003eFully interoperable with 100GQSFP28E-LR4 \/ IEEE 100GBASE-LR4 peers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards\u003c\/td\u003e\n\u003ctd\u003eQSFP28 MSA, IEEE 802.3ba, RoHS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eLifetime, backed by Resilient Tec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eRefurbished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003eNote on Reach: LR4 10 km vs LRL4 2 km\u003c\/h2\u003e\n\u003cp\u003eFull \u003cstrong\u003e100GBASE-LR4\u003c\/strong\u003e is specified to \u003cstrong\u003e10 km\u003c\/strong\u003e on G.652. Arista also sells a shorter \u003cstrong\u003eLRL4\u003c\/strong\u003e (2 km) part that uses the same LAN-WDM grid but a tighter budget. This PID (\u003cstrong\u003e100GQSFP28E-LR4S\u003c\/strong\u003e) is the \u003cstrong\u003e10 km LR4\u003c\/strong\u003e class — interoperable with standard LR4. If your run is only a few hundred meters on SMF, CWDM4 is usually the better-value buy; if the BOM says LR4 or the span needs 10 km, stay here.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eGood to Know\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuplex LC SMF only\u003c\/strong\u003e — not MPO parallel fiber.\u003c\/li\u003e\n\u003cli\u003eLAN-WDM LR4 and CWDM4 will not interoperate with each other even though both use duplex LC.\u003c\/li\u003e\n\u003cli\u003eRefurbished = previously deployed, tested, and re-warranted by Resilient Tec.\u003c\/li\u003e\n\u003cli\u003eConfirm against your Arista EOS \/ platform optics matrix before production cutover.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eQuick Checklist — Is This the Right Module?\u003c\/h2\u003e\n\u003cp\u003eYou have a \u003cstrong\u003e100G QSFP28\u003c\/strong\u003e port that accepts Arista LR4 coding. Your fiber is \u003cstrong\u003eduplex single-mode\u003c\/strong\u003e with \u003cstrong\u003eLC\u003c\/strong\u003e. You need up to \u003cstrong\u003e10 km\u003c\/strong\u003e (or your BOM specifically says LR4). You are \u003cstrong\u003enot\u003c\/strong\u003e ordering CWDM4 or SR4 by mistake.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eAvailability\u003c\/h2\u003e\n\u003cp style=\"border-left: 3px solid #1e8f5e; background: #f7f8fa; padding: 10px 14px; margin: 14px 0;\"\u003e\u003cstrong\u003eIn stock at Resilient Tec · Ships from Knoxville, TN.\u003c\/strong\u003e\u003cbr\u003eNeed CWDM4 and LR4 mixed in one spare kit? We will quote both. \u003ca href=\"\/pages\/request-a-quote\"\u003e\u003cstrong\u003eRequest a quote →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e lifetime, \u003ca href=\"\/pages\/lifetime-warranty\"\u003ebacked by Resilient Tec\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eYou Might Also Need\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/100gqsfp28e-cw4-arista-100g-cwdm4-qsfp28-transceiver-refurbished\"\u003e100GQSFP28E-CW4 — Arista 100G CWDM4 QSFP28, Refurbished\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/qsfp28-sr4-100g-100gbase-sr4-qsfp28-transceiver-refurbished\"\u003eQSFP28-SR4-100G — 100G SR4 QSFP28, Refurbished\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/qsfp-100g-lr4-s-cisco-compatible-100g-qsfp28-lr4-transceiver-10km\"\u003eCisco QSFP-100G-LR4-S Compatible — 100G LR4, 10 km\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/pages\/product-guides\"\u003eProduct guides\u003c\/a\u003e · \u003ca href=\"\/pages\/request-a-quote\"\u003eRequest a quote\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eRelated Guides\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/lifetime-warranty\"\u003eLifetime warranty — how Resilient Tec backs what we sell\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/request-a-quote\"\u003eRequest a quote for 100G QSFP28 fills and spare kits\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/product-guides\"\u003eProduct guides\u003c\/a\u003e\u003c\/p\u003e\n","brand":"Arista","offers":[{"title":"Default Title","offer_id":67603159482468,"sku":"100GQSFP28E-LR4S-R","price":39.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/resilient-tec.com\/products\/100gqsfp28e-lr4s-arista-100g-lr4-qsfp28-transceiver-refurbished","provider":"Resilient Tec","version":"1.0","type":"link"}