400G OSFP Series – www.philisun.com https://www.philisun.com Optical transceivers support <strong>10G to 800G</strong> high-speed transmission Fri, 13 Mar 2026 09:50:36 +0000 en-US hourly 1 https://www.philisun.com/wp-content/uploads/2025/10/philisun斐立飒-logo彩色方形-1-100x100.png 400G OSFP Series – www.philisun.com https://www.philisun.com 32 32 400G OSFP(FIN) to 2×200G QSFP56 Passive Direct Attach Copper Twinax Cable (DAC) https://www.philisun.com/products/400g-osfp-fin-2-200g-qsfp56-dac/ Fri, 13 Mar 2026 09:37:50 +0000 https://www.philisun.com/?post_type=product&p=7681 Finned top
Compliant with
OSFP MSA、CMISRev4.0、IEEE802.3cd、SFF-8436、SFF-8665、SFF-8679、SFF-8636 standard
Switch to Switch
Switch to GPU

400G OSFP(FIN) to 2×200G QSFP56 Passive Direct Attach Copper Twinax Cable (DAC)最先出现在www.philisun.com。

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SPECIFICATIONS
Cable End Connector AOSFP(FTL)Cable End Connector B2×QSFP56
Jumper TypeActive Optical Breakout CableData Rate400G
Aggregate Bit Rate400GbpsLane Bit Rate50Gbps
Number of Channels8Single Channel Rate50G
Minimum Bend Radius5X Cable OD -Single, 10X Cable OD - RepeatedFactory BrandPHILISUN
Attenuation28AWG:10dB/7m maximum
30AWG:8.4dB/5.5m maximum		Bit Error Rate≤10-12
ShieldBraid/FoilWire AWG28AWG/30AWG
Cable TypePassive TwinaxCable OD30AWG: 6.9mm
28AWG: 7.9mm
Cable Colour/MaterialBlack PVC(OFNR)Cable Length Selection0.5-3 meter
ProtocolsOSFP MSA/CMIS Rev4.0/IEEE 802.3cd/SFF-8436/SFF-8665/SFF-8679/SFF-8636Application Scenarios400Gigabit Ethernet (400GbE)
Supply Voltage3.3VPower Dissipation<0.1W
Operating Temperature0 to 70℃ (32 to 158℉)Storage Temperature-40 to 85℃ (-40 to 185℉)

 

PRODUCT PRESENTATION
The PHILISUN 400G OSFP to 2x200G QSFP56 Passive Direct Attach Copper Twinax Cable (DAC) is an essential Breakout Cable, providing a Cost-Effective way to split a 400G OSFP port into two 200G QSFP56 links, maximizing port Density. The Finned Top design enhances cooling in HPC environments. This Passive Copper solution is highly Power-Efficient and delivers Low Latency. Compliant with OSFP MSA, CMIS Rev4.0, and IEEE 802.3cd standard, it supports scalable Switch to Switch aggregation and high-throughput connections from Switch to GPU systems in modern AI Clusters.

 

DAC SERIES PRODUCTS

 

PRODUCTION & TESTING EQUIPMENT

 

PERFORMANCE PARAMETER
Absolute Maximum Ratings
Parameters Symbol Min. Max. Unit
Operating Voltage Vcc 3.135 3.465 V
Operating Temperature – 0 +70 ℃
Storage Temperature Ts -40 +85 ℃
Humidity Operating RH – 85 %

 

OSFP pin definitions

 

QSFP56 pin definitions

 

Pin Connection
PairNo. P1(OSFP) P2(QSFP)
Pin Signal Pin Signal
1 28 RX1n 37 TX1n(QSFP-1)
29 RX1p 36 TX1p(QSFP-1)
2 59 TX1p 17 RX1p(QSFP-1)
58 TX1n 18 RX1n(QSFP-1)
3 33 RX2n 2 TX2n(QSFP-1)
32 RX2p 3 TX2p(QSFP-1)
4 2 TX2p 22 RX2p(QSFP-1)
3 TX2n 21 RX2n(QSFP-1)
5 25 RX3n 34 TX3n(QSFP-1)
26 RX3p 33 TX3p(QSFP-1)
6 56 TX3p 14 RX3p(QSFP-1)
55 TX3n 15 RX3n(QSFP-1)
7 36 RX4n 5 TX4n(QSFP-1)
35 RX4p 6 TX4p(QSFP-1)
8 5 TX4p 25 RX4p(QSFP-1)
6 TX4n 24 RX4n(QSFP-1)
9 22 RX5n 37 TX1n(QSFP-2)
23 RX5p 36 TX1p(QSFP-2)
10 53 TX5p 17 RX1p(QSFP-2)
52 TX5n 18 RX1n(QSFP-2)
11 39 RX6n 2 TX2n(QSFP-2)
38 RX6p 3 TX2p(QSFP-2)
12 8 TX6p 22 RX2p(QSFP-2)
9 TX6n 21 RX2n(QSFP-2)
13 19 RX7n 34 TX3n(QSFP-2)
20 RX7p 33 TX3p(QSFP-2)
14 50 TX7p 14 RX3p(QSFP-2)
49 TX7n 15 RX3n(QSFP-2)
15 42 RX8n 5 TX4n(QSFP-2)
41 RX8p 6 TX4p(QSFP-2)
16 11 TX8p 25 RX4p(QSFP-2)
12 TX8n 24 RX4n(QSFP-2)

 

Electrical Performance Requirements
Test Items Test Conditions 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 atthe rated current after 96 hours(45 minutes ON/15 minutes OFF per
hour).		 Temperature rise: +30℃ MAX.
Continuity Verify the continuous electrical path No open, short, or high resistance.

 

SI Requirements
Test Items Specification Notes
SDD21&SDD12 -17.16 dB Min. @13.28 GHz From 0.01 GHz to 19GHz
SDD11&SDD22 -16.5+2*sqrt(f)dB Max. @0.05GHz~4.1GHz
-10.66+14*log(f/5.5)dB Max.@4.1GHz~
10GHz		 From 0.01 GHz to 19GHz
SCD21-SDD21 -10 dB Max. @0.01 GHz~12.89 GHz
-27+(29/22)*fdB Max. @12.89 GHz~15.7
GHz -6.3 dB Max. @15.7 GHz~19 GHz		 From 0.01 GHz to 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 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. No physical damage， Verify continuity and SI

 

PRODUCT CERTIFICATION

 

COMPATIBLE BRANDS
CONFIGURATION INFORMATION
The form can be filled in the actual website url.

 

400G OSFP(FIN) to 2×200G QSFP56 Passive Direct Attach Copper Twinax Cable (DAC)最先出现在www.philisun.com。

]]> 400G OSFP(FTL) to 400G QSFP-DD Passive Direct Attach Copper Twinax Cable (DAC) https://www.philisun.com/products/400g-osfp-ftl-to-400g-qsfp-dd/ Fri, 13 Mar 2026 08:40:28 +0000 https://www.philisun.com/?post_type=product&p=7672 Flat top
Compliant with
IEEE 802.3cd, OSFP MSA, QSFP-DD MSA, CMIS Rev4.0, SFF-8417 standard
Switch to Switch
Switch to GPU

400G OSFP(FTL) to 400G QSFP-DD Passive Direct Attach Copper Twinax Cable (DAC)最先出现在www.philisun.com。

]]>
SPECIFICATIONS
Cable End Connector AOSFP(FTL)Cable End Connector BQSFP-DD
Jumper TypeDirect-AttachData Rate400G
Aggregate Bit Rate400GbpsLane Bit Rate50Gbps
Number of Channels8Single Channel Rate50G
Minimum Bend Radius5X Cable OD -Single, 10X Cable OD - RepeatedFactory BrandPHILISUN
Attenuation28AWG:10dB/7m maximum
30AWG:8.4dB/5.5m maximum		Bit Error Rate≤10-12
ShieldBraid/FoilWire AWG28AWG/30AWG
Cable TypePassive TwinaxCable OD30AWG: 6.7mm
28AWG: 8.1mm
Cable Colour/MaterialBlack PVC(OFNR)Cable Length Selection0.5-2meter
ProtocolsQSFP-DD MSA/CMIS Rev 4.0/SFF 8417/OSFP MSAApplication Scenarios400Gigabit Ethernet (400GbE)
Supply Voltage3.3VPower Dissipation<0.1W
Operating Temperature0 to 70℃ (32 to 158℉)Storage Temperature-40 to 85℃ (-40 to 185℉)

 

PRODUCT PRESENTATION
The PHILISUN 400G OSFP to 400G QSFP-DD Passive Direct Attach Copper Twinax Cable (DAC) is a critical adapter cable, providing a Cost-Effective and Power-Efficient solution to link switches utilizing different High-Density form factors (OSFP and QSFP-DD). The Flat Top design ensures optimized thermal management. This Passive Copper cable delivers Ultra-Low Latency for short-reach 400GbE Server Interconnects. Compliant with IEEE 802.3cd, OSFP MSA, QSFP-DD MSA, and CMIS Rev4.0, it ensures flexible and reliable Switch to Switch communication and massive data throughput from Switch to GPU systems in the Data Center.

 

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 3.465 V
Relative Humidity RH – 85 %

 

Electrical Performance Requirements
Item 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

 

Mechanical Performance Requirements
Item Test Condition Specification
Mating Forces A rate of 10mm per minute QSFP-DD<90N, OSFP＞40N
Un-mating Forces A rate of 10mm per minute QSFP-DD<50N, 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		 Min. bending radius allowed :
repeated 10X ø .
single 5X ø		 1. No physical damage
2. Verify continuity and SI

 

Pin Definition-QSFP-DD

 

Pin Definition-OSFP

 

Wire Connection
Parameter P1 (QDD) P2 (OSFP)
Pin Signal Pin Signal
1 18

17

 RX1n

RX1p

 58

59

 TX1n

TX1p
2 36

37

 TX1p

TX1n

 29

28

 RX1p

RX1n
3 21

22

 RX2n

RX2p

 3

2

 TX2n

TX2p
4 3

2

 TX2p

TX2n

 32

33

 RX2p

RX2n
5 15

14

 RX3n

RX3p

 55

56

 TX3n

TX3p
6 33

34

 TX3p

TX3n

 26

25

 RX3p

RX3n
7 24

25

 RX4n

RX4p

 6

5

 TX4n

TX4p
8 6

5

 TX4p

TX4n

 35

36

 RX4p

RX4n
9 56

55

 RX5n

RX5p

 52

53

 TX5n

TX5p
10 74

75

 TX5p

TX5n

 23

22

 RX5p

RX5n
11 59

60

 RX6n

RX6p

 9

8

 TX6n

TX6p
12 41

40

 TX6p

TX6n

 38

39

 RX6p

RX6n
13 53

52

 RX7n

RX7p

 49

50

 TX7n

TX7p
14 71

72

 TX7p

TX7n

 20

19

 RX7p

RX7n
15 62

63

 RX8n

RX8p

 12

11

 TX8n

TX8p
16 44

43

 TX8p

TX8n

 41

42

 RX8p

RX8n

 

PRODUCT CERTIFICATION

 

COMPATIBLE BRANDS
CONFIGURATION INFORMATION
The form can be filled in the actual website url.

 

400G OSFP(FTL) to 400G QSFP-DD Passive Direct Attach Copper Twinax Cable (DAC)最先出现在www.philisun.com。

]]> 400G OSFP(FTL) to OSFP(FTL) Passive Direct Attach Copper Twinax Cable (DAC) https://www.philisun.com/products/400g-osfp-ftl-dac/ Fri, 13 Mar 2026 07:39:10 +0000 https://www.philisun.com/?post_type=product&p=7663 Flat top
Compliant with
OSFP MSA, CMIS Rev4.0, IEEE 802.3cd standard
Switch to Switch
Switch to GPU

400G OSFP(FTL) to OSFP(FTL) Passive Direct Attach Copper Twinax Cable (DAC)最先出现在www.philisun.com。

]]>
SPECIFICATIONS
Cable End Connector AOSFP(FTL)Cable End Connector BOSFP(FTL)
Jumper TypeDirect-AttachData Rate400G
Aggregate Bit Rate400GbpsLane Bit Rate50Gbps
Number of Channels8Single Channel Rate50G
Minimum Bend Radius5X Cable OD -Single, 10X Cable OD - RepeatedFactory BrandPHILISUN
Attenuation28AWG:10dB/7m maximum
30AWG:8.4dB/5.5m maximum		Bit Error Rate≤10-12
ShieldBraid/FoilWire AWG28AWG/30AWG
Cable TypePassive TwinaxCable OD30AWG: 6.7mm
28AWG: 7.9mm
Cable Colour/MaterialBlack PVC(OFNR)Cable Length Selection0.5-2meter
ProtocolsOSFP MSA CMIS Rev4.0/IEEE 802.3cdApplication Scenarios400Gigabit Ethernet (400GbE)
Supply Voltage3.3VPower Dissipation<0.1W
Operating Temperature0 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
The form can be filled in the actual website url.

 

400G OSFP(FTL) to OSFP(FTL) Passive Direct Attach Copper Twinax Cable (DAC)最先出现在www.philisun.com。

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