CFP vs QSFP28 Transceivers: Key Differences and Specifications

optical transceiver
cfp
qsfp28
fiber optic
optical component

This article breaks down the differences between CFP and QSFP28 transceivers, covering their specifications, applications, and more.

CFP vs CFP2 vs CFP4 vs CFP8

Figure 1: Dimensions of CFP, CFP2, CFP4, and CFP8

QSFP28

Figure 2: Dimension of QSFP28

Here’s a detailed comparison in table format:

SpecificationsCFPQSFP28
Line rate40/100 G4 x 25 -28G
Hot pluggableYESYES
Dimensions (W x L x H, mm)82 x 145 x 1418 x 52 x 8.5
Electrical interfaceCAUI, XLAUI, SFI-5, SFI-5.2 CPPI-4CPPI-4
Max. power3 to 18 W3.5 W
ApplicationsEthernet, SONET/SDH, OTNInfiniBand, Ethernet
Front panel density (1 RU)4 ports22/44 ports
MediaMMF, SMFMMF, SMF
Electrical signaling in Gb/s10 x 10 CAUI-104 x 25 CAUI-4
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fiber optic
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fiber optic
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