Features
● Enhanced EMI / EMC performance
● Compliant with the IEEE 802.3bj Infiniband EDR specifications
● Meets SFF-8636,SFF-8402
● Support serial ID function through EEPROM
● 30AWG to 26AWG cable available
● RoHS
Applications
● 10G/25G/40G /100g Ethernet
● Infiniband SDR, DDR, QDR, FDR, EDR
● Switches, routers, data centers, cloud servers
Outline drawing
Wiring Diagram
Electrical Performance
Signal Integrity:
|
(ITEM) |
(REQUIREMENT) |
(TEST CONDITION) |
|
|
(Differential Impedance) |
Cable Impedance |
105+5/-10Ω |
Rise time of 25ps (20 % - 80 %).
|
|
Paddle Card Impedance |
100±10Ω |
||
|
Cable Termination Impedance |
|||
|
100±15Ω |
|||
|
[Differential (Input/Output)Return loss SDD11/SDD22] |
Return_loss(f)≥ 16.5-2√f 0.05≤f﹤4.1 10.66-14log10(f/ 5.5) 4.1≤f≤19 Where f is the frequency in GHz Return loss(f) is the return loss at frequency f
|
10MHz≤f ≤19GHz |
|
|
[Differential to common-mode (Input/Output)Return loss SCD11/SCD22] |
Return_loss(f)≥ 22-(20/25.78)f 0.01≤f﹤12.89 15-(6/25.78)f 12.89≤f≤19 Where f is the frequency in GHz Return_loss(f) is the Differential to common-mode return loss at frequency f
|
10MHz≤f ≤19GHz |
|
|
[Common-mode to Common-mode (Input/Output)Return loss SCC11/SCC22] |
Return_loss(f)≥2dB 0.2≤f≤19 Where f is the frequency in GHz Return_loss(f) is the common-mode to common-mode return loss at frequency f
|
10MHz≤f ≤19GHz |
||||||
|
[Differential Insertion Loss (SDD21 Max.)] |
(Differential InsertionLoss Max. For TPa to TPb Excluding Test fixture ) |
10MHz≤f ≤19GHz |
||||||
|
F AWG |
1.25GHz |
2.5GHz |
5.0GHz |
7.0GHz |
10Ghz |
12.89Ghz |
||
|
30(1m) Max. |
4.5dB |
5.4dB |
6.3dB |
7.5dB |
8.5dB |
10.5dB |
||
|
30/28( 3m)Ma x. |
7.5dB |
9.5dB |
12.2dB |
14.8dB |
18.0dB |
21.5dB |
||
|
26(3m) Max. |
5.7dB |
7.2dB |
9.9 dB |
11.9dB |
14.1dB |
16.5dB |
||
|
26/25( 5m)Ma x. |
7.8dB |
10.0dB |
13.5dB |
16.0dB |
19.0dB |
22.0dB |
||
|
Differential to common-mode Conversion Loss-Differential Insertion Loss(SCD21-SDD21) |
Conversion _loss(f) – IL(f)≥10 0.01≤f﹤12.89 27-(29/22)f 12.89 ≤ f ﹤ Where f is the frequency in GHz Conversion_loss(f ) is the cable assembly differential to common-mode conversion loss IL(f) is the cable assembly insertion loss
|
10MHz≤f ≤19GHz |
||||||
|
[MDNEXT(multiple disturber near-end crosstalk)] |
≥26dB @12.89GHz |
10MHz≤f ≤19GHz |
||||||
Other Electrical Performance:
|
(ITEM) |
(REQUIREMENT) |
(TEST CONDITON) |
|
[Low Level Contact Resistance] |
70milliohms Max. From initial. |
EIA-364-23:Apply a maximum voltage of 20mV And a current of 100 mA. |
|
Insulation Resistance |
10Mohm(Min.) |
EIA364-21:AC 300V 1minute |
|
[Dielectric Withstanding Voltage] |
NO disruptive discharge. |
EIA-364-20:Apply a voltage of 300 VDC for 1minute between adjacent terminals And between adjacent terminals and ground. |
Environment Performance
|
(ITEM) |
(REQUIREMENT) |
(TEST CONDITON) |
|
[Operating Temp. Range] |
-20°C to +75°C |
Cable operating temperature range. |
|
Storage Temp. Range (in packed condition)] |
-40°C to +80°C |
Cable storage temperature range in packed condition. |
|
[Thermal Cycling Non-Powered] |
No evidence of physical damage |
EIA-364-32D, Method A, -25 to 90C, 100 cycles, 15 min. dwells |
|
[Salt Spraying] |
48 hours salt spraying after shell corrosive area less than 5％. |
EIA-364-26 |
|
Mixed Flowing Gas |
Pass electrical tests per 3.1 after stressing. (For connector only) |
EIA-364-35 Class II,14 days. |
|
Temp. Life |
No evidence of physical damage |
EIA-364-17C w/ RH, Damp heat 90℃ at 85% RH for 500 hours then return to ambient |
|
Cable Cold Bend |
4H,No evidence of physical damage |
Condition: -20℃±2℃, mandrel diameter is 6 times the cable diameter. |
Mechanical and Physical Characteristics
|
(ITEM) |
(REQUIREMENT) |
(TEST CONDITON) |
|
Vibration |
Pass electrical tests per 3.1 after stressing. |
Clamp & vibrate per EIA-364-28E, TC-VII, test condition letter – D, 15 minutes in X, Y & Z axis. |
|
Twist |
No evidence of physical damage |
Twist cable 180° (±90° from nominal position) for 100 cycles at 30 cycles per minute with a 0.5kg load applied to the cable jacket. Clamp position: 300mm |
|
Cable Flex |
No evidence of physical damage |
Flex cable 180° for 20 cycles (±90° from nominal position) at 12 cycles per minute with a 1.0kg load applied to the cable jacket. Flex in the boot area 90º in each direction from vertical. Per EIA-364-41C |
|
Cable Plug Retention in Cage |
90N Min. No evidence of physical damage |
Force to be applied axially with no damage to cage. Per SFF 8661 Rev 2.1 Pull on cable jacket approximately 1 ft behind cable plug. No functional damage to cable plug below 90N. Per SFF-8432 Rev 5.0 |
|
Cable Retention in Plug |
90N Min. No evidence of physical damage |
Cable plug is fixtured with the bulk cable hanging vertically. A 90N axial load is applied (gradually) to the cable jacket and held for 1 minute. Per EIA-364-38B |
|
Mechanical Shock |
Pass electrical tests Per 3.1 after stressing. |
Clamp and shock per EIA-364-27B, TC-G,3 times in 6 directions, 100g, 6ms. |
|
Cable Plug Insertion |
40N Max.(QSFP28) 18N Max.(SFP28) |
Per SFF8661 Rev 2.1 Per SFF-8432 Rev 5.0 |
|
Cable plug Extraction |
30N Max. (QSFP28) 12.5N Max. (SFP28) |
Place axial load on de-latch to de-latch plug.Per SFF8661 Rev 2.1 Measure without the aid of any cage kick-out springs. Place axial load on de-latch to de-latch plug. Per SFF-8432 Rev 5.0 |
|
Durability |
50 cycles,No evidence of physical damage |
EIA-364-09, perform plug &unplug cycles:Plug and receptacle mate rate: 250times/hour. 50times for QSFP28/SFP28 module (CONNECTOR TO PCB) |
FAQ
1. What are the connector types on either end of the cable?
A: The connectors on this cable are QSFP28 on one end and four SFP28 connectors on the other end.
2. What is the application of this cable?
A: This cable is suitable for short-distance interconnections within racks and across adjacent racks in data centers, telecommunications equipment rooms, and other environments. It provides a cost-effective way to establish a 100-Gigabit link between QSFP28 ports.
3. Is this cable easy to install and use?
A: Yes, the cable is designed for easy installation and use. It features plug-and-play functionality, which means you can simply connect it to your equipment without the need for additional configuration or setup. Additionally, the compact design and lightweight construction make it easy to handle and manage in tight spaces.
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