Terminology » CFP vs QSFP28 Transceivers: Key Differences and Specifications

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:

Specifications	CFP	QSFP28
Line rate	40/100 G	4 x 25 -28G
Hot pluggable	YES	YES
Dimensions (W x L x H, mm)	82 x 145 x 14	18 x 52 x 8.5
Electrical interface	CAUI, XLAUI, SFI-5, SFI-5.2 CPPI-4	CPPI-4
Max. power	3 to 18 W	3.5 W
Applications	Ethernet, SONET/SDH, OTN	InfiniBand, Ethernet
Front panel density (1 RU)	4 ports	22/44 ports
Media	MMF, SMF	MMF, SMF
Electrical signaling in Gb/s	10 x 10 CAUI-10	4 x 25 CAUI-4

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CFP vs QSFP28 Transceivers: Key Differences and Specifications

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