Description

Technical Parameters

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Cisco Compatible	QSFP-H40G-CU1M	Brand	HTF
Connector Type	QSFP+ to QSFP+	Max Data Rate	40Gbps
Minimum Bend Radius	33mm	Cable Length	1m (3.28ft)
Wire AWG	30AWG	Jacket Material	AWG
Cable Type	Passive Twinax	MTBF	≈50 Million Hours
Power Consumption	<0.2W	Power Supply	3.3V
Temperature	0 to 70°C (32 to 158°F)	Protocols	40G InfiniBand 8x DDR, 4x QDR, 10G/40Gigabit Ethernet, Fibre Channel

How HTF manufacture the 100G, 40G, 25G, 10G DAC cables?

QSFP+ Direct Attach Cables are compliant with the SFF-8436 specifications. Various choices of wire gauge are available from 30 to 24 AWG with various choices of cable length (up to 7m).

Which things we Should Know Before Buying DAC Cable?

1. No matter in the related article or in the product description of some DACs vendors, there is always a point saying that the active DAC twinax cables are lighter and thinner than passive DAC cables. Actually, it is a wrong view of point. If you have a user experience of both active and passive DACs, you may find that there is no difference between them in the weight and appearance.

2. As the first point mentioned, the thickness and weight do not depend on the active or passive function. In fact, they are divided according to their characteristic of AWG (American Wire Gauge). For instance, AWG24 DAC cable is thicker and heavier than the AWG30. Because of the difference of wire diameter, the longer the cable, the more inconvenience AWG24 DAC twinax cable is. Moreover, there is also a limited bend radius. Thus, the longer the distance, the higher the AWG rating should be.

3. When the transmission distance is over 5 meters, active DAC cable is more suitable than passive DAC cable. Because it will cause the signal issue when using passive DAC cable for long-haul transmission.

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