Thank you for contacting Intel.
The operating temperature of Intel® Ethernet QSFP+ Optics is 0 to 70°C. However, there's no operating temperature for cable since it doesn't have operating components in it.
Please refer to Product Briefs on the links below:
1. http://www.intel.ph/content/dam/www/public/us/en/documents/product-briefs/ethernet-qsfp-optics-brief... Intel® Ethernet QSFP+ Optics
2. http://www.intel.com/content/dam/www/public/us/en/documents/product-briefs/ethernet-qsfp-cables-brie... Intel® Ethernet QSFP+ Cables
Please let us know if you have other inquiries.
Do you know why there is no stated operating temperature for Intel Ethernet QSFP+ breakout cable under Product briefs?
http://www.intel.com/content/www/us/en/ethernet-products/optics-cables/ethernet-qsfp-cables-brief.ht... Intel® Ethernet QSFP+ Cables Product Brief
I saw Intel Ethernet SFP+ Twinaxial Cable Product briefs listed Electrical/Cables Characteristics or Intel Ethernet QSFP+ Optic Product briefs listed Optical Characteristics SR4, why there is no listed for Intel Ethernet QSFP+ cable Product briefs?
http://www.intel.com/content/www/us/en/ethernet-products/optics-cables/ethernet-sfp-twinaxial-cables... Intel® Ethernet SFP+ Twinaxial Cables Product Brief
Follow up questions.
So the QSFP+ twinaxial cables and breakout cables do not comply to the commercial temperature range of 0-70C and do not have operating temperatures?
If so, why is there a need for the heatsink on the QSFP+ connector on the OCP board?
Customer mentioned that "The heatsink for purpose to prevent the part from overheating since it is attached to the adapter card".
So this statement is only applicable for the Intel Ethernet QSFP+ Optics since it has an operating temperature?
If we do not have the heatsink, it should not be a concern for the Intel Ethernet QSFP+ Twinaxial cable and the Intel Ethernet QSFP+ Breakout cable?
Customer questions again.
The Intel Ethernet QSFP+ Optics does not have a heatsink on board even though it has an operating temperature of 0-70C. It would be using the heatsink that is on the QSFP+ connector on the Fisher Flat.
I believe there should be an operating temperature specification even for the Intel Ethernet QSFP+ Twinaxial cable and the Intel Ethernet QSFP+ Breakout cable if they are to comply to the SFF-8436 specification.