56G QSFP+ DAC Cables – www.philisun.com https://www.philisun.com Optical transceivers support <strong>10G to 800G</strong> high-speed transmission Wed, 11 Mar 2026 10:11:43 +0000 en-US hourly 1 https://www.philisun.com/wp-content/uploads/2025/10/philisun斐立飒-logo彩色方形-1-100x100.png 56G QSFP+ DAC Cables – www.philisun.com https://www.philisun.com 32 32 56G QSFP+ to QSFP+ Passive Direct Attach Copper Twinax Cable (DAC) https://www.philisun.com/products/qsfp-56g-dac/ Wed, 11 Mar 2026 10:03:32 +0000 https://www.philisun.com/?post_type=product&p=7521 Compliant with IEEE802.3ba、SFF-8436 MSA standard
Switch to Switch
Switch to GPU

56G QSFP+ to QSFP+ Passive Direct Attach Copper Twinax Cable (DAC)最先出现在www.philisun.com。

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SPECIFICATIONS
Cable End Connector AQSFP+Cable End Connector BQSFP+
Jumper TypeDirect-AttachData Rate56G
Aggregate Bit Rate56GbpsLane Bit Rate16Gbps
Number of Channels4Single Channel Rate16G
Minimum Bend Radius5X Cable OD -Single, 10X Cable OD - RepeatedFactory BrandPHILISUN
Attenuation
26AWG:10dB/8.5m maximum
30AWG:8.4dB/5.5m maximum		Bit Error Rate≤10-12
ShieldBraid/FoilWire AWG26AWG/30AWG
Cable TypePassive TwinaxCable OD30AWG: 6.0mm
26AWG: 7.8mm
Cable Colour/MaterialBlack PVC(OFNR)Cable Length Selection0.5-5 meter
ProtocolsSFF-8436/40G InfiniBand 4x FDR/IEEE802.3baApplication Scenarios56Gigabit Ethernet (56GbE)
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 56G QSFP+ to QSFP+ Passive Direct Attach Copper Twinax Cable (DAC) provides a reliable, high-speed, point-to-point link, optimized for InfiniBand (FDR) and 56GbE protocols in Data Center and HPC environments. Engineered for the lowest power consumption and Ultra-Low Latency, this Passive Copper solution is fully compliant with the IEEE802.3ba and SFF-8436 MSA Standard. It is a Cost-Effective copper twinax alternative, supporting critical links from Switch to Switch and accelerating data transfer for Switch to GPU interconnects over short distances.

 

DAC SERIES PRODUCTS

 

PRODUCTION & TESTING EQUIPMENT

 

PERFORMANCE PARAMETER
Absolute Maximum Ratings
Parameter Symbol Min Typ. Max Unit Ref.
Storage Temperature Ts -40 – 85 ℃ –
Supply Voltage VCCT, R -0.5 – 4 V –
Relative Humidity Vcc 0 – 85 % –

 

Recommended Operating Environment
Parameter Symbol Min Typ. Max Unit Ref.
Caseoperating Temperature Tc 0 – 70 ℃ –
Supply Voltage     VCCT, R 3.13 3.3 3.47 V –
Power Dissipation PD – – 0.02 W –

 

Pin Assignment

PIN Logic Symbol Description Notes
1 – GND Ground 1
2 CML-I Tx2n Transmitter Inverted Data Input –
3 CML-I Tx2p Transmitter Non-Inverted Data Input –
4 – GND Ground 1
5 CML-I Tx4n Transmitter Inverted Data Input –
6 CML-I Tx4p Transmitter Non-Inverted Data Input –
7 – GND Ground 1
8 LVTTL-I ModSelL Module Select –
9 LVTTL-I ResetL Module Reset –
10 – VccRx +3.3 V Power Supply Receiver 2
11 LVCMOS-I/O SCL 2-wire serial interface clock –
12 LVCMOS-I/O SDA 2-wire serial interface data –
13 – GND Ground 1
14 CML-O Rx3p Receiver Non-Inverted Data Output –
15 CML-O Rx3n Receiver Inverted Data Output –
16 – GND Ground 1
17 CML-O Rx1p Receiver Non-Inverted Data Output –
18 CML-O Rx1n Receiver Inverted Data Output –
19 – GND Ground 1
20 – GND Ground 1
21 CML-O Rx2n Receiver Inverted Data Output –
22 CML-O Rx2p Receiver Non-Inverted Data Output –
23 – GND Ground 1
24 CML-O Rx4n Receiver Inverted Data Output –
25 CML-O Rx4p Receiver Non-Inverted Data Output –
26 – GND Ground 1
27 LVTTL-O ModPrsL Module Present –
28 LVTTL-O IntL Interrupt –
29 – VccTx +3.3V Power supply transmitter 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 Data Input –
34 CML-I Tx3n Transmitter Non-Inverted Data Output –
35 – GND Ground 1
36 CML-I Tx1p Transmitter Inverted Data Output –
37 CML-I Tx1n Transmitter Non-Inverted Data Output –
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 host board signal-common ground plane.
2.Vcc Rx, Vcc1 and VccTx are the receiver and transmitter power supplies and shall be applied concurrently. Vcc Rx Vcc1 and VccTx may be internally connected with- in the QSFP+ Module module in any combination. The connector pins are each rated for a maximum current of 500 mA.

 

PRODUCT CERTIFICATION

 

COMPATIBLE BRANDS
CONFIGURATION INFORMATION
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56G QSFP+ to QSFP+ Passive Direct Attach Copper Twinax Cable (DAC)最先出现在www.philisun.com。

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