SPECIFICATIONS
Cable End Connector A	QSFP28	Cable End Connector B	4×SFP28
Jumper Type	Active Optical Breakout Cable	Data Rate	100G
Aggregate Bit Rate	100Gbps	Lane Bit Rate	25Gbps
Number of Channels	4	Single Channel Rate	10G
Minimum Bend Radius	5X Cable OD -Single, 10X Cable OD - Repeated	Factory Brand	PHILISUN
Attenuation	26AWG:10dB/8.5m maximum 28AWG:10dB/7m maximum 30AWG:8.4dB/5.5m maximum	Bit Error Rate	≤10-12
Shield	Braid/Foil	Wire AWG	26AWG/28AWG/30AWG
Cable Type	Active Twinax	Cable OD	30AWG: 6.6mm 28AWG: 8.0mm 26AWG: 8.9mm
Cable Colour/Material	Black PVC(OFNR)	Cable Length Selection	1-9meter
Protocols	SFF-8665/SFF-8402/ SFP28 MSA/QSFP28 MSA/SFF-8679/SFF-8472	Application Scenarios	100Gigabit Ethernet (100GbE)
Supply Voltage	3.3V	Power Dissipation	<1.8W
Operating Temperature	0 to 70℃ (32 to 158℉)	Storage Temperature	-40 to 85℃ (-40 to 185℉)

PRODUCT PRESENTATION

The PHILISUN 100G SFP28 to 4x 25G SFP28 active twinax cable is designed for 100G to 4x 25G Ethernet breakout applications.It complies with SFF-8679, SFF-8472, SFF-8402, SFF-8665, hot-pluggable QSFP28 MSA and SFP28 MSA standards.It connects one 100G QSFP28 port to four 25G SFP28 ports for short‑reach interconnections.Features low latency, low power consumption and high reliability, delivering a cost-effective connectivity solution.Ideal for data centers, high-performance computing (HPC), and intra-rack or adjacent-rack connections for switches, routers, servers and storage systems.

DAC SERIES PRODUCTS

PRODUCTION & TESTING EQUIPMENT

PERFORMANCE PARAMETER

Absolute Maximum Ratings
Parameter	Unit	Min.	Typical	Max.	Notes
Storage Temperature	℃	-40	–	85	–
Operating Case Temperature	℃	0	–	70	–
Operating Relative Humidity	%	–	–	85	–
Power Supply Working Voltage	V	3. 135	3	3.465	–
Bit Rate	Gbps	–	100.0	–	–

Electrical Characteristics
All performance is specified at whole working temperature and conditions
Item		Parameter	Notes
Physical	Length	5 m, 6 m, 7 m, 8 m, 9 m	–
–	Cable Colour	Black	–
Electrical	Resistance	2 ohm Max.	–
–	Insulation Resistance	10M ohm Min.	–
SI Performance	SDD21	-22.48d B Min.	@ 12.89GHz
–	SDD11/SDD22	– 16.5+2*sqrt(f)dB Max.	@0.05GHz-4.1GHz
–	–	– 10.66+ 14*1og(f/5.5)dB Max.	@4. 1GHz- 19GHz
Item		Parameter	Notes
SI Performance	SCD22	-22+(20/25.78)*f dB Max.	@0.01GHz~ 12.89GHz
	–	– 15+(6/25.78)*f dB Max.	@ 12.89GHz~ 19GHz
	SCC11	-2d B Max.	–
	SCD21-SDD21	– 10d B Max.	@0.01GHz~ 12.89GHz
	–	-27+(29/22)*f dB Max.	@ 12.89GHz~ 15.7GHz
	–	-6.3d B Max.	@ 15.7GHz~ 19GHz
	MDNEXT	-30d B Max.	–
	COM	3d B Min.	–

QSFP28 Pin Description

For detail mechanical information, please refer to the related document of SFF-8679.

Pad	Logic	Symbol	Description	Plug Sequence
1	–	GND	Ground	1
2	CML-I	Tx2n	Transmitter Inverted Data Input	3
3	CML-I	Tx2p	Transmitter Non-Inverted Data Input	3
4	–	GND	Ground	1
5	CML-I	Tx4n	Transmitter Inverted Data Input	3
6	CML-I	Tx4p	Transmitter Non-Inverted Data Input	3
7	–	GND	Ground	1
8	LVITL-I	ModSeIL	Module Select	3
9	LVITL-I	Resetl	Module Reset	3
10	–	VCCRx	+3.3V Power Supply Receiver	2
1 1	LVCM0S-I/O	SCL	Two-Wire Interface Clock	3
12	LVCM0S-I/O	SDA	Two-Wire Interface Data	3
13	–	GND	Ground	1
14	CML-O	Rx3p	Receiver Non-Inverted Data Output	3
15	CML-O	Rx3n	Receiver Inverted Data Output	3
16	–	GND	Ground	1
17	CML-O	Rx1p	Receiver Non-Inverted Data Output	3
18	CML-O	Rx1n	Receiver Inverted Data Output	3
19	–	GND	Ground	1
20	–	GND	Ground	1
21	CML-O	Rx2n	Receiver Inverted Data Output	3
22	CML-O	Rx2p	Receiver Non-Inverted Data Output	3
23	–	GND	Ground	1
24	CML-O	Rx4n	Receiver Inverted Data Output	3
25	CML-O	Rx4p	Receiver Non-Inverted Data Output	3
26	–	GND	Ground	1
27	LVTTL-O	ModPrsL	Module Present	3
28	LVTTL-O	IntL/ RxL0SL	I nterrupt. Optionaily configurable as RxL0SL via the Management Interface (SFF-8636).	3
29	–	VCCTx	+3.3V Power Supply Transmitter	2
30	–	VCC1	+3.3V Power Supply	2
31	LVTTL-I	LPMode/Tx Dis	Low Power Mode. Optionally Configurable as Tx Dis via the Management Interface (SFF-8636).	3
32	–	GND	Ground	1
33	CML-I	Tx3p	Transmitter Non-Inverted Data Input	3
34	CML-I	Tx3n	Transmitter Inverted Data Input	3
35	–	GND	Ground	1
36	CML-I	Tx1p	Transmitter Non-Inverted Data Input	3
37	CML-I	Tx1n	Transmitter Inverted Data Input	3
38	–	GND	Ground	1

SFP28 Pin Description

Pin No.	Symbol	Level/Logic	Description
1	VEET	–	Module Transmitter Ground
2	TX_FAULT	LVTTL-O	Module Transmitter Fault Indication
3	TX_DIS	LVTTL-I	Transmitter Disable; Active High Disable Transmitter Output
4	SDA	LVTTL-I	2-Wire Serial Interface Data Line
5	SCL	LVTTL-I/O	2-Wire Serial Interface Clock
6	MOD_ABS	LVTTL-O	Module A bsent. Connected to Ground in the Module
7	RS0	–	Rate Select 0. Optionally Controls SFP28 Module Receiver
8	RX_LOS	LVTTL-O	Loss of Receiver Signal Indication
9	RS1	–	Rate Select 1, Optionally Controls SFP28 Module Transmitter
10	VEER	–	Module Receiver Ground
11	VEER	–	Module Receiver Ground
12	RD-	CML-O	Receiver Inverted Data Output
13	RD+	CML-O	Receiver Non-Inverted Data Output
14	VEER	–	Module Receiver Ground
15	VCCR	–	Module Receiver 3.3V Supply
16	VCCT	–	Module Transmitter 3.3V Supply
17	VEET	–	Module Transmitter Ground
18	TD+	CML-I	Transmitter Non-Inverted Data Input
19	TD-	CML-I	Transmitter Inverted Data Input
20	VEET	–	Module Transmitter Ground

PRODUCT CERTIFICATION

COMPATIBLE BRANDS

CONFIGURATION INFORMATION

100G QSFP28 to 4×25G SFP28 Active Direct Attach Copper Twinax Cable (ACC)

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