400G AEC Cables – www.philisun.com https://www.philisun.com Optical transceivers support <strong>10G to 800G</strong> high-speed transmission Mon, 11 May 2026 07:37:57 +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 400G AEC Cables – www.philisun.com https://www.philisun.com 32 32 400G QSFP-DD to 4×100G QSFP28 Active Electrical Copper Breakout Cable (AEC) https://www.philisun.com/products/400g-qsfp-dd-4-100g-qsfp28-aec/ Mon, 11 May 2026 06:32:05 +0000 https://www.philisun.com/?post_type=product&p=9152 Compliant with
QSFP-DD MSA、SFF-8636 standard
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400G QSFP-DD to 4×100G QSFP28 Active Electrical Copper Breakout Cable (AEC)最先出现在www.philisun.com。

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SPECIFICATIONS
Cable End Connector AQSFP-DDCable End Connector B4×QSFP28
Jumper TypeDirect-Attach BreakoutData Rate400G
Aggregate Bit Rate425GbpsLane Bit RateQSFP-DD:53.125Gbps
QSFP28:25.78125Gbps
Number of ChannelsQSFP-DD:8 TX and 8 RX per Module (PAM4)
QSFP28:4 TX and 4 RX per Module (NRZ)		Single Channel RateQSFP-DD:53.125Gb/s; 25.78125Gb/s
QSFP28: 25.78125Gb/s
Minimum Bend Radius5X Cable ODFactory BrandPHILISUN
Management InterfaceI²cBit Error Rate≤10-12
ShieldBraid/FoilWire AWG30AWG
Cable TypeActive TwinaxCable OD30AWG: 5.3mm
Cable Colour/MaterialBlack PVC(OFNR)Cable Length Selection1-5 meter
ProtocolsQSFP-DD MSA/SFF-8679/SFF-8636Application Scenarios400 Gigabit Ethernet (400GbE)
Supply Voltage3.3VPower DissipationQSFP-DD:≤8.5W
QSFP28:≤3.5W
Operating Temperature0 to 70℃ (32 to 158℉)Storage Temperature-40 to 85℃ (-40 to 185℉)

 

PRODUCT PRESENTATION

The PHILISUN 400G QSFP-DD to 4x100G QSFP28 Active Electrical Copper Breakout Cable is a crucial tool for high-density network migration and port utilization. It efficiently links a single 400G QSFP-DD switch port (using 53.125Gbps PAM4 lanes) to four downstream 100G QSFP28 server ports (using 25.78125Gbps NRZ lanes). Featured with low latency and reliable performance, this cable enables massive breakout connectivity vital for scaling capacity in data center fabrics and supporting the growing demand for 100G server-to-ToR links.

AEC SERIES PRODUCTS

 

PRODUCTION & TESTING EQUIPMENT

 

PERFORMANCE PARAMETER
Absolute Maximum Ratings
Parameter Min. Max. Unit
Supply Voltage -0.3 3.465 V
Data Input Voltage 0 1.8 V
Control Input Voltage -0.3 3.6 V
Storage Temperature Range – 10 +85 °C
Operating Case Temperature Range 0 +70 °C
Operating Relative Humidity 0 80 %

 

General Product Characteristics
Parameter Value Comments
Module Form Factor QSFP- DD and QSFP28 –
N umber of Data Lanes 8 TX and 8  RX per Module (PAM4) QSFP- DD
4 TX and 4  RX per Module (NRZ) QSFP28
Maximum Aggregate Data Rate 400Gbps –
Nominal Data Rate per Lane 53. 125Gbps (PAM4) QSFP- DD
25.78125Gbps (NRZ) QSFP28
Electrical I nterface and Pin-out 76- Pinedge Connector QSFP- DD
38- Pinedge Connector QSFP28
Pin Description Per QSFP- DD  Hardware Specification
(QSFP- DD) and per SFF-8679 (QSFP28)		 –
Management Interface I2C, Serial, Timing per Common
Management  Interface Specification for
8X/ 16X  Pluggable Transceivers		 QSFP-DD
I2C, Serial, Timing per SFF-8636 QSFP28
Length of AEC 1, 3, 5 Meters,  Using Copper
BER ( P re- FEC) < 10-8 Tested with QPRBS31  Pattern
BER ( Post- FEC) < 10-15 Tested with QPRBS31  Pattern
Power Supply (DC) 3.3V –

 

Electrical Specifications
Parameter Conditions Min. Typ. Max. Units
Power Consumption @QSFP- DD – – 8.5 – W
Power Consumption @QSFP28 – – 3.5 – W
Supply Voltage, VccTx, VccRx – 3.135 3.3 3.465 VDC
Supply Current, Icc@QSFP- DD – – 2570 – mA
Supply Current, Icc@QSFP28 – – 1050 – mA
Power Supply Noise Tolerance – – 25 – mVpp
Active Cable Input Electrical Characteristics per Lane
Input Differential Voltage – – Complies with Standards – –
Signaling Rate/Channel @QSFP- DD PAM4 – 53.125
25.78125		 – Gb/s
Signaling Rate/Channel @QSFP28 NRZ – 25.78125 – Gb/s
RX Input Resistance – 90 100 ohms 110
Input Jitter Tolerance – – Complies with Standards – –
Input Common Mode Noise – – – 10 mV- rms

 

ESD Ratings
ESD Standard Level Maximum Rating Units
Contact Discharge Air Discharge
IEC/EN6100-4-2 4 ±8k ±15k V
Parameter Conditions Min. Typ. Max. Units
Active Cable Output Electrical Characteristics per Lane
Output Equalization Coefficient Step Size – 1.5 – 5 %
Output Total Jitter Complies with standards
TX Output Impedance 80 100 120 ohms
Latency Characteristics
Total Latency – – – 160 ns

 

Module Output Characteristics (atTP4*)-QSFP-DD End
Notes:  *Please refer to IEEE802.3bs  120E and IEEE802.3bm 83E for TP4 definition.
Parameter Value Units
Signaling Rate Per Lne (Range) 26.5625± 100 ppm GBd
AC Common-mode Output Voltage (Max, RMS) 17.5 mV
Differential Peak-to- Peak Output Voltage (Max.) 900 mV
Near-End ESMW (Eye Symmetry Mask Width) 0.265 UI
Near-End Eye Height, Differential (Min.) 70 mV
Far-End ESMW (Eye Symmetry Mask Width) 0.2 UI
Far-End Eye Height, Differential (Min.) 30 mV
Transition Time (Min. 20% to 80%) 9.5 ps
DC Common Mode Voltage (Min.)a –350 mV
DC Common Mode Voltage (Max.)a 2850 mV

 

Module Output Characteristics (atTP4*)-QSFP28 End
Notes:  *Please refer to IEEE802.3bs  120E and IEEE802.3bm 83E for TP4 definition.
Parameter Value Units
Signaling Rate per Lane (Range) 25.78125± 100ppm GBd
AC Common-Mode Output Voltage (Max, RMS) 17.5 mV
Differential Output Voltage (Max.) 900 mV
Eyewidth (Min.) 0.57 UI
Eyeheight, Differential (Min.) 228 mV
Transition Time (Min. 20% to 80%) 12 ps
DC Common Mode Voltage (Min.)a –350 mV
DC Common Mode Voltage (Max.)a 2850 mV
A  DC common mode voltage is generated by the host. Specification includes effects of ground offset voltage.

 

Pin Description-QSFP28 End

QSFP-DD MSA-compliant 76-pin Connector

 

Pin Symbol Description
1 GND Ground
2 Tx2n Transmitter Inverted Data Input
3 Tx2p Transmitter Non-Inverted Data Input
4 GND Ground
5 Tx4n Transmitter Inverted Data Input
6 Tx4p Transmitter Non-Inverted Data Input
7 GND Ground
8 ModSelL Module Select
9 ResetL Module Reset
10 VccRx +3.3V Power Supply Receiver
11 SCL 2-wireserial Interface Clock
12 SDA 2-wireserial Interface Data
13 GND Ground
14 Rx3p Receiver Non-Inverted Data Output
15 Rx3n Receiver Inverted Data Output
16 GND Ground
17 Rx1p Receiver Non-Inverted Data Output
18 Rx1n Receiver Inverted Data Output
19 GND Ground
20 GND Ground
21 Rx2n Receiver Inverted Data Output
22 Rx2p Receiver Non-Inverted Data Output
23 GND Ground
24 Rx4n Receiver Inverted Data Output
25 Rx4p Receiver Non-Inverted Data Output
26 GND Ground
27 ModPrsL Module Present
27 ModPrsL Module Present
28 IntL Interrupt
29 VccTx +3.3V Power Supply Transmitter
30 Vcc 1 +3.3VPower Supply
31 InitMode Initialization mode; In legacy QSFP applications, the InitMode pad is called
LPMODE
32 GND Ground
33 Tx3p Transmitter Non-Inverted Data Input
34 Tx3n Transmitter Inverted DataInput
35 GND Ground
36 Tx1p Transmitter Non-Inverted Data Input
37 Tx1n Transmitter Inverted Data Input
38 GND Ground
39 GND Ground
40 Tx6n Transmitter Inverted Data Input
41 Tx6p Transmitter Non-Inverted Data Input
42 GND Ground
43 Tx4n Transmitter Inverted Data Input
44 Tx4p Transmitter Non-Inverted Data Input
45 GND Ground
46 Reserved For Future Use
47 VS1 Module Vendor Specific 1
48 VccRx1 3.3V Power Supply
49 VS2 Module Vendor Specific 2
50 VS3 Module Vendor Specific 3
51 GND Ground
52 Rx7p Receiver Non-Inverted Data Output
53 Rx7n Receiver Inverted Data Output
54 GND Ground
55 Rx5p Receiver Non-Inverted Data Output
56 Rx5n Receiver Inverted Data Output
57 GND Ground
58 GND Ground
59 Rx6n Receiver Inverted Data Output
60 Rx6p Receiver Non-Inverted Data Output
61 GND Ground
62 Rx8n Receiver Inverted Data Output
67 VccT 1x 3.3V Power Supply
68 Vcc2 3.3V Power Supply
69 Reserved For Future Use
70 GND Ground
71 Tx7p Transmitter Non-Inverted Data Input
72 Tx7n Transmitter Inverted Data Input
73 GND Ground
74 Tx5p Transmitter Non-Inverted Data Input
75 Tx5n Transmitter Inverted Data Input
76 GND Ground

 

Pin Description-QSFP28 End

QSFP-compliant 38-pin Connector (per SFF-8679)

 

Pin Symbol Description
1 GND Ground
2 Tx2n Transmitter Inverted Data Input
3 Tx2p Transmitter Non-Inverted Data Input
4 GND Ground
5 Tx4n Transmitter Inverted Data Input
6 Tx4p Transmitter Non-Inverted Data Input
7 GND Ground
8 ModSelL Module Select
9 ResetL Module Reset
10 VccRx +3.3V Power Supply Receiver
11 SCL 2-Wireserial Interface Clock
12 SDA 2-Wireserial Interface Data
13 GND Ground
14 Rx3p Receiver Non-Inverted Data Output
15 Rx3n Receiver Inverted Data Output
16 GND Ground
17 Rx1p Receiver Non-Inverted Data Output
18 Rx1n Receiver Inverted Data Output
19 GND Ground
20 GND Ground
21 Rx2n Receiver Inverted Data Output
22 Rx2p Receiver Non-Inverted Data Output
23 GND Ground
24 Rx4n Receiver Inverted Data Output
25 Rx4p Receiver Non-Inverted Data Output
26 GND Ground
27 ModPrsL Module Present
28 IntL Interrupt
29 VccTx +3.3V Power Supply Transmitter
30 Vcc1 +3.3V Power Supply
31 LPMode Low Power Mode
32 GND Ground
33 Tx3p Transmitter Non-Inverted Data Input
34 Tx3n Transmitter Inverted Data Input
35 GND Ground
36 Tx1p Transmitter Non-Inverted Data Input
37 Tx1n Transmitter Inverted Data Input
38 GND Ground

 

Cable Mechanical Specifications
Parameter Types Min. Typ. Max. Units
Diameter 4P 30AWG 5.0 5.3 5.6 mm
QSFP-DD End
Minimum Bend Radius 4P 30AWG ×4 – 26.5 – mm
Minimum Bend Space 4P 30AWG × 4 – 73 mm
QSFP28 End
Minimum Bend Radius 4P 30AWG – 26.5 – mm
Minimum Bend Space 4P 30AWG – 54 – mm

 

Insertion, Extraction and Retention Forces
Parameter Min. Max. Units Note
Insertion
QSFP-DD Module 0 90 N –
QSFP28 Module 0 40 N –
Extraction – – – –
QSFP-DD Module 0 50 N –
QSFP28 Module 0 30 N –
Retention
QSFP-DD Module 90 N/A N No Damage to Module Below 90N With Latch Engaged
QSFP28 Module 90 N/A N No Damage to Module Below 90N With Latch Engaged
Insertion/Removal Cycles
QSFP-DD Module 50 N/A Cycles Number of Cycles for an Individual Module
QSFP28 Module 50 N/A Cycles Number of Cycles for an Individual Module
Memory Map
QSFP-DD end: Compatible with Common Management Interface Specification for 8X/16X Pluggable Transceivers.
QSFP28 end: Compatible with SFF-8636.

 

PRODUCT CERTIFICATION

 

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400G QSFP-DD to 4×100G QSFP28 Active Electrical Copper Breakout Cable (AEC)最先出现在www.philisun.com。

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