{"product_id":"cisco-qsfp-100g-cwdm4-s-compatible-100g-qsfp28-cwdm4-transceiver-2km-smf-1271-1331nm-duplex-lc","title":"Cisco QSFP-100G-CWDM4-S Compatible, 100G QSFP28 CWDM4 Transceiver — 2km SMF, 1271–1331nm, Duplex LC","description":"\u003cp\u003eCoded for Cisco (Arista \/ Juniper coding on request). Compatible with Cisco QSFP-100G-CWDM4-S. CWDM4 MSA — pair with another CWDM4 optic at the far end.\u003c\/p\u003e\n\n\u003cp\u003eThird-party 100G QSFP28 CWDM4 optical transceiver, fully compatible with Cisco QSFP-100G-CWDM4-S, delivering single-mode 100G connectivity up to 2km at lower cost than LR4. — the sweet spot for runs too long for SR4 multimode but shorter than a full 10km LR4. Operates on four CWDM wavelengths (1271 \/ 1291 \/ 1311 \/ 1331nm) multiplexed onto a duplex SMF pair via LC. Hot-pluggable, QSFP28 MSA compliant, DOM\/DDM diagnostics. Ideal for spine-to-spine across a large facility, intra-campus 100G, and medium-reach DCI.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specs\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eForm factor: QSFP28; Rate: 100Gb\/s (4x25G NRZ)\u003c\/li\u003e\n  \u003cli\u003eMedia: G.652 SMF; Wavelengths: 1271 \/ 1291 \/ 1311 \/ 1331nm (CWDM4 MSA)\u003c\/li\u003e\n  \u003cli\u003eReach: 2km; Connector: Duplex LC; Diagnostics: DOM\/DDM\u003c\/li\u003e\n  \u003cli\u003eStandards: 100G CWDM4 MSA; SFF-8636\/8665; ITU-T G.694.2 CWDM grid (CWDM4 optical spec is the MSA, not IEEE)\u003c\/li\u003e\n  \u003cli\u003ePower: 3.5W max\u003c\/li\u003e\n  \u003cli\u003eCondition: New, third-party compatible\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePlatform family\u003c\/th\u003e\n\u003cth\u003eCoding (OEM part it presents as)\u003c\/th\u003e\n\u003cth\u003eStatus\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCisco Nexus 9000\/3000, Catalyst 9k (100G)\u003c\/td\u003e\n\u003ctd\u003eCisco QSFP-100G-CWDM4-S\u003c\/td\u003e\n\u003ctd\u003eCoded \/ confirmed\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArista 7000 series\u003c\/td\u003e\n\u003ctd\u003eArista QSFP-100G-CWDM4\u003c\/td\u003e\n\u003ctd\u003eCoded \/ confirmed\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eJuniper QFX series\u003c\/td\u003e\n\u003ctd\u003eJuniper QSFP-100G-CWDM4-C \/ -IT \/ -ET\u003c\/td\u003e\n\u003ctd\u003eCoded \/ confirmed\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMellanox \/ NVIDIA Spectrum\u003c\/td\u003e\n\u003ctd\u003eCoding available on request\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eEEPROM \/ Coding Notes\u003c\/h2\u003e\n\u003cp\u003ePre-programmed to present as Cisco QSFP-100G-CWDM4-S. CWDM4 follows the CWDM4 MSA, not an IEEE standard — for guaranteed interop, pair with another CWDM4 MSA optic at the far end (do not mix with LR4; the wavelength plans differ).\u003c\/p\u003e\n\n\u003ch2\u003eQ\u0026amp;A\u003c\/h2\u003e\n\u003ch3\u003eQ: What is the difference between CWDM4 and LR4?\u003c\/h3\u003e\n\u003cp\u003eA: CWDM4 reaches 2km at lower cost; LR4 reaches 10km. Choose CWDM4 when the run is under ~2km and budget matters.\u003c\/p\u003e\n\u003ch3\u003eQ: Single-mode?\u003c\/h3\u003e\n\u003cp\u003eA: Yes — SMF, duplex LC.\u003c\/p\u003e\n\u003ch3\u003eQ: Will it work with an LR4 on the far end?\u003c\/h3\u003e\n\u003cp\u003eA: No — match CWDM4 to CWDM4; the wavelength plans differ.\u003c\/p\u003e\n\u003ch3\u003eQ: Does it support DOM?\u003c\/h3\u003e\n\u003cp\u003eA: Yes.\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/resilient-tec.com\/products\/qsfp-100g-cu1m-cisco-compatible-100g-qsfp28-passive-dac-cable-1m\"\u003e100G QSFP28 passive DAC\u003c\/a\u003e | \u003ca href=\"https:\/\/resilient-tec.com\/products\/mfa1a00-c010-mellanox-mfa1a00-c010-100gbe-qsfp28-mmf-active-optical-cable-aoc-10-m\"\u003eMFA1A00-C010 100G QSFP28 AOC\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0767\/3482\/4548\/files\/QSFP-100G-CWDM4-S_Compatible_Compatibility_Report.pdf?v=1785360245\"\u003eDownload the compatibility report\u003c\/a\u003e\u003c\/p\u003e","brand":"Resilient Tec","offers":[{"title":"Default Title","offer_id":48879068282980,"sku":"QSFP-100G-CWDM4-S-C","price":208.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/3482\/4548\/files\/MMA1B00-C100.2.png?v=1780438241","url":"https:\/\/resilient-tec.com\/products\/cisco-qsfp-100g-cwdm4-s-compatible-100g-qsfp28-cwdm4-transceiver-2km-smf-1271-1331nm-duplex-lc","provider":"Resilient Tec","version":"1.0","type":"link"}