100G QSFP28 Transceivers Cables for InfiniBand EDR & RoCE

From SFP to OSFP

	OSFP	QSFP-DD	QSFP Series				SFP Series
Size	OSFP QSFP-DD QSFP112/QSFP56/QSFP28/QSFP+ SFP28/SFP+/SFP
Form Factor	OSFP	OSFP	OSFP112	QSFP56	OSFP28	QSFP+	SFP28	SFP+	SFP
Electrical Lanes	8	8	4	4	4	4	1	1	1
Single Channel Rate	50G/100G/ 200G	25G/50G/100G	100G	50G	25G	10G	25G	10G	1G
Modulation	PAM4	NRZ/PAM4	PAM4	PAM4	NRZ/PAM4	NRZ	NRZ	NRZ	NRZ
Connector Types	MPO/LC	MPO/LC	MPO/LC	MPO/LC	MPO/LC	MPO/LC	LC	LC	LC
Backward Compatibility	/	QSFP+/QSFP28/ QSFP56/QSFP112	OSFP+/QSFP28/QSFP56	QSFP+/QSFP28	QSFP+	/	SFP+	SFP	/

Frequently Asked Questions

QSFP28 Transceivers and Cables

Can a 100G QSFP28 module be used in a QSFP56 port?

Yes. QSFP56 ports are mechanically and electrically backward-compatible with QSFP28 modules, enabling seamless integration of 100G optics into 200G/400G switches.

What is the transmission distance of 100G QSFP28 modules?

NADDOD's 100G QSFP28 modules support distances ranging from 70 meters (SR4/SRBD over MMF) to 80 kilometers (ZR4 over SMF), with intermediate options like DR/PSM4/FR/CWDM4 (up to 2km), LR/LR4 (up to 10km), and ER4 (up to 40km).

What is the maximum length of a QSFP28 100G DAC/AOC cable?

QSFP28 100G DAC cables typically support lengths from 1 to 5 meters. ACC can extend up to 7m, ideal for short-reach, high-speed connections within racks or adjacent cabinets. AOC are available from 1m to 100m for longer intra-datacenter connections.

What modulation do 100G QSFP28 modules use?

NADDOD's 100G QSFP28 modules use NRZ modulation for electrical ports and both NRZ and PAM4 modulation for optical ports. QSFP28 SRBD, DR, FR, and LR use PAM4 for higher data rates, while SR4, LR4, ER4, ZR4, CWDM4, and PSM4 use NRZ. PAM4 offers higher bandwidth efficiency, while NRZ provides lower latency and simpler implementation.

What is unique about the 100G QSFP28 CWDM4 module?

The 100G QSFP28 CWDM4 module uses 4 wavelengths (1271/1291/1311/1331 nm) over a single fiber pair, significantly reducing fiber and module costs compared to PSM4 (which requires 8 fibers) and LR4. It supports up to 2 kilometers over SMF, making it the most cost-effective solution for medium-distance links between SR4 (100m) and LR4 (10km). CWDM4 uses simplified WDM technology, requires FEC for optimal performance, and is ideal for data center interconnects within 2 km.

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100G QSFP28 Transceivers and Cables

OSFP 400/800/1600G

QSFP-DD 400/800G

QSFP112 400G

QSFP56 200G

QSFP28 100G

QSFP+ 40G

SFP28 25G

SFP+ 10G

SFP 1G