SPECIFICATIONS
Cable End Connector A	OSFP(FTL)	Cable End Connector B	OSFP(FTL)
Jumper Type	Direct-Attach	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: 6.7mm 28AWG: 7.9mm
Cable Colour/Material	Black PVC(OFNR)	Cable Length Selection	0.5-2meter
Protocols	OSFP MSA CMIS Rev4.0/IEEE 802.3cd	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(FTL) to OSFP(FTL) Passive Direct Attach Copper Twinax Cable (DAC) provides a Cost-Effective and Power-Efficient solution for 400 Gigabit Ethernet (400GbE) links between OSFP ports. The Flat Top design is specifically optimized for thermal performance in High-Density environments. This Passive Copper cable delivers Ultra-Low Latency and minimizes power consumption, making it ideal for short-reach Server Interconnects in modern Data Center and AI Clusters. Compliant with OSFP MSA, CMIS Rev4.0, and IEEE 802.3cd standard, it ensures reliable, high-speed connectivity for direct Switch to Switch communication and massive data throughput from Switch to GPU systems.

DAC SERIES PRODUCTS

PRODUCTION & TESTING EQUIPMENT

PERFORMANCE PARAMETER

Absolute Maximum Ratings
Parameter	Symbol	Min.	Max.	Unit
Storage Temperature	Ts	-40	85	℃
Operating Case Temperature	Tcase	0	70	℃
Power Supply Voltage	VCC	3.135	3.465	V
Relative Humidity	RH	–	85	%

Electrical Performance Requirements
Item	Test Condition	Specification
Current	–	0.5A per contact
Voltage	–	30 vDC per contact
LLCR	EIA 364-23, 20mVdc, 100mA	less than 2 ohms
Insulation Resistance	100 Vdc	10 Mohms minimum between adjacent contacts
Dielectric Withstanding Voltage	300 VDC minimum for 1 minutes	No defect or breakdown between adjacent contacts
Temperature Rise	Measure the temperature rise at the rated current after 96 hours (45 minutes ON/ 15 minutes OFF per hour).	Temperature rise: +30℃ MAX.
Item	Test Condition	Specification
Continuity	Verify the continuous electrical path	No open, short, or high resistance.

Mechanical Performance Requirements
Item	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 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 EIA 364-41, 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 bendRadius is 10x OD.	1. No physical damage 2. Verify continuity and SI

Pin Definition

Wire Connection

Pair No.	P1		P2
	Pin	Signal	Pin	Signal
1	28	RX1n	58	TX1n
	29	RX1p	59	TX1p
2	59	TX1p	29	RX1p
	58	TX1n	28	RX1n
3	33	RX2n	3	TX2n
	32	RX2p	2	TX2p
4	2	TX2p	32	RX2p
	3	TX2n	33	RX2n
5	25	RX3n	55	TX3n
	26	RX3p	56	TX3p
6	56	TX3p	26	RX3p
	55	TX3n	25	RX3n
7	36	RX4n	6	TX4n
	35	RX4p	5	TX4p
8	5	TX4p	35	RX4p
	6	TX4n	36	RX4n
9	22	RX5n	52	TX5n
	23	RX5p	53	TX5p
10	53	TX5p	23	RX5p
	52	TX5n	22	RX5n
11	39	RX6n	9	TX6n
	38	RX6p	8	TX6p
12	8	TX6p	38	RX6p
	9	TX6n	39	RX6n
13	19	RX7n	49	TX7n
	20	RX7p	50	TX7p
14	50	TX7p	20	RX7p
	49	TX7n	19	RX7n
15	42	RX8n	12	TX8n
	41	RX8p	11	TX8p
16	11	TX8p	41	RX8p
	12	TX8n	42	RX8n

PRODUCT CERTIFICATION

COMPATIBLE BRANDS

CONFIGURATION INFORMATION

400G OSFP(FTL) to OSFP(FTL) Passive Direct Attach Copper Twinax Cable (DAC)

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