SPECIFICATIONS
Cable End Connector A	OSFP(FTL)	Cable End Connector B	4×QSFP56
Jumper Type	Active Optical Breakout Cable	Data Rate	400G
Aggregate Bit Rate	400Gbps	Lane Bit Rate	50Gbps
Number of Channels	8	Single Channel Rate	50G
Minimum Bend Radius	5X Cable OD -Single, 10X Cable OD - Repeated	Factory Brand	PHILISUN
Attenuation	28AWG:10dB/7m maximum 30AWG:8.4dB/5.5m maximum	Bit Error Rate	≤10-12
Shield	Braid/Foil	Wire AWG	28AWG/30AWG
Cable Type	Passive Twinax	Cable OD	30AWG: 6.0mm 28AWG:6.0mm
Cable Colour/Material	Black PVC(OFNR)	Cable Length Selection	0.5-3 meter
Protocols	OSFP MSA/CMIS Rev4.0/IEEE 802.3cd/SFF-8436/SFF-8665/SFF-8636	Application Scenarios	400Gigabit Ethernet (400GbE)
Supply Voltage	3.3V	Power Dissipation	<0.1W
Operating Temperature	0 to 70℃ (32 to 158℉)	Storage Temperature	-40 to 85℃ (-40 to 185℉)

PRODUCT PRESENTATION

The PHILISUN 400G OSFP to 4x100G QSFP56 Passive Direct Attach Copper Twinax Cable (DAC) is an essential High-Density Breakout Cable, providing a Cost-Effective solution to split a 400G OSFP port into four 100G QSFP56 links. The Finned Top design enhances cooling, crucial for performance in HPC environments. This Passive Copper solution delivers Ultra-Low Latency and is highly Power-Efficient. Compliant with OSFP MSA, CMIS Rev4.0, and IEEE 802.3cd standard, it is ideal for scalable Switch to Switch aggregation and high-throughput Server Interconnects from Switch to GPU systems in the Data Center.

DAC SERIES PRODUCTS

PRODUCTION & TESTING EQUIPMENT

PERFORMANCE PARAMETER

Electrical Performance Requirements
Test Items	Test Condition	Specification
Current	–	0.5A per contact
Voltage	–	30v DC per contact
LLCR	EIA364-23, 20mVdc, 100mA	less than 2 ohms.
Continuity	Verify the continuous electrical path	No open, short, or high resistance.

SI Requirements
Test Items	Specification	Notes
SDD21&SDD12	-17.16dB Min. @13.28 GHz	From 0.01GHz-19GHz
SDD11&SDD22	-16.5+2sqrt(f)dB Max. @0.05GHz~4. 1GHz -10.66+14log(f/5.5)dB Max. @4. 1GHz~10GHz	From0.01 GHz-19GHz
SCD21-SDD21	-10dB Max. @0.01GHz~12.89GHz -27+(29/22)*fdB Max. @12.89 GHz~15.7GHz -6.3dB Max. @15.7GHz~19GHz	From0.01GHz-19GHz

Mechanical Performance Requirements
Test Items	Test Condition	Specification
Mating Forces	A rate of 10mm per minute	OSFP<40N, QSFP<60N
Un-mating Forces	A rate of 10mm per minute	OSFP<30N, QSFP<30N
Latch Strength	Pull to separate module from cage. Test with connector, cage & module (latch engaged)	Minimum of an 125N force
Bulk Cable Retention in Module	Pull to separate bulk cable from module. Test with cable assembly only	Minimum of an 90N force
Wire Flex	Flex cable 180。for 10 cycles atX/Y axis, 20 times/minutes, with an 1kg suspended weight. Type C EIA364-41, test condition I.	No microsecond discontinuities are allowed.
Durability	Perform 50 unplug/plug cycles	No evidence of physical damage
Cable Minimum Bend Radius	The cable is bent on time over the correct mandrel with 5 perpendicular, the Minimum bend Radius is 10x OD.	No physical damage Verify continuity and SI

Pin Definition

OSFP Pin Definitions as OSFP MSA Defined

QSFP Pin Definitions as SFF-8661 Defined

Wire Connction

OSFP Side			QSFP Side
OSFP-Pin	Signal	PCB side	OSFP-Pin	Signal	CH
26	RX1n	bottom	37	TX1n	1
27	RX1p	bottom	36	TX1p	1
59	TX1p	top	17	RX1p	1
58	TX1n	top	18	RX1n	1
33	RX2p	top	2	TX2n	1
32	RX2n	top	3	TX2p	1
02	TX2p	bottom	22	RX2p	1
03	TX2n	bottom	21	RX2n	1
25	RX3n	bottom	37	TX1n	2
26	RX3p	bottom	36	TX1p	2
56	TX3p	top	17	RX1p	2
55	TX3n	top	18	RX1n	2
36	RX4n	top	2	TX2n	2
35	RX4p	top	3	TX2p	2
05	TX4p	bottom	22	RX2p	2
06	TX4n	bottom	21	RX2n	2
22	RX5n	bottom	37	TX1n	3
23	RX5p	bottom	38	TX1p	3
53	TX5p	top	17	RX1p	3
52	TX5n	top	18	RX1n	3
39	RX6n	top	2	TX2n	3
38	RX6p	top	3	TX2p	3
08	TX6p	bottom	22	RX2p	3
09	TX6n	bottom	21	RX2n	3
19	RX7n	bottom	37	TX1n	4
20	RX7p	bottom	38	TX1p	4
50	TX7p	top	17	RX1p	4
49	TX7n	top	18	RX1n	4
42	RX8n	top	2	TX2n	4
41	RX8p	top	3	TX2p	4
11	TX8p	bottom	22	RX2p	4
12	TX8n	bottom	21	RX2n	4