Juniper EX4300

Table 76 on page 143 describes the cable specifications.
Table 76: QSFP+ Direct Attach Copper Cable Specifications
ValueSpecificationModel Number
40-Gbps full-duplex serial transmissionRateEX-QSFP-40GE-DAC-50CM
QSFP+ passive Twinax cable assemblyConnector type
3.3 VSupply voltage
0.015 WPower consumption (per end)
–40° C through 85° CStorage temperature
TwinaxCable type
30 AWGWire AWG
2.54 cm (1 in.)Minimum cable bend radius
100 ohmsCable characteristic impedance
1% maximumCrosstalk between pairs
4.3 nsec/ftTime delay
1.6 ft (0.5 m)Length
YesSupport for Virtual Chassis
configuration
143Copyright © 2017, Juniper Networks, Inc.
Chapter 8: Transceiver and Cable Specifications