40G QSFP+ 3m (10ft) Passive Direct Attach Copper Cable Twinax QSFP+ to QSFP+ DAC Cable


QSFP+ Direct Attach Cables are compliant with the SFF-8436 specifications. Various choices of wire gauge are available from 30 to 24 AWG with various choices of cable length (up to 7m)

Features and Benefits

Compliant with SFF- 8436.

Up to 10.3125Gbps data rate per channel

Up to 7m transmission

Operating temperature: -40to +80

Single 3.3V power supply

RoHS compliant

 

Advantage

Cost-effective copper solution

Lowest total system power solution

Lowest total system EMI solution

Optimized design for Signal Integrity

General Product Characteristics

QSFP+ DAC Specifications
Number of Lanes Tx & Rx
Channel Data Rate 10.3125 Gbps
Operating Temperature 0 to + 70°C
Storage Temperature -40 to + 85°C
Supply Voltage 3.3 V nominal
Electrical Interface 38 pins edge connector
Management Interface Serial, I2C

 

 

High Speed Characteristics

Parameter Symbol Min. Typ Max. Unit Notes
Differential Impedance Zd 90 100 110 Ω
Differential Input Return Loss  SDDXX <-12+2* SQRT (f) with f in GHz dB 0.01~4.1GHz
<-6.3+13*Log10/(f/5.5) with f in GHz dB 4.1~11.1GHz
Common Mode Output Return Loss  SCCXX < -7+1.6*f with f in GHz dB 0.01~2.5GHz
-3 dB 2.5~11.1GHz
Difference Waveform Distortion Penalty dWDPc 6.75 dB
VMA Loss L 4.4 dB
VMA Loss to Crosstalk Ratio VCR 32.5 dB

 

Applications

40G Ethernet