QSFP28 is a new form factor defined in SFF Committee specifications SFF-8636 and SFF-8665. With the capability of four data lanes (quad) in the single module, QSFP28 provides 100Gbps or 128Gbps aggregated data speed. An engineer-focused, "just tell me what to choose" guide to transceiver selection with architecture, power budget, compatibility, and upgrade plan — designed for 25G/100G today and 400G/800G tomorrow. Understanding the differences between QSFP+, QSFP28, QSFP56, QSFP112, QSFP-DD, and OSFP is essential for network architects, data center managers, and procurement specialists planning current deployments and future-proof infrastructure. Shop now!Depending on the application, the SFP28 transceiver can be divided into six broad categories: Regular SFP28, BiDi SFP28, CWDM SFP28, DWDM SFP28, SFP28 DAC, and SFP28 AOC.
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