SPECIFICATIONS
Cable End Connector A	OSFP(FIN)	Cable End Connector B	2×OSFP(FTL)
Jumper Type	Active Optical Breakout Cable	Data Rate	800G
Aggregate Bit Rate	800Gbps	Lane Bit Rate	100Gbps
Number of Channels	8	Single Channel Rate	100G
Minimum Bend Radius	5X Cable OD -Single, 10X Cable OD - Repeated	Factory Brand	PHILISUN
Attenuation	26AWG:10dB/8.5m maximum 30AWG:8.4dB/5.5m maximum	Bit Error Rate	≤10-12
Shield	Braid/Foil	Wire AWG	26AWG/30AWG
Cable Type	Passive Twinax	Cable OD	30AWG: 10.8mm 26AWG:14.4mm
Cable Colour/Material	Black PET	Cable Length Selection	0.5-3meter
Protocols	OSFP MSA/IEEE 802.3cK/CMIS v4.0	Application Scenarios	800Gigabit Ethernet (800GbE)
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 800G OSFP to 2x400G OSFP Passive Direct Attach Copper Twinax Cable (DAC) is a flexible Breakout Cable, providing a Cost-Effective solution to segment an 800G OSFP port into two 400G OSFP links, maximizing port Density. The Finned Top design is crucial for thermal management in High-Density environments, while the Passive Copper solution delivers Low Latency and is highly Power-Efficient. Compliant with OSFP MSA Rev5.0, IEEE 802.3ck, and CMIS 4.0 standard, it supports scalable Switch to Switch aggregation and high-throughput Server Interconnects from Switch to GPU systems in AI Clusters and the Data Center.

DAC SERIES PRODUCTS

PRODUCTION & TESTING EQUIPMENT

PERFORMANCE PARAMETER

Electrical Performance Requirements
Items	Test Condition	Specification
Current	–	0.5A per contact
Voltage	–	30v DC per contact
LLCR	EIA 364-23,20mVdc,100mA	less than 2 ohms.
Continuity	Verify the continuous electrical path	No open, short, or high resistance.

SI Requirements(only reference)
Item	Test Condition	Notes
SDD21& SDD12	≤19.75dB Min. @26.56GHz; ≥11.0dB Max. @26.56GHz;	From 0.01GHz to 26.56GHz
ERL	Minimum cable assembly ERL(*): ≥8.25dB	/
SCD12-SDD12 SCD21-SDD21	≥10 0.05GHz≤ f< 12.89GHz ≥14-0.3108f 12.89GHz≤ f≤ 40GHz	(up to 40GHz)

Mechanical Performance Requirements
Test Items	Test Condition	Specification
Mating Forces	A rate of 10mm per minute	OSFP<40N
Un-mating Forces	A rate of 10mm per minute	OSFP<30N
Latch Strength	Pull to separate module from cage，Test with connector, cage& module(latch engaged)	Minimum of an125N 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, 20times/minutes,with an1kg suspended weight.Type CEIA364-41,test conditionI.	No microsecond discontinuitiesare allowed.
Durability	Perform 50 unplug/plugcycles	No evidence of physical damage
Cable Minimum Bend Radius	Min.bending radius allowed: repeated 10Xø . single 5Xø	No physical damage，Verify continuity and SI

Pin Definition

OSFP pin definition

Wire Connction

Parameter	P1 (QSFP-DD)		P2 (QSFP56)
	Pin	Signal	Pin	Signal
1	28	RX1n	58	TX1n(OSFP1#)
	29	RX1p	59	TX1p(OSFP1#)
2	59	TX1p	29	RX1p(OSFP1#)
	58	TX1n	28	RX1n(OSFP1#)
3	33	RX2n	3	TX2n(OSFP1#)
	32	RX2p	2	TX2p(OSFP1#)
4	2	TX2p	32	RX2p(OSFP1#)
	3	TX2n	33	RX2n(OSFP1#)
5	25	RX3n	55	TX3n(OSFP1#)
	26	RX3p	56	TX3p(OSFP1#)
6	56	TX3p	26	RX3p(OSFP1#)
	55	TX3n	25	RX3n(OSFP1#)
7	36	RX4n	6	TX4n(OSFP1#)
	35	RX4p	5	TX4p(OSFP1#)
8	5	TX4p	35	RX4p(OSFP1#)
	6	TX4n	36	RX4n(OSFP1#)
9	22	RX5n	58	TX1n(OSFP2#)
	23	RX5p	59	TX1p(OSFP2#)
10	53	TX5p	29	RX1p(OSFP2#)
	52	TX5n	28	RX1n(OSFP2#)
11	39	RX6n	3	TX2n(OSFP2#)
	38	RX6p	2	TX2p(OSFP2#)
12	8	TX6p	32	RX2p(OSFP2#)
	9	TX6n	33	RX2n(OSFP2#)
13	19	RX7n	55	TX3n(OSFP2#)
	20	RX7p	56	TX3p(OSFP2#)
14	50	TX7p	26	RX3p(OSFP2#)
	49	TX7n	25	RX3n(OSFP2#)
15	42	RX8n	6	TX4n(OSFP2#)
	41	RX8p	5	TX4p(OSFP2#)
16	11	TX8p	35	RX4p(OSFP2#)
	12	TX8n	36	RX4n(OSFP2#)