100G QSFP28 to QSFP28 Passive Direct Attach Copper Twinax Cable (DAC)

Compliant with IEEE 802.3、SFF-8662、QSFP28 MSA standard
Switch to Switch
Switch to GPU

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SPECIFICATIONS
Cable End Connector AQSFP28Cable End Connector BQSFP28
Jumper TypeDirect-AttachData Rate100G
Aggregate Bit Rate103.12GbpsLane Bit Rate25.78Gbps
Number of Channels4Single Channel Rate25G
Minimum Bend Radius5X Cable OD -Single, 10X Cable OD - RepeatedFactory BrandPHILISUN
Attenuation26AWG:10dB/8.5m maximum
30AWG:8.4dB/5.5m maximum		Bit Error Rate≤10-12
ShieldBraid/FoilWire AWG26AWG/30AWG
Cable TypePassive TwinaxCable OD30AWG: 6.6mm
26AWG: 8.4mm
Cable Colour/MaterialBlack PVC(OFNR)Cable Length Selection0.5-5 meter
ProtocolsSFF-8665/IEEE 802.3/QSFP28 MSA/QSFP28 MSA/SFF-8436Application Scenarios100Gigabit Ethernet (100GbE)
Supply Voltage3.3VPower Dissipation<0.5W
Operating Temperature0 to 70℃ (32 to 158℉)Storage Temperature-40 to 85℃ (-40 to 185℉)

 

PRODUCT PRESENTATION
The PHILISUN 100G QSFP28 to QSFP28 Passive Direct Attach Copper Twinax Cable (DAC) provides a high-speed, point-to-point link, offering the best in-rack connectivity for modern Data Center and HPC environments. Utilizing Passive Copper technology, it ensures Ultra-Low Latency and zero power consumption, making it highly Cost-Effective. The cable is fully compliant with the IEEE 802.3, SFF-8662, and QSFP28 MSA Standard, supporting direct links from Switch to Switch and high-throughput Server Interconnect paths to Switch to GPU systems.

 

DAC SERIES PRODUCTS

 

PRODUCTION & TESTING EQUIPMENT

 

PERFORMANCE PARAMETER
Absolute Maximum Ratings
Parameter Symbol Min. Typ. Max. Unit
Operating Case Temperature – -40 – +85 ℃
Relative Humidity Tc 0 – +70 ℃
Supply Voltage VCC3 3 3.3 3.47 V
Data Rate Per Lane – 1 – 25.78 Gb/s

 

High Speed Characteristics
Parameter Symbol Min. Typ. Max. Unit Note
Differential Impedance RIN, P 9 100 110 Ώ –
Insertion loss SDD2 8 – 22.48 dB At 12.8906
Differential Return Loss SDD11
SDD22		 12.45 – See 1 dB At 0.05 to
3.12 – See 2 At 4.1 to 19
Common-mode to   common mode output return loss SCC11 SCC22 2 – – dB At 0.2 to 19 GHz
Differential to common-mode return loss SCD11
SCD22		 12 – See 3 dB At 0.01 to
10.58 – See 4 At 12.89 to
Differential to common Mode Conversion Loss SCD21-IL 10 – – dB At 0.01 to
– – See 5 At 4.1 to 19
6.3 – – At 15.7 to
Channel Operating Margin COM 3 – – dB –
Notes:
1. Reflection Coefficient given by equation SDD11(d B) < 16.5 – 2 × SQRT(f ), with finGHz.
2. Reflection Coefficient given by equation SDD11(dB) < 10.66 – 14 × log10(f/5.5), with finGHz.
3. Reflection Coefficient given by equation SCD11(d B) < 22 – (20/25.78)*f, with finGHz.
4. Reflection Coefficient given by equation SCD11(dB) < 15 – (6/25.78)*f, with finGHz.
5. Reflection Coefficient given by equation SCD21(dB) < 27 – (29/22)*f, with finGHz.

 

Pin Definition

 

PIN Logic Symbol Name/Description Note
1 – GND Ground 1
2 CML-I Tx2n Transmitter Inverted Data –
3 CML-I Tx2p Transmitter Non-Inverted –
4 – GND Ground 1
5 CML-I Tx4n Transmitter Inverted Data –
6 CML-I Tx4p Transmitter Non-Inverted –
7 – GND Ground 1
8 LVTTL-I ModSel Module Select –
9 LVTTL-I ResetL Module  Reset –
10 – Vcc Rx +3.3V Power Supply 2
11 LVCMOS SCL 2-wire serial interface –
12 LVCMOS SDA 2-wire serial interface –
13 – GND Ground 1
14 CML-O Rx3p Receiver Non-Inverted –
15 CML-O Rx3n Receiver Inverted Data –
16 – GND Ground 1
17 CML-O Rx1p Receiver Non-Inverted –
18 CML-O Rx1n Receiver Inverted Data –
19 – GND Ground 1
20 – GND Ground 1
21 CML-O Rx2n Receiver Inverted Data –
22 CML-O Rx2p Receiver Non-Inverted –
23 – GND Ground 1
24 CML-O Rx4n Receiver Inverted Data –
25 CML-O Rx4p Receiver Non-Inverted –
26 – GND Ground 1
27 LVTTL-O ModPrs Module Present –
28 LVTTL-O IntL Interrupt –
29 – Vcc Tx +3.3V Power supply 2
30 – Vcc1 +3.3V Power supply 2
31 LVTTL-I LPMode Low Power Mode –
32 – GND Ground 1
33 CML-I Tx3p Transmitter Non-Inverted –
34 CML-I Tx3n Transmitter Inverted Data –
35 – GND Ground 1
36 CML-I Tx1p Transmitter Non-Inverted –
37 CML-I Tx1n Transmitter Inverted Data –
38 – GND Ground 1
Notes:
1. GND is the symbol for signal and supply (power) common for the QSFP+ module. All are common within the QSFP+ module and all module voltages are referenced to this potential unless otherwise noted. Connect these directly to the hostboard signal-common ground plane.
2. Vcc Rx, Vcc1 and Vcc Tx are the receiver and transmitter power supplies and shall be applied concurrently. Requirements defined for the host side of the Host Edge Card Connector are listed in Table 6. Recommended host board power supply filter ing is shown in Figure 4. Vcc Rx Vcc1 and  Vcc Tx may  be internally  connected within the QSFP+ Module module in any combination. The connector pins are each rated for a maximum current of 500 mA.

 

PRODUCT CERTIFICATION

 

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