SPECIFICATIONS
Cable End Connector A	QSFP28	Cable End Connector B	2×QSFP28
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: 5.5mm 28AWG: 9.2mm 26AWG:7.3mm
Cable Colour/Material	Black PVC(OFNR)	Cable Length Selection	1-9meter
Protocols	SFF-8665/SFF-8636/SFF-8679/QSFP28 MSA	Application Scenarios	100Gigabit Ethernet (100GbE)
Supply Voltage	3.3V	Power Dissipation	<1.5W
Operating Temperature	0 to 70℃ (32 to 158℉)	Storage Temperature	-40 to 85℃ (-40 to 185℉)

PRODUCT PRESENTATION

The PHILISUN QSFP28 to 2×50G QSFP28 Ethernet active direct attach copper breakout cable features an active design for extended reach and a thinner cable profile. It complies with SFF‑8665, QSFP28 MSA, SFF‑8636, and SFF‑8679 standards, and supports hot‑plugging per QSFP28 MSA. Verified on Cisco and Dell target switches, it delivers outstanding performance, quality, and reliability. Ideal for short‑reach connections, it provides a cost‑effective interconnect solution for data centers and high‑performance computing (HPC) environments, linking 100G QSFP28 and 50G QSFP28 ports across switches, routers, servers, and storage in cross‑rack deployments.

DAC SERIES PRODUCTS

PRODUCTION & TESTING EQUIPMENT

PERFORMANCE PARAMETER

Absolute Maximum Ratings
Parameter	Symbol	Min.	Typlcal	Max.	Unit
Storage Temperature Range	Ts	-40	–	85	℃
Operating Relative Humidity	RH	–	–	85	%
Bit Rate	BR	–	106.25	–	Gbps
Operating Case Temperature	TOPR	0	70	70	℃
Power Supply Voltage	VCC	3.135	3.3	3.456	V

Characteristics
Item		Parameter
Physical	Length	Up to 9m
–	Cable Color	Black
Electrical	Ressistance	2 ohm Max
–	Insulation Resistance	10M ohm Min
SI Performance	SDD21	-22.48dB Min. @12.89GHz no suck-out < 30GHZ
–	SDD11/SDD22	-16.5+2sqrt(f)dB Max @0.05GHz-4.1GHz -10.66+14 1og(f/5.5) dB Max@4.1GHz-19GHz
–	SCD22	-22+(20/25.78)fdB Max@0.01GHz~12.89GHz -15+(6/25.78)fdB Max@12.89GHz~19GHz
–	SCC11	-2dB Max
–	SCD21-SDD21	-10dB Max @0.01GHz~12.89GHz -27+(29/22)*fdB Max @12.89GHz~15.7GHz -6.3dB Max @15.7GHz~19GHz
–	NEXT	-30 dB Max
–	COM	3 dB Min

Pin Function Definitions
Pin No.	Logic	Symbol	Description	Plug Sequence
1	–	GND	Ground	1
2	GML-I	Tx2n	Transmitter Inverted Data Input	3
3	GML-I	Tx2p	Transmitter Non-Inverted Data Input	3
4	–	GND	Ground	1
5	GML-I	Tx4n	Transmitter Inverted Data Input	3
6	GML-I	Tx4p	Transmitter Non-Inverted Data Input	3
7	–	GND	Ground	1
8	LVTTL-I	ModSelL	Module Select	3
9	LVTTL-I	ResetL	Module Reset	3
10	–	VccRx	+3.3V Power Supply Receiver	2
11	LVCMOS-I/O	SCL	Two-wire interface clock	3
12	LVCMOS-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 Predent	3
28	LVTTL-O	IntL/RxLOSL	Interrupt. Optionally configurable as RxLOSL via the management interface (SFF-8636)	3
29	–	VxxTX	+3.3V Power supply transmitter	2
30	–	Vxxl	+3.3V Power supply	2
31	LVTTL-I	LPMode/TxDis	Low Power Mode. Optionally configurable as TxDis 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	Tramsmitter Inverted Data Input	3
35	–	GND	Ground	1
36	CML-I	Tx1p	Transmitter Non-Inverted Data Input	3
37	CML-I	Tx1n	Tramsmitter Inverted Data Input	3
38	–	GND	Ground	1

Transceiver Electrical Pad Layout

PRODUCT CERTIFICATION

COMPATIBLE BRANDS

CONFIGURATION INFORMATION

100G QSFP28 to 2×50G QSFP28 Active Direct Attach Copper Twinax Cable (ACC)

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