100G QSFP28 DAC

QSFP28 100g direct attach cable are compliant with the SFF-8665 specifications. Various choices of wire gauge are available from 30 to 26 AWG with various choices of cable length (up to 5m).

Features of 100G QSFP28 Direct Attach Cable
Up to 25.78Gbps data rate per channel

Up to 5m transmission

Hot-pluggable QSFP+ 38 PIN footprint

Compatible to SFF-8665

Compliant with IEEE 802.3bj

Single 3.3V power supply

Temperature Range: 0~ 70 ®C

RoHS compliant

Applications of 100G QSFP28 Direct Attach Cable
Low EMI radiation switches, servers and routers

Data center networks

Storage area networks

High performance computing

Telecommunication and wireless infrastructure

Medical diagnostics and networking

Test and measurement equipment

Specifications of 100G QSFP28 Direct Attach Cable
Mechanical Specifications | Ordering Information

Parameter Minimum Typical Maximum Unit
Cable Diameter (26AWG) - 0.220 - Inches
Bend Radius (26AWG) 1.102 - - Inches
Cable Diameter (28AWG) - 0.185 - Inches
Bend Radius (28AWG) 0.925 - - Inches
Cable Diameter (30 AWG) - 0.181 - Inches
Bend Radius (30 AWG) 0.906 - - Inches
Within Pair Skew - - 100 ps/10m
Cable Insertion Loss - 15.43 - dB/5m
Bulk Cable Time Delay - - 5.2 ns/m
Bulk Cable Impedance 95 100 105 Ohms
Insertion Force - - 40 N
Withdrawal Force - - 30 N
Retention Force 90 - - N
Durability 50 Cycles - - -

Recommended Operation Condition of 100G QSFP28 Direct Attach Cable

Parameter Symbol Min Max Unit
Operating Case Temperature Topc 0 70 degC
Storage Temperature Tst -40 85 degC
Relative Humidity (non-condensation) RS 35 60 %
Supply Voltage VCC3 3.135 3.465 V
Voltage on LVTTL Input Vilvttl -0.3 VCC3  +0.2 V
Power Supply Current ICC3 15 mA
Total Power Consumption Pd - 0.05 W

Notes:

Stress or conditions exceed the above range may cause permanent damage to the device.

This is a stress rating only and functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not applied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Frequency Domain of 100G QSFP28 Direct Attach Cable

Item Test Parameter IEEE802.3bj Specification
1 Differential Insertion Loss (SDD12) Maximum insertion loss at 12.8906Ghz @22.48dB
Minimum insertion loss at 12.8906Ghz@8dB
2 Differential Insertion Loss (SDD21) Maximum insertion loss at [email protected]
Minimum insertion loss at 12.8906Ghz@8dB
3 Differential Return Loss (SDD22) -16.5+2xSQRT(f) @ 0.01 to 4.1GHz
-10.66+14xLog10(f/5.5) @4.1 to 19GHz
4 Differential Return Loss (SDD11) -16.5+2xSQRT(f) @ 0.01 to 4.1GHz
-10.66+14xLog10(f/5.5) @4.1 to 19GHz
5 Common Mode Reflection (SCC22) -2dB @ 0.01 to 19GHz
6 Common Mode Reflection (SCC11) -2dB @ 0.01 to 19GHz
7 Common Mode Conversion (SCD22) -22+(20/25.78)*(f) @ 0.01 to 12.89GHz
-15+(6/25.78)*(f) @ 12.9 to 19GHz
8 Common Mode Conversion (SCD11) -22+(20/25.78)*(f) @ 0.01 to 12.89GHz
-15+(6/25.78)*(f) @ 12.9 to 19GHz
9 Differential to Common Mode Conversion Loss (SCD12) -10dB @ 0.01 to 12.89GHz
-27+(29/22)*(f) @ 12.9 to 15.7GHz
-6.3dB @ 15.71 to 19GHz
10 Differential to Common Mode Conversion Loss (SCD21) -10dB @ 0.01 to 12.89GHz
-27+(29/22)*(f) @ 12.9 to 15.7GHz
-6.3dB @ 15.71 to 19GHz

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